Review: Audi 8S.I TTS Roadster (2015-18)

Overview

Released in Australia in October 2015, the Audi 8S TTS Roadster was an all-wheel drive, two-seat convertible with a power-operated, soft-top roof. Manufactured in Gyor, Hungary, the Audi TTS Roadster was powered by a 2.0-litre turbocharged petrol engine that was mated to a six-speed double clutch transmission (DCT or Audi’s ‘S-Tronic’).

2.0 TFSI Engine

Compared to Audi’s standard 2.0 TFSI engine, changes for the TTS Roadster’s CJXG engine included pistons with stronger bolts, new piston rings and reinforced connecting rods, a larger turbocharger which provided maximum boost pressure of up to 1.2 bar, a high-performance intercooler that was integrated into the water circuit (to reduce the temperature of the compressed air) and a compression ratio of 9.3:1. Other features of the engine included:

• The use of indirect injection – to supplement FSI direct petrol injection – at part engine loads to reduce fuel consumption and particulate emissions. As such, FSI injection – which operated at pressures up to 200 bar – was used on start-up and at higher loads;
• An exhaust valve lift system which varied the stroke of the valves in two stages: the camshaft on the intake side could be adjusted steplessly through 30 degrees of crankshaft angle while 60 degrees of adjustment was available on the exhaust side;
• An exhaust manifold that was integrated into the cylinder head and bathed in coolant;
• A lightweight aluminium-silicon alloy cylinder head;
• Two balance shafts which rotated at twice the speed of the crankshaft to reduce vibrations; and,
• Audi’s ‘Start-Stop’ system which could shut down the engine when the vehicle was stationary to conserve fuel.

Although this engine produces peak power of 228 kW for international markets, the Australia-specific output for this engine is 210 kW.

The Audi 8S TTS Roadster could accelerate from rest to 100 km/h in 5.0 seconds and had an electronically-limited top speed of 250 km/h. Over the combined ADR 81/02 test cycle, fuel consumption for the 8S TTS Roadster was 6.9 litres per 100 km.

Haldex 5 all-wheel drive (‘quattro’)

The Audi 8S TTS Coupe had a fifth-generation Haldex all-wheel drive system which utilised an electronically controlled and hydraulically actuated multi-plate clutch that was located in front of the rear axle differential (at the end of the prop shaft). If there was a loss of front-wheel traction, or such a loss was anticipated by on-board sensors, the clutch would engage to transfer torque to the rear axle ‘in just a few milliseconds’ for a 50:50 front:rear torque split.

As a result of new software which determined the parameters for engagement of the multi-plate clutch, the all-wheel drive system had three selectable modes:

• Efficiency: for maximum fuel efficiency, the rear axle was decoupled such that the vehicle was front-wheel drive only. Nonetheless, all-wheel drive would still be activated before torque was required at all four wheels if a loss of traction was anticipated;
• Auto: the quattro system provideD a 90:10 front:rear torque split; and,
• Dynamic: the multi-plate clutch would engage earlier and to a higher degree.

Development

According to Audi, the body of the 8S TTS Roadster ‘represent[ed] a new evolution of the Audi Space Frame (ASF) based on the modular transverse matrix (MQB)’. As such, the 8S TT Roadster had:

• Ultra-high-strength, hot-shaped steel components reinforcing the front section and passenger compartment; and,
• Semi-finished aluminium in the form of cast nodes, extruded profiles and sheet metal for the passenger compartment, outer skin and attachment parts.

Compared to the Audi 8S TTS Coupe , the 8S TTS Roadster had a modified aluminium A-pillar which contained a second steel pillar with an internal solid steel tube. Other design features included internal steel ribbing for the aluminium sills and V-shaped steel struts to reinforce zones beneath the engine compartment, luggage compartment and to connect the axle carriers.

Soft-top roof

Tthe Audi 8S TTS Roadster’s electrically actuated fabric top – which had magnesium, aluminium, steel and plastic framework – was 3 kg lighter than its predecessor, and improved insulation reduced interior noise by up to 6 dB (depending on frequency). The soft-top was powered by two electric motors which enabled it to open and close in 10 seconds, and be operated at speeds of up to 50 km/h. Since the top folded into a Z shape on an aluminium tray, it did not encroach upon the 280 litre boot. For Australia, the Audi TTS Roadster had a power-operated wind deflector fitted as standard.

Dimensions

Compared to the Audi 8J TTS Roadster , the 8S TTS Roadster was 21 mm shorter (at 4177 mm), 10 mm narrower (1832 mm) and had a 37 mm longer wheelbase (2505 mm). Furthermore, the 8S TTS Roadster had a drag coefficient of 0.30 Cd.

Suspension

The Audi 8S TTS Roadster had MacPherson strut front suspension and independent, four-link rear suspension. As standard, the TTS Roadster was fitted with the third generation of Audi’s adaptive damper control system, ‘Audi magnetic ride’. With Audi magnetic ride, the dampers were filled with magnetorheological fluid and damper resistance could be varied by the application of a magnetic field to the fluid. Audi magnetic ride also enabled the driver to select from comfort, auto or dynamic settings.

Steering

The Audi 8S TTS Roadster had variable ratio, electromechanical steering. The TTS Roadster was also fitted ‘Audi drive select’ as standard so that the driver could adjust engine characteristics and steering assistance via comfort, auto, dynamic, efficiency and individual settings.

Safety equipment

Standard safety equipment for the Audi 8S TTS Roadster included dual front airbags, front side airbags with head/thorax protection, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with load limiters and pretensioners.

As standard, the Audi TTS Roadster was also fitted with:

• Active lane assist: helped drivers remain in their lane by making slight steering corrections via the electromechanical steering if necessary; and,
• Attention Assist: monitored driver behaviour for signs of inattentiveness and issued a warning tone and visual signal if detected.

Features: Audi 8S TTS Roadster

Standard features for the Audi 8S TTS Roadster included 19-inch alloy wheels in a five-arm facet design, a 155 watt Audi sound system with nine speakers, two bass boxes and a five-channel amplifier, a CD/DVD player, digital radio tuner (DAB+), Bluetooth mobile phone connectivity and audio streaming, auxiliary inputs (3.5 mm, SDXC card readers and USB), voice recognition, 10GB flash memory, Audi’s MMI navigation plus system with live traffic updates, climate control air conditioning, ‘S’ front sport seats, power adjustable and heated front seats, Alcantara seat panels with leather bolsters, cruise control, LED headlights, LED daytime driving lights, a rear view camera, front and rear parking sensors, automatic headlights, rain-sensing wipers, a leather steering wheel with gearshift paddles, remote central locking with proximity key (i.e. keyless entry), power windows and mirrors, tilt and telescopic steering wheel adjustment, an auto-dimming rear view mirror, push-button start, a 12 volt power socket in the luggage compartment, tyre pressure monitoring, a tyre repair kit, trip computer and an immobiliser.

Inside, the 8S TTS Roadster featured Audi’s ‘virtual cockpit’ which utilised a 12.3-inch, high-resolution LCD within the driver’s instrument binnacle. The ‘virtual cockpit’ enabled the driver to select from two modes –

• Classic: the speedometer and rev counter were in the foreground; and,
• Infotainment: the virtual instruments were smaller to provide room for other functions such as the navigation map.

At the lower edge of the virtual cockpit, the displays for ambient temperature and time were permanently visible.

Specifications

• Specifications: Audi 8S TTS Coupe and TTS Roadster (October 2015)
• Specifications: Audi 8S TTS Coupe and TTS Roadster (December 2016)

Review: Audi 8S.II TTS Roadster (2019-on)

Overview

The Audi 8S.II TTS Roadster will be released in Australia in the second quarter of 2019. The 8S.II TTS Roadster will be powered by a more powerful 2.0 TFSI engine which is mated to a seven-speed double clutch transmission (previously six-speed). With this powertrain, the Audi 8S.II TTS Roadster can accelerate from rest to 100 km/h in 4.8 seconds.

Visually, the Audi 8S.II TTS Roadster can be identified by a new horizontal blade in its front bumper and, at the rear, a wider diffuser.

Features

Further information regarding features for the Audi 8S.II TTS Roadster will be available closer to launch.

Related links

• audi.com.au: Audi TTS Roadster

Overview

Released in November 1990, the Audi D1 V8 was a large, luxury sedan. Manufactured in Neckarsulm, Germany, the Audi V8 was powered by a 3.6-litre V8 petrol engine with four valves per cylinder and twin double overhead camshafts (per cylinder bank). Driving all four-wheels via its ‘quattro’ four-wheel drive system, the engine was mated to a four-speed ZF 4HP24A automatic transmission with Sport, Economic and Manual modes.

The Audi V8 had a galvanized steel body that was 4861 mm long, 1814 mm wide, 1420 mm tall and had a 2703 mm long wheelbase. Furthermore, the V8 had MacPherson strut front suspension and independent rear suspension with trapezoidal links.

quattro

The Audi V8 was fitted with a permanent four-wheel drive ‘quattro’ system. In normal conditions, the system provided a 50:50 front:rear torque split. However, up to 80 per cent of the engine’s torque could be directed to either axle via an electronically-controlled multi-plate hydraulic transfer clutch. The rear axle was also fitted with a torque sensing (‘Torsen’) differential.

Safety equipment

Standard safety equipment for the Audi V8 consited of a driver’s airbag and ABS.

Brakes

The Audi V8 had ventilated 310 mm by 25 mm front brake discs (with the caliper inside the disc) and 269 mm by 20 mm rear discs.

Features

Standard features for the Audi V8 included 15-inch alloy wheels, an eight speaker sound system with a radio and cassette player, climate control air conditioning, power adjustable front seats, leather upholstery, cruise control, front and rear fog lights, central locking, power windows and mirrors, a power sunroof, trip computer and an alarm system.

Related links

• Wikipedia.org: Audi V8

Review: Audi 8S.I TTS Coupe (2015-18)

Overview

Released in Australia in October 2015, the Audi 8S TTS Coupe was an all-wheel drive, two-plus-two seat coupe. Manufactured in Gyor, Hungary, the Audi TTS Coupe was powered by a 2.0-litre turbocharged petrol engine that was mated to a six-speed double clutch transmission (DCT or Audi’s ‘S-Tronic’).

2.0 TFSI engine

Compared to Audi’s standard 2.0 TFSI engine, changes for the TTS Coupe’s CJXG engine included pistons with stronger bolts, new piston rings and reinforced connecting rods, a larger turbocharger which provided maximum boost pressure of up to 1.2 bar, a high-performance intercooler that was integrated into the water circuit (to reduce the temperature of the compressed air) and a compression ratio of 9.3:1. Other features of the engine included:

• The use of indirect injection – to supplement FSI direct petrol injection – at part engine loads to reduce fuel consumption and particulate emissions. As such, FSI injection – which operated at pressures up to 200 bar – was used on start-up and at higher loads;
• An exhaust valve lift system which varied the stroke of the valves in two stages: the camshaft on the intake side could be adjusted steplessly through 30 degrees of crankshaft angle while 60 degrees of adjustment was available on the exhaust side;
• An exhaust manifold that was integrated into the cylinder head and bathed in coolant;
• A lightweight aluminium-silicon alloy cylinder head;
• Two balance shafts which rotated at twice the speed of the crankshaft to reduce vibrations; and,
• Audi’s ‘Start-Stop’ system which could shut down the engine when the vehicle was stationary to conserve fuel.

Although this engine produces peak power of 228 kW for international markets, the Australia-specific output for this engine was 210 kW.

The Audi 8S TTS Coupe could accelerate from rest to 100 km/h in 4.7 seconds and had an electronically-limited top speed of 250 km/h. Over the combined ADR 81/02 test cycle, fuel consumption for the 8S TTS Coupe was 6.8 litres per 100 km.

Haldex 5 all-wheel drive (‘quattro’)

The Audi 8S TTS Coupe had a fifth-generation Haldex all-wheel drive system which utilised an electronically controlled and hydraulically actuated multi-plate clutch that was located in front of the rear axle differential (at the end of the prop shaft). If there was a loss of front-wheel traction, or such a loss was anticipated by on-board sensors, the clutch would engage to transfer torque to the rear axle ‘in just a few milliseconds’ for a 50:50 front:rear torque split.

As a result of new software which determined the parameters for engagement of the multi-plate clutch, the all-wheel drive system had three selectable modes:

• Efficiency: for maximum fuel efficiency, the rear axle was decoupled such that the vehicle was front-wheel drive only. Nonetheless, all-wheel drive would still be activated before torque was required at all four wheels if a loss of traction was anticipated;
• Auto: the quattro system provided a 90:10 front:rear torque split; and,
• Dynamic: the multi-plate clutch would engage earlier and to a higher degree.

The TTS Coupe also had a torque vectoring function which applied the brakes to the inside driven wheels when cornering to transfer torque to the outside wheels and reduce understeer.

Dimensions and body

Compared to the Audi 8J TTS Coupe , the 8S TTS Coupe was 7 mm shorter (at 4191 mm), 10 mm narrower (1832 mm) and the same height (1343 mm), but had a 37 mm longer wheelbase (2505 mm). Like its predecessor, the TTS Coupe’s body made extensive use of aluminium, including the side sills, roof frame, bonnet, doors and bootlid.

The Audi TTS Coupe could be identified by its broader and flatter single frame grille and V-contoured bonnet. The TTS Coupe also had ‘dynamic’ indicator lights (front and rear) which illuminated sequentially in the direction that the driver indicated.

Suspension

The Audi 8S TTS Coupe had MacPherson strut front suspension and independent, four-link rear suspension. As standard, the TTS Coupe was fitted with the third generation of Audi’s adaptive damper control system, ‘Audi magnetic ride’. For Audi magnetic ride, the dampers were filled with magnetorheological fluid and damper resistance could be varied by the application of a magnetic field to the fluid. Audi magnetic ride also enabled the driver to select from comfort, auto or dynamic settings.

Steering

The Audi 8S TTS Coupe had variable ratio, electromechanical steering. The TTS Coupe was also fitted ‘Audi drive select’ as standard, enabling the driver to control engine characteristics and steering assistance via comfort, auto, dynamic, efficiency and individual settings.

Safety equipment

Standard safety equipment for the Audi 8S TTS Coupe included dual front airbags, front side airbags, curtain airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with load limiters and pretensioners.

As standard, the TTS Coupe was also fitted with:

• Audi active lane assist: used the front camera to detect lane markings at speeds of 65 km/h and above. If the Audi TTS Coupe approached a lane marking without the driver having previously indicated, the electromechanical steering could provide an adjustment to bring the vehicle back into its lane. Using the MMI system, the driver could determine whether this system should be activated at all times or only before the lane marking was crossed. As an option, the driver could choose to have steering wheel vibrations as a warning signal; and,
• Attention Assist: monitored driver behaviour for signs of inattentiveness and issues a warning tone and visual signal if detected.

Euro NCAP testing

In Euro NCAP testing , the Audi 8S TT Coupe received a four star safety rating which included an 81 per cent adult occupant protection rating, a 68 per cent child occupant protection rating and a 64 per cent ‘safety assist’ rating. In the frontal offset test, protection of the front occupants’ heads and thighs were rated as good, though chest protection for the passenger and lower leg protection for both occupants was rated as adequate (i.e. a slight risk of serious injury). Maximum points, however, were awarded in the side impact and pole tests.

Features: Audi 8S TTS Coupe

Standard features for the Audi 8S TTS Coupe included 19-inch alloy wheels in a five-arm facet design, a 155 watt Audi sound system with nine speakers, two bass boxes and a five-channel amplifier, a CD/DVD player, digital radio tuner (DAB+), Bluetooth mobile phone connectivity and audio streaming, auxiliary inputs (3.5 mm, SDXC card readers and USB), voice recognition, 10GB flash memory, Audi’s MMI navigation plus system with live traffic updates, climate control air conditioning, ‘S’ power adjustable front sport seats, Alcantara seat panels with leather bolsters, cruise control, LED headlights, LED daytime driving lights, a rear view camera, front and rear parking sensors, automatic headlights, rain-sensing wipers, a leather steering wheel with gearshift paddles, remote central locking with proximity key (i.e. keyless entry), power windows and mirrors, tilt and telescopic steering wheel adjustment, an auto-dimming rear view mirror, push-button start, a 12 volt power socket in the luggage compartment, tyre pressure monitoring, a tyre repair kit, trip computer and an immobiliser.

Inside, the 8S TTS Coupe featured Audi’s ‘virtual cockpit’ which utilised a 12.3-inch, high-resolution LCD within the driver’s instrument binnacle. The virtual cockpit enabled the driver to select from two modes –

• Classic: the speedometer and rev counter were in the foreground; and,
• Infotainment: the virtual instruments were smaller to provide room for other functions such as the navigation map.

At the lower edge of the virtual cockpit, the displays for ambient temperature and time were permanently visible.

Specifications

• Specifications: Audi 8S TTS Coupe and TTS Roadster (October 2015)
• Specifications: Audi 8S TTS Coupe and TTS Roadster (December 2016)

Review: Audi 8S.II TTS Coupe (2019-on)

Overview

The Audi 8S.II TTS Coupe was released in Australia in September 2019. Unlike Europe, however, Australia did not receive a more powerful 2.0 TFSI engine (225 kW at 5400-6500 rpm and 400 Nm at 2000-5300 rpm) and seven-speed double clutch.

Visually, the Audi 8S.II TTS Coupe could be identified by a new horizontal blade in its front bumper and, at the rear, a wider diffuser.

Safety equipment

For the Audi 8S.II TTS Coupe, standard safety equipment was extended to include ‘Audi side assist’ which operated at speeds above 15 km/h and used rear radar sensors to monitor traffic up to 70 metres behind the Audi TTS Coupe. If another vehicle approached quickly or was in the driver’s blind spot, a warning LED in the housing of the appropriate door mirror would illuminate. Furthermore, if the driver activated the indicator to change lanes, the LED would blink rapidly to warn the driver.

Features

For the Audi 8S.II TTS Coupe, standard features were extended to include a 680 watt Bang & Olufsen sound system with twelve speakers, heated front seats and ‘Fine Nappa’ leather upholstery.

Review: Audi 8J.I TTS Roadster (2008-10)

Overview

Released in August 2008, the Audi 8J Series I (8J.I) TTS Roadster was a two-door convertible with a soft-top roof. Manufactured in Gyor, Hungary, the Audi TTS Roadster was powered by a 2.0-litre turbocharged petrol engine that was mated to either a six-speed manual or double clutch transmission (DCT, or Audi’s ‘S Tronic’).

CDLB engine

The 8J TTS Roadster was powered by Audi’s CDLB engine which had a grey cast iron block, a cast aluminium alloy cylinder head, double overhead camshafts (roller chain and belt driven), variable intake camshaft over a range of 42 degrees, four valves per cylinder actuated by roller finger cam followers, a BorgWarner K04 turbocharger which provided peak boost pressure of 1.2 bar (17.4 psi), a variable intake manifold, direct injection (Audi’s ‘Fuel Stratified Injection’ or FSI) and a compression ratio of 9.8:1.

Comparison with TT Roadster

Based on the Audi 8J TT Roadster , the TTS Roadster had a greater emphasis on performance and, in addition to its high-output engine, was fitted with a magnetic ride control system which provided adaptive damping and selectable ‘Normal’ and ‘Sport’ modes. Visually, the TTS Roadster was distinguished by its redesigned front mask with larger air intakes, extended side sills, rear diffuser and quad exhaust pipes.

Dimensions and suspension

The Audi TTS Roadster was 4198 mm long, 1842 mm wide, 1343 mm tall and had a 2467 mm long wheelbase. Furthermore, the TTS Roadster had MacPherson strut front suspension with transverse links and four-link independent rear suspension.

quattro

The Audi TTS Roadster was fitted with a fourth-generation Haldex all-wheel drive system. In normal conditions, 90 per cent of the engine’s torque was directed to the front wheels. Unlike earlier systems, however, the fourth generation Haldex system could pro-actively engage the multi-plate clutch via a feeder pump when a loss of traction was anticipated, thereby transferring torque to the rear wheels before traction was lost. Previously, a difference in front and rear axle speeds – caused by wheelspin – was required to engage all-wheel drive.

Safety equipment

Standard safety equipment for the Audi TTS Roadster included dual front airbags, front side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control, automatically deploying roll-over bars and front seatbelts with pretensioners and load limiters.

Brakes

The TTS Roadster was fitted 340 mm front and 310 mm rear ventilated disc brakes.

Features

Standard features for the Audi TTS Roadster included 18-inch alloy wheels with 245/40-size tyres, a nine speaker stereo with six-disc CD player, auxiliary inputs and MP3-compatibility, climate control air conditioning, Silk Nappa leather upholstery, power adjustable and heated front seats, cruise control, Bluetooth connectivity, bi-xenon headlights with washers, daytime running lights, front and rear fog lights, automatic headlights, rain-sensing wipers, split and folding rear seats with a load-through facility, leather-wrapped steering wheel and gearshift, remote central locking, power windows and heated mirrors, tilt and telescopic steering wheel adjustment, courtesy lamps, a power-operated wind deflector, trip computer and an immobiliser.

Related links

• Press Kit: Audi 8J TTS Coupe and Roadster (August 2008)
• Technical data: Audi 8J TTS Roadster (August 2008)

Review: Audi 8J.II TTS Roadster (2010-14)

Overview

Released in September 2010, the Audi 8J Series II (8J.II) TTS Roadster introduced an upgraded Magnetic Ride Control system with a ‘Sports’ mode that provided greater throttle response and steering weight when engaged. Visually, Audi 8J.II TTS Roadster could be identified by its chrome-ringed fog lights and horizontal bar grille.

Safety equipment and features

Compared to its 8J.I predecessor, standard safety equipment and features for the 8J.II TTS Roadster were largely unchanged.

Related links

• Wikipedia.org: Audi 8J TTS

Review: Audi 8S.I TT RS Coupe (2017-19)

Overview

Released in Australia in May 2017, the Audi 8S TT RS Coupe was an all-wheel drive, two-plus-two seat coupe. Manufactured in Gyor, Hungary, the Audi TT RS Coupe was powered by a 2.5-litre turbocharged inline five-cylinder petrol engine that was mated to a seven-speed double clutch transmission (DCT or Audi’s ‘S-Tronic’).

2.5 TFSI engine

The newly developed 2480 cc five-cylinder petrol engine for the Audi TT RS Coupe had an aluminium block (in contrast to the graphite cast iron block of the CEPA engine in the 8J TT RS Coupe ), an aluminium-silicon cylinder head with integrated turbocharger, chain-driven double overhead camshafts, four valves per cylinder actuated by roller finger followers, variable intake and exhaust camshaft timing, variable exhaust valvelift and direct petrol injection (Audi’s ‘FSI’). To reduce fuel consumption, the 2.5 TFSI engine had a start-stop function which enabled it to shut down when the vehicle was stationary in traffic.

The Audi TT RS Coupe could accelerate from rest to 100 km/h in 3.7 seconds and had an electronically limited top speed of 250 km/h. Over the combined ADR 81/02 test cycle, fuel consumption was 8.4 litres per 100 km.

Haldex 5 all-wheel drive (‘quattro’)

The Audi 8S TT RS Coupe had a fifth-generation Haldex all-wheel drive system which utilised an electronically controlled and hydraulically actuated multi-plate clutch that was located in front of the rear axle differential (at the end of the prop shaft). If there was a loss of front-wheel traction, or such a loss was anticipated by on-board sensors, the clutch would engage to transfer torque to the rear axle ‘in just a few milliseconds’ for a 50:50 front:rear torque split.

Dimensions and body

Compared to the related Audi 8S TT Coupe , the 8S TT RS Coupe was 14 mm longer (at 4191 mm) and 9 mm lower (1353 mm), though width (1832 mm) and wheelbase length (2505 mm) were unchanged. The Audi 8S TT RS Coupe was based on Volkswagen AG’s Modular Transverse Matrix (MQB) architecture. To reduce mass, however, the body made extensive use of aluminium, including the side sills, roof frame, bonnet, doors and bootlid.

The Audi 8S TT RS Coupe had an unladen weight of 1515 kg (included 75 kg driver).

Suspension

The Audi 8S TT RS Coupe had MacPherson strut front suspension and independent, four-link rear suspension. As standard, the TT RS Coupe was fitted with the third generation of Audi’s adaptive damper control system, ‘Audi magnetic ride’. With Audi magnetic ride, the dampers were filled with magnetorheological fluid and damper resistance could be varied by the application of a magnetic field to the fluid. Audi magnetic ride also enabled the driver to select from comfort, auto or dynamic settings.

Steering

The Audi 8S TT RS Coupe had variable ratio, electromechanical steering. The ‘Audi drive select’ function also enabled the driver to adjust engine characteristics and steering assistance via comfort, auto, dynamic, efficiency and individual settings.

Safety equipment

Standard safety equipment for the Audi 8S TT RS Coupe included dual front airbags, front seat-mounted side airbags, curtain airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with load limiters and pre-tensioners.

As standard, the TT RS Coupe was equipped with –

• Active lane assist: helped drivers remain in their lane by making slight steering corrections via the electromechanical steering if necessary and alerting the driver via steering wheel vibrations;
• Side assist: operating at speeds above 15 km/h, Audi side assist used two rear radar sensors to monitor traffic up to 70 metres behind the TT RS. If another vehicle approached quickly or was in the driver’s blind spot, a warning LED in the housing of the appropriate door mirror would illuminate. If the driver activated the indicator to change lanes, the LED would blink rapidly to warn the driver; and,
• Attention Assist: monitored driver behaviour for signs of inattentiveness and issued a warning tone and visual signal if detected.

The Audi 8S TT RS Coupe also had an ‘active bonnet’ which deployed pyrotechnic charges in the event of a pedestrian collision to raise the height of the bonnet and locks to secure it to provide clearance over ‘hard points’ in the engine bay. In doing so, the likely severity of the pedestrian’s impact was reduced.

Euro NCAP testing

In Euro NCAP testing , the Audi 8S TT Coupe received a four star safety rating which included an 81 per cent adult occupant protection rating, a 68 per cent child occupant protection rating and a 64 per cent ‘safety assist’ rating. In the frontal offset test, protection of the front occupants’ heads and thighs were rated as good, though chest protection for the passenger and lower leg protection for both occupants was rated as adequate (i.e. a slight risk of serious injury). Maximum points, however, were awarded in the side impact and pole tests.

Wheels, tyres and brakes

For Australian delivered vehicles, the Audi 8S TT RS Coupe had ‘Audi Sport’ seven-spoke 9.0J x 20-inch alloy wheels in matt titanium with 255/30 R20 tyres. Furthermore, the Audi 8S TT RS Coupe had 370 mm by 34 mm ventilated front brake discs and 310 mm by 22 mm ventilated rear discs.

Rather than a spare wheel, the Audi 8S TT RS Coupe had a tyre repair kit.

Features: Audi 8S TT RS Coupe

The infotainment system for the Audi 8S TT RS Coupe consisted of a 155 watt sound system with nine speakers, two bass boxes and a five-channel amplifier, a CD/DVD player, digital radio tuner (DAB+), ‘Audi music interface’ with two USB inputs and auxiliary input socket (3.5 mm), two SDXC card readers, 10GB flash memory, Bluetooth mobile phone connectivity and audio streaming, Audi smartphone interface for Apple CarPlay and Android Auto smartphone integration and Audi’s MMI navigation plus system with seven-inch display and live traffic updates.

Beyond this, standard features for the Audi 8S TT RS Coupe included power adjustable and heated ‘RS’ front seats with pneumatic adjustment for the side bolsters, Nappa leather upholstery with diamond pattern stitching, climate control air conditioning, cruise control, LED headlights with high beam assist (automatically switched between low and high beam), LED daytime running lights, dusk-sensing headlights, rain-sensing wipers, parking sensors (front and rear) and a rear view camera (‘Audi parking system plus’), split fold rear seats, a leather steering wheel with Alcantara trim and gearshift paddles, remote central locking with proximity key, power windows, power adjustable and heated door mirrors with power folding, kerb view function for the passenger side mirror, tilt and telescopic steering wheel adjustment, an auto-dimming rear view mirror, push-button start, rear privacy glass, tyre pressure monitoring, ‘aluminium race’ interior inlays, stainless steel pedals, ambient interior lighting, a 12 volt power socket (luggage compartment), floor mats, a trip computer and an immobiliser.

Inside, the 8S TT RS featured Audi’s ‘virtual cockpit’ which utilised a 12.3-inch, high-resolution LCD display within the driver’s instrument binnacle. The virtual cockpit enabled the driver to select from two modes –

• Classic: the speedometer and rev counter were in the foreground; and,
• Infotainment: the virtual instruments were smaller to provide room for other functions such as the navigation map.

Specifications

• Specifications: Audi 8S TT RS Coupe and Roadster (May 2017)
• Specifications: Audi 8S TT RS Coupe and Roadster (June 2018)

Review: Audi 8S.II TT RS Coupe (2019-on)

Overview

The Audi 8S.II TT RS Coupe is expected to be released in Australia in mid-2019. Visually, the 8S.II TT RS Coupe can be identified by its revised front mask which has larger lateral air inlets (each divided by vertical strips) that extend almost to the front wheel wells. At the rear, the redesigned rear wing has side winglets and there are vertical design elements above the rear diffusor.

The Audi 8S.II TT RS Coupe will also be available in three new paint finishes: Kyalami green, Pulse orange and Turbo blue.

Features

Further information regarding features for the Audi 8S.II TT RS Coupe will be available closer to launch.

Review: Audi 8S.I TT RS Roadster (2017-19)

Overview

Released in Australia in May 2017, the Audi 8S TT RS Roadster was an all-wheel drive, two-plus-two seat Roadster. Manufactured in Gyor, Hungary, the Audi TT RS Roadster was powered by a 2.5-litre turbocharged inline five-cylinder petrol engine that was mated to a seven-speed double clutch transmission (DCT or Audi’s ‘S-Tronic’).

2.5 TFSI engine

The newly developed 2480 cc five-cylinder petrol engine for the Audi TT RS Roadster had an aluminium block (in contrast to the graphite cast iron block of the CEPA engine in the 8J TT RS Coupe ), an aluminium-silicon cylinder head with integrated turbocharger, chain-driven double overhead camshafts, four valves per cylinder actuated by roller finger followers, variable intake and exhaust camshaft timing, variable exhaust valvelift and direct petrol injection (Audi’s ‘FSI’). To reduce fuel consumption, the 2.5 TFSI engine had a start-stop function which enabled it to shut down when the vehicle was stationary in traffic.

The Audi TT RS Roadster could accelerate from rest to 100 km/h in 3.9 seconds and had an electronically limited top speed of 250 km/h. Over the combined ADR 81/02 test cycle, fuel consumption was 8.6 litres per 100 km.

Haldex 5 all-wheel drive (‘quattro’)

The Audi 8S TT RS Roadster had a fifth-generation Haldex all-wheel drive system which utilised an electronically controlled and hydraulically actuated multi-plate clutch that was located in front of the rear axle differential (at the end of the prop shaft). If there was a loss of front-wheel traction, or such a loss was anticipated by on-board sensors, the clutch would engage to transfer torque to the rear axle ‘in just a few milliseconds’ for a 50:50 front:rear torque split.

Dimensions and body

Compared to the related Audi 8S TT Roadster , the 8S TT RS Roadster was 14 mm longer (at 4191 mm), 27 mm lower (1333 mm) and had a 3 mm shorter wheelbase (2502 mm), though width (1832 mm) was unchanged. The Audi 8S TT RS Roadster was based on Volkswagen AG’s Modular Transverse Matrix (MQB) architecture. Furthermore, the power-operated roof could be operated at speeds up to 50 km/h.

To reduce mass, however, the body made extensive use of aluminium, including the side sills, roof frame, bonnet, doors and bootlid. The Audi 8S TT RS Roadster had an unladen weight of 1605 kg (included 75 kg driver).

Suspension

The Audi 8S TT RS Roadster had MacPherson strut front suspension and independent, four-link rear suspension. As standard, the TT RS Roadster was fitted with the third generation of Audi’s adaptive damper control system, ‘Audi magnetic ride’. With Audi magnetic ride, the dampers were filled with magnetorheological fluid and damper resistance could be varied by the application of a magnetic field to the fluid. Audi magnetic ride also enabled the driver to select from comfort, auto or dynamic settings.

Steering

The Audi 8S TT RS Roadster had variable ratio, electromechanical steering. The ‘Audi drive select’ function also enabled the driver to adjust engine characteristics and steering assistance via comfort, auto, dynamic, efficiency and individual settings.

Safety equipment

Standard safety equipment for the Audi 8S TT RS Roadster included dual front airbags, front seat-mounted side airbags with thorax/head protection, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with load limiters and pre-tensioners.

As standard, the TT RS Roadster was equipped with –

• Active lane assist: helped drivers remain in their lane by making slight steering corrections via the electromechanical steering if necessary and alerting the driver via steering wheel vibrations;
• Side assist: operating at speeds above 15 km/h, Audi side assist used two rear radar sensors to monitor traffic up to 70 metres behind the TT RS Roadster. If another vehicle approached quickly or was in the driver’s blind spot, a warning LED in the housing of the appropriate door mirror would illuminate. If the driver activated the indicator to change lanes, the LED would blink rapidly to warn the driver; and,
• Attention Assist: monitored driver behaviour for signs of inattentiveness and issued a warning tone and visual signal if detected.

The Audi 8S TT RS Roadster also had an ‘active bonnet’ which deployed pyrotechnic charges in the event of a pedestrian collision to raise the height of the bonnet and locks to secure it to provide clearance over ‘hard points’ in the engine bay. In doing so, the likely severity of the pedestrian’s impact was reduced.

Wheels, tyres and brakes

For Australian delivered vehicles, the Audi 8S TT RS Roadster had ‘Audi Sport’ seven-spoke 9.0J x 20-inch alloy wheels in matt titanium with 255/30 R20 tyres. Furthermore, the Audi 8S TT RS Roadster had 370 mm by 34 mm ventilated front brake discs and 310 mm by 22 mm ventilated rear discs.

Rather than a spare wheel, the Audi 8S TT RS Roadster had a tyre repair kit.

Features: Audi 8S TT RS Roadster

The infotainment system for the Audi 8S TT RS Roadster consisted of a 155 watt sound system with nine speakers, two bass boxes and a five-channel amplifier, a CD/DVD player, digital radio tuner (DAB+), ‘Audi music interface’ with two USB inputs and auxiliary input socket (3.5 mm), two SDXC card readers, 10GB flash memory, Bluetooth mobile phone connectivity and audio streaming, Audi smartphone interface for Apple CarPlay and Android Auto smartphone integration and Audi’s MMI navigation plus system with seven-inch display and live traffic updates.

Beyond this, standard features for the Audi 8S TT RS Roadster included power adjustable and heated ‘RS’ front seats with pneumatic adjustment for the side bolsters, Nappa leather upholstery with diamond pattern stitching, climate control air conditioning, neck-level heating, a power-operated wind deflector, cruise control, LED headlights with high beam assist (automatically switched between low and high beam), LED daytime running lights, dusk-sensing headlights, rain-sensing wipers, parking sensors (front and rear) and a rear view camera (‘Audi parking system plus’), a leather steering wheel with Alcantara trim and gearshift paddles, remote central locking with proximity key, power windows, power adjustable and heated door mirrors with power folding, kerb view function for the passenger side mirror, tilt and telescopic steering wheel adjustment, an auto-dimming rear view mirror, push-button start, rear privacy glass, ‘aluminium race’ interior inlays, stainless steel pedals, ambient interior lighting, a 12 volt power socket (luggage compartment), floor mats, tyre pressure monitoring, a trip computer and an immobiliser

Inside, the 8S TT RS Roadster featured Audi’s ‘virtual cockpit’ which utilised a 12.3-inch, high-resolution LCD within the driver’s instrument binnacle. The virtual cockpit enabled the driver to select from two modes –

• Classic: the speedometer and rev counter were in the foreground; and,
• Infotainment: the virtual instruments were smaller to provide room for other functions such as the navigation map.

Specifications

• Specifications: Audi 8S TT RS Coupe and Roadster (May 2017)
• Specifications: Audi 8S TT RS Coupe and Roadster (June 2018)

Review: Audi 8S.II TT RS Roadster (2019-on)

Overview

The Audi 8S.II TT RS Roadster is expected to be released in Australia in mid-2019. Visually, the 8S.II TT RS Roadster can be identified by its revised front mask which has larger lateral air inlets (each divided by vertical strips) that extend almost to the front wheel wells. At the rear, the redesigned rear wing has side winglets and there are vertical design elements above the rear diffusor.

The Audi 8S.II TT RS Roadster will also be available in three new paint finishes: Kyalami green, Pulse orange and Turbo blue.

Features

Further information regarding features for the Audi 8S.II TT RS Roadster will be available closer to launch.

Review: Audi 8J.I TTS Coupe (2008-10)

Overview

Released in August 2008, the Audi 8J Series I (8J.I) TTS Coupe was a two-door, four-seat coupe. Manufactured in Gyor, Hungary, the Audi TTS Coupe was powered by a 2.0-litre turbocharged petrol engine that was mated to either a six-speed manual or double clutch transmission (DCT, or Audi’s ‘S Tronic’). With the manual transmission, the TTS Coupe could accelerate from rest to 100 km/h in 5.4 seconds; with the DCT, this decreased to 5.2 seconds.

CDLB engine

The 8J TTS Coupe was powered by Audi’s CDLB engine which had a grey cast iron block, a cast aluminium alloy cylinder head, double overhead camshafts (roller chain and belt driven), variable intake camshaft over a range of 42 degrees, four valves per cylinder actuated by roller finger cam followers, a BorgWarner K04 turbocharger which provided peak boost pressure of 1.2 bar (17.4 psi), a variable intake manifold, direct injection (Audi’s ‘Fuel Stratified Injection’ or FSI) and a compression ratio of 9.8:1.

Comparison with TT Coupe

Based on the Audi 8J TT Coupe , the TTS Coupe had a greater emphasis on performance and, in addition to its high-output engine, was fitted with a magnetic ride control system which provided adaptive damping and selectable ‘Normal’ and ‘Sport’ modes. Visually, the TTS Coupe was distinguished by its redesigned front mask with larger air intakes, extended side sills, rear diffuser and quad exhaust pipes.

Dimensions and suspension

The Audi TTS Coupe was 4198 mm long, 1842 mm wide, 1343 mm tall and had a 2467 mm long wheelbase. Furthermore, the TTS Coupe had MacPherson strut front suspension with transverse links and four-link independent rear suspension.

quattro

The Audi TTS Coupe was fitted with a fourth-generation Haldex all-wheel drive system. In normal conditions, 90 per cent of the engine’s torque was directed to the front wheels. Unlike earlier systems, however, the fourth generation Haldex system could pro-actively engage the multi-plate clutch via a feeder pump when a loss of traction was anticipated, thereby transferring torque to the rear wheels before traction was lost. Previously, a difference in front and rear axle speeds – caused by wheelspin – was required to engage all-wheel drive.

Safety equipment

Standard safety equipment for the Audi 8J TTS Coupe included dual front airbags, front side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with pretensioners and load limiters.

Brakes

The Audi TTS was fitted 340 mm front and 310 mm rear ventilated disc brakes.

Features

Standard features for the Audi 8J TTS Coupe included 18-inch alloy wheels with 245/40 ZR18 high performance tyres, a six speaker stereo with a six-disc CD player, auxiliary inputs and MP3-compatibility, climate control air conditioning, Silk Nappa leather upholstery, power adjustable front seats, Bluetooth connectivity, bi-xenon headlights with washers, daytime running lights, front fog lights, rain-sensing wipers, split and folding rear seats, a leather-wrapped steering wheel, remote central locking, power windows and heated mirrors, tilt and telescopic steering wheel adjustment, courtesy lamps, a trip computer and an immobiliser.

Related links

• Press Kit: Audi 8J TTS Coupe and Roadster (August 2008)
• Technical data: Audi 8J TTS Coupe (August 2008)

Review: Audi 8J.II TTS Coupe (2010-14)

Overview

Released in September 2010, the Audi 8J Series II (8J.II) TTS Coupe introduced an upgraded Magnetic Ride Control system with a ‘Sports’ mode that provided greater throttle response and steering weight when engaged. Visually, 8J.II TTS Coupe could be identified by its chrome-ringed fog lights and horizontal bar grille.

Safety equipment and features

Compared to its 8J.I predecessor, standard safety equipment and features for the 8J.II TTS Coupe were largely unchanged.

Related links

• Wikipedia.org: Audi 8J TTS

Overview

Released in September 2009, the Audi 8J TT RS Coupe was a four-seat performance coupe. Manufactured in Gyor, Hungary, the Audi TT RS Coupe was powered by a 2.5-litre turbocharged inline five-cylinder petrol engine mated to a close-ratio six-speed manual transmission.

From June 2011, the TT RS was available Audi’s seven-speed double clutch transmission (‘S-Tronic’) – this transmission enabled manual shifts via the steering wheel gearshift paddles, but also had two fully automatic shift modes and a ‘launch control’ setting. In February 2013, the TT RS Plus was released.

2.5 R5 TFSI: CEPA and CEPB engines

The Audi TT RS Coupe’s CEPA engine was based on the naturally aspirated 2.5-litre engine which powered the North American Volkswagen Bora and Jetta. Hand-built in Gyor, Hungary, the CEPA engine had a graphite cast iron block, a die-forged steel crankshaft supported by six main bearings, forged connecting rods, cast aluminium alloy pistons, a cast aluminium-silicon alloy cylinder head, chain-driven double overhead camshafts, variable intake and exhaust camshaft timing, four valves per cylinder actuated by roller finger followers, direct injection at a pressure of up to 120 bar and a compression ratio of 10.0:1. Furthermore, the CEPA engine was fitted with BorgWarner K16 turbocharger which provided peak boost pressure of 1.2 bar (17.4 psi).

For the TT RS Plus, the higher-output CEPB engine differed from the CEPA engine in that its turbocharger provided peak boost pressure of 1.25 bar (18.1 psi) and injection pressure increased to 130 bar.

Suspension and dimensions

Based on the Audi 8J TT Coupe , the TT RS Coupe had MacPherson strut front suspension with transverse links and four-link independent rear suspension. The TT RS, however, was also fitted with Magnetic Ride Control, where the dampers were filled with magnetorheological fluid and the application of a magnetic field could vary the suspension’s stiffness. The TT RS Coupe was 4198 mm long, 1842 mm wide, 1342 mm wide and had a 2468 mm long wheelbase.

quattro

The Audi TT RS Coupe was fitted with a fourth-generation Haldex all-wheel drive system. In normal conditions, 90 per cent of the engine’s torque was directed to the front wheels. Unlike earlier systems, however, the fourth generation Haldex system could pro-actively engage the multi-plate clutch via a feeder pump when a loss of traction was anticipated, thereby transferring torque to the rear wheels before traction was lost. Previously, a difference in front and rear axle speeds – caused by wheelspin – was required to engage all-wheel drive. For the TT RS, the Haldex system was modified to include a constant velocity joint before the cardan propeller shaft and a compact rear-axle differential to cope with the torque outputs.

The front axle also contained an electronic differential lock which could brake a spinning wheel to enable cross-axle torque transfer. When cornering, the inside front wheel could therefore be braked to reduce understeer.

Safety equipment

Standard safety equipment for the Audi TT RS Coupe included dual front airbags, front side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control, active front seat head restraints and front seatbelts with pretensioners and load limiters.

Brakes

The Audi TT RS was fitted with two-piece cross-drilled and radially vented 370 mm front brake discs with four-piston calipers and 312 mm rear discs with single-piston calipers.

Features

Standard features for the Audi TT RS Coupe included 19-inch alloy wheels, a six speaker stereo with a six-disc CD player, MP3-compatibility and auxiliary inputs, climate control air conditioning, Fine Nappa leather upholstery, power adjustable front seats, Bluetooth connectivity, cruise control, bi-xenon headlights with washers, front fog lights, automatic headlights, raisn-sensing wipers, split and folding rear seats, leather-wrapped steering wheel, remote central locking, power windows and heated mirrors, tilt and telescopic steering wheel adjustment, courtesy lamps, a trip computer and an immobiliser.

September 2010: Audi TT RS update

In September 2010, the Magnetic Ride Control was upgraded with the introduction of a ‘Sports’ mode that provided greater throttle response and steering weight when engaged.

2011 Audi TT RS Limited Edition

In June 2011, a Limited Edition model was released. Compared to the standard TT RS Coupe, the Limited Edition featured a twelve speaker Bose stereo, directional bi-xenon headlights, additional leather trim and LED interior lighting. Visually, the TT RS Coupe Limited Edition could be identified by its 19-inch five-spoke titanium-finish alloy wheels and black grille and window surrounds.

Specifications and technical data

• Specifications: Audi 8J TT RS Coupe (December 2009)
• Technical data: Audi 8J TT RS Coupe (December 2009)
• Technical data: Audi 8J TT RS Plus Coupe (February 2013)
• Specifications: Audi TTS Coupe, TTS Roadster and TT RS plus (October 2013)

Related links

• Brochure: Audi 8J TT RS (September 2009)
• Press Kit: Audi 8J TT RS Coupe (December 2009)
• Wikipedia.org: Audi 8J TT RS Coupe

Review: Audi 8N.I TT Roadster (2000-02)

Overview

Released in May 2000, the Audi 8N Series I (8N.I) TT Roadster was a two-seat, two-door soft-top convertible. Manufactured in Gyor, Hungary, the Audi 8N.I TT Roadster was powered by a 1.8-litre turbocharged four-cylinder petrol engine that was mated to a six-speed manual transmission.

Like its TT Coupe counterpart, the 8N TT Roadster was based on Volkswagen’s PQ34 platform which also underpinned the Volkswagen Mk.4 Golf . As such, the TT Roadster had MacPherson strut front suspension and, for quattro models, double transverse link rear suspension with trailing arms. The TT Roadster was 4041 mm long, 1764 mm wide, 1349 mm tall and had a 2429 mm long wheelbase.

quattro and electronic differential lock

The TT Roadster’s quattro system utilised a first generation Haldex electro-hydraulic limited-slip coupler (LSC) which consisted of a wet multi-plate clutch, a hydraulic pump and an electronically-controlled throttle valve. In normal conditions, 90 per cent of the engine’s torque was directed to the front wheels. If traction was lost, however, up to 50 per cent of the engine’s torque could be directed to the rear wheels.

Models with the quattro system were also fitted with an electronic differential lock which could brake a spinning wheel to transfer torque to the opposing front wheel (i.e. cross axle torque transfer). As such, the inside front wheel could be braked when cornering to reduce understeer.

Safety equipment

Standard safety equipment for the Audi 8N TT Roadster included dual front airbags, front seat-mounted head/thorax airbags, ABS, electronic brake force distribution, electronic stability control, traction control and front seatbelts with pretensioners and load limiters.

Features

Standard features for the Audi 8N TT Roadster included 17-inch alloy wheels, a six speaker 225 watt Bose sound system with six-stack CD player, climate control air conditioning, combination leather/Alcantara seats, front fog lamps, a leather-wrapped steering wheel and gearshift, remote central locking, power windows and mirrors, tilt and telescopic steering wheel adjustment, alarm and immobiliser. From 2002, the TT Roadster featured xenon headlights with washers.

Review: Audi 8N.II TT Roadster (2003-06)

Overview

Released in February 2003, the Audi 8N Series II (8N.II) TT Roadster introduced front-wheel drive models and a new six-speed ‘Tiptronic’ (automatic) transmission with sequential shift mode. Unlike the quattro models, however, the front-wheel drive models had torsion beam rear suspension.

Visually, the Audi 8N.II TT Roadster could be identified by its new grille with three horizontal bars, alloy wheel designs and paint colours; inside, there was new trim. From 2003, the TT Roadster was offered in ‘S-Line’ editions.

Safety equipment and features

Compared to its 8N.I predecessor, standard safety equipment and features for the Audi 8N.II TT Roadster were substantially unchanged.

Euro NCAP crash testing

In Euro NCAP crash testing , an Audi 8N.II TT Roadster received a four star adult occupant protection rating with a score of 27.54 out of 37. Protection from serious leg injury was marginal for the driver in the offset crash test and there was a moderate risk of serious chest injury in the side impact test.

Related links

• Wikipedia.org: Audi 8N TT

Review: Audi 8S.I TT Roadster (2015-18)

Overview

Released in Australia in July 2015, the Audi 8S TT Roadster was powered by a 2.0-litre turbocharged engine. Manufactured in Gyor, Hungary, the TT Roadster was available in front- and all-wheel drive models; a six-speed double clutch transmission (DCT or Audi’s ‘S-Tronic’) was fitted as standard.

2.0 TFSI EA888 engine

The 1984 cc EA888 four-cylinder petrol engine had a grey cast iron block with an 82.5 mm bore and a 92.8 mm stroke, a die-forged steel crankshaft with five main bearings, a cast aluminium alloy cylinder head, direct injection and port injection (the latter for part load operation), a turbocharger which provided peak boost pressure of 0.8 bar, an intercooler, double overhead camshafts (toothed chain-driven), variable intake and exhaust camshaft timing, variable exhaust valve lift, roller finger cam followers with hydraulic valve clearance compensation, four valves per cylinder, a variable intake manifold and a compression ratio of 9.6:1.

To minimise fuel consumption, the 2.0 TFSI engine had a ‘Start/Stop’ function which enabled the engine to shut down when the vehicle was stationary in traffic. Furthermore, the Audi TT required 95 RON premium unleaded petrol (PULP) and complied with Euro 6 emissions standards.

S-Tronic transmission

The S-Tronic transmission unit had two wet clutches, two input shafts and two outputs shafts. In this arrangement, Clutch 1 (C1) operated the odd gears (plus reverse), while Clutch 2 (C2) operated the even gears. When driving, the next-higher gear ratio could be engaged without actually being activated. To change gears, the clutch for the current gear would open and the other clutch (for the higher gear) would engage under electrohydraulic control. In addition to its fully automatic gearshifts, the driver could engage a manual shift mode and shift gears via the steering wheel paddles.

Haldex 5 all-wheel drive (‘quattro’)

The Audi 8S TT had a fifth-generation Haldex all-wheel drive system which utilised an electronically controlled and hydraulically actuated multi-plate clutch that was located in front of the rear axle differential (at the end of the prop shaft). If there was a loss of front-wheel traction, or such a loss was anticipated by on-board sensors, the clutch would engage to force the clutch plates together and transfer torque to the rear axle ‘in just a few milliseconds’ for a 50:50 front:rear torque split.

As a result of new software which determined the parameters for engagement of the multi-plate clutch, the all-wheel drive system also had three selectable modes:

• Efficiency: for maximum fuel efficiency, the rear axle could be decoupled such that the vehicle was front-wheel drive only. Nonetheless, all-wheel drive would still be activated before torque was required at all four wheels if a loss of traction was anticipated;
• Auto: the quattro system provided a 90:10 front:rear torque split; and,
• Dynamic: the multi-plate clutch would engage earlier and to a higher degree.

Body and roof

The body of the 8S TT Roadster, and related TTS Roadster, was underpinned by Volkswagen’s modular transverse matrix (MQB). As such, the 8S TT Roadster had:

• Ultra-high-strength, hot-shaped steel components which reinforced the front section and passenger compartment; and,
• Semi-finished aluminium in the form of cast nodes, extruded profiles and sheet metal for the passenger compartment, outer skin and attachment parts.

Compared to the 8S TT Coupe , the 8S TT Roadster had a modified aluminium A-pillar which contained a second steel pillar with an internal solid steel tube. Other design features included internal steel ribbing for the aluminium sills and V-shaped steel struts to reinforce the zones underneath the engine compartment, luggage compartment and to connect the axle carriers.

The electrically actuated fabric top – which had magnesium, aluminium, steel and plastic framework – weighed 39 kg (3 kg lighter than its predecessor), while improved insulation reduced interior noise by up to 6 dB depending on frequency. The soft-top was powered by two electric motors which enabled it to open and close in 10 seconds, and be operated at speeds of up to 50 km/h. Since the top folded into a ‘Z’ shape and rested upon an aluminium tray, it did not encroach upon the 280 litre boot.

Dimensions and weights

Compared to the Audi 8J TT Roadster which preceded it, the 8S TT Roadster was 21 mm shorter (at 4177 mm), 10 mm narrower (1832 mm), 3 mm lower (1355 mm) and had a 37 mm longer wheelbase (2505 mm). Furthermore, the 8S TT Roadster had a drag coefficient of 0.30 Cd. As a result of its aluminium and steel hybrid construction, the front-wheel drive 2.0 TFSI had a kerb weight of 1320 kg.

Suspension

The Audi 8S TT Roadster had MacPherson strut front suspension with lower wishbones, aluminium pivot bearings and an anti-roll bar. The independent, four-link rear suspension had a separate spring/shock absorber arrangement and a tubular anti-roll bar.

As an extra-cost option, the 8S TT Roadster was available with Audi’s third generation adaptive damper control system, Audi magnetic ride. With Audi magnetic ride, the dampers were filled with magnetorheological fluid and damper resistance could be varied by the application of a magnetic field to the fluid. Furthermore, Audi magnetic ride enabled the driver to select from comfort, auto or dynamic settings.

Steering

The Audi 8S TT Roadster had electromechanical, rack-and-pinion steering with a progressive steering ratio whereby the amount of steering wheel rotation required to turn the wheels decreased as steering lock increased.

Safety equipment

Standard safety equipment for the Audi 8S TT Roadster included dual front airbags, front seat-mounted side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with load limiters and pretensioners.

As standard, the TT Roadster was also fitted with ‘Attention Assist’ which monitored driver behaviour for signs of inattentiveness and would provide a warning tone and visual signal if detected.

Features: TT Roadster Sport

Standard features for the Audi TT Roadster Sport included 18-inch alloy wheels with 245/40 R18 tyres, a 100 watt sound system with eight speakers and a CD/DVD player, Audi’s MMI navigation plus system with voice control and live traffic updates, Bluetooth mobile phone connectivity and audio streaming, two SD card readers, climate control air conditioning, power adjustable sport front seats, Alcantara seat panels, cruise control, xenon headlights with LED daytime driving lights, automatic headlights, rain-sensing wipers, Audi parking system plus (front and rear parking sensors with reversing camera), a leather-wrapped steering wheel, split and folding rear seats, remote central locking with proximity key, power windows, power adjustable and heated door mirrors, tilt and telescopic steering wheel adjustment, push-button start, an auto-dimming rear view mirror, tyre pressure monitoring, a 12 volt power socket (luggage compartment), trip computer and an immobiliser.

Inside, the MMI (Multi-Media Interface) controls were combined with the instrument cluster in a 12.3-inch display (Audi’s ‘virtual cockpit’). For models with the S-Tronic transmission, steering wheel gearshift paddles were also fitted as standard.

Features: TT Roadster S line

The TT Roadster S line was further equipped with 19-inch five-arm-star contrasting grey alloy wheels, 155 watt Audi sound system with a five-channel amplifier and nine speakers (including two bass boxes), DAB+ digital radio, ‘S’ sport front seats with pneumatic bolster adjustment, LED headlights and LED tail-lights.

Visually, the S line could be identified by its body styling package which included unique front and rear bumpers, side sills, platinum grey rear diffuser, ‘S line’ logos (for the front wings, door sills, steering wheel and seats), matt brushed aluminium inlays, S line steering wheel with perforated leather grips, perforated leather gearshift knob and contrasting interior stitching.

Specifications

• Specifications: Audi 8S TT Coupe and TT Roadster (December 2016)

Review: Audi 8S.II TT Roadster (2018-on)

Overview

Commencing production in September 2018, the Audi 8S Series II (8S.II) TT Roadster will be released in Australia in the first quarter of 2019. The Audi 8S.II TT Roadster range will consist of 40 TFSI and 45 TFSI variants (see table below), and all petrol engines will be fitted with a particulate filter to reduce emissions.

Visually, the Audi 8S.II TT Roadster will be identifiable by its ‘more masculine, more progressive and even sportier’ appearance, with changes for the three-dimensional single-frame radiator grille, large side air inlets and horizontal rear lines. Furthermore, the fuel tank flap will no longer have a cap underneath such that the driver can insert the petrol pump nozzle directly into the opening.

The new optional ‘S line’ exterior package consists of full-length front splitter, vertical air inlets, a titanium black radiator grille, unique side sills with inserts, a wider rear diffuser and vertical air inlets (that have three horizontal fins) below the tail-lights.

Features

Further information regarding features for the Audi 8S.II TT Roadster will be available closer to launch.

Related links

• Audi Australia: Audi TT Roadster
• Wikipedia.org: Audi 8S TT