Compared to its M111 predecessor, the M271 engine had:
- Centrally-located spark plugs;
- A Lanchester balancer which eliminated second order inertial forces, though the 1.6-litre variant omitted the balancer for greater efficiency; and
- Forced induction with charge air cooling.
From 2003 to 2005, the M271 engine was available with direct petrol injection (‘CGI’) which operated at pressures from 50 to 120 bar. The direct injection engines had two separate intake ports, each of which had an adjustable swirl flap so that turbulence generated in the intake air enhanced the efficiency of the combustion process. The direct injection engines had Siemens SIM 4 LDE engine management.
M271 EVO
Available from September 2009, the M271 EVO engine had a turbocharger in place of the M271’s supercharger. Since the turbocharger did not require engine power to drive the compressor, the engine’s efficiency was improved. Other benefits included lower production costs, more compact packaging, an approximate 4 kg mass reduction and reduced noise and vibration characteristics. The M271 EVO engine was first offered in the E 250 CGI BlueEfficiency.
From 2010, M271 EVO engines with six-speed manual transmissions were available with an ECO start-stop function which enabled the engine to shut down when the vehicle was stationary in traffic.
While the M271 EVO engine was initially available with a five-speed automatic transmission, this was replaced by the seven-speed 7G-Tronic unit in mid-2011. However, the 7G-Tronic Plus transmission was introduced in September 2011 and included the ECO start-stop function.
The M271 engine was superseded by the M274 in 2011.
Engine | Code | Bore/stroke | Peak power | Peak torque | Years | Models |
---|---|---|---|---|---|---|
M271 E 16 ML | 271.911 | 82.0 x 75.6 | 95 kW at 5000 rpm | 220 Nm at 2500-3800 rpm | 2009-11 | CL203 CLC 160 BlueEfficiency |
M271 E 16 ML | 271.910 | 82.0 x 75.6 | 115 kW at 5200 rpm | 230 Nm at 3000-4500 rpm | 2008-10 | W204 C 180 Kompressor BlueEfficiency |
Engine | Code | Bore/stroke | Peak power | Peak torque | Years | Models |
---|---|---|---|---|---|---|
M271 E 18 ML red. | 271.921 | 82.0 x 85.0 | 90 kW at 5200 rpm | 190 Nm at 1500-4200 rpm | 2005-06 | CL203 C 160 |
M271 E 18 ML red. | 271.946 | 82.0 x 85.0 | 105 kW at 5200 rpm | 220 Nm at 2500-4200 rpm | 2002-08 | W203 C 180 Kompressor |
M271 E18 ML red. | 271.946 | 82.0 x 85.0 | 105 kW at 5200 rpm | 220 Nm at 2500-4200 rpm | 2008-11 | CL203 CLC 180 Kompressor |
M271 E 18 ML red. | 271.952 | 82.0 x 85.0 | 115 kW at 5200 rpm | 230 Nm at 2600-4600 rpm | 2007-08 | W204 C 180 Kompressor |
M271 E 18 ML | 271.951 | 82.0 x 85.0 | 115 kW at 5000 rpm | 240 Nm at 3000-400 rpm | 2008-17 | W906 Sprinter 216, 316, 516 |
M271 E 18 ML NGT | 271.951 NGT | 82.0 x 85.0 | 115 kW at 5000 rpm | 240 Nm at 3000-4000 rpm | 2008-17 | W906 Sprinter 316 NGT, NGT 516 |
M271 E 18 ML | 271.940 | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2002-08 | W203 C 200 Kompressor |
271.940 | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2004-07 | A209 CLK 200 Kompressor, C209 CLK 200 Kompressor |
|
M271 E 18 ML | 271.944 | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2004-08 | R171 SLK 200 Kompressor |
M271 E 18 ML | 271.941 | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2002-06 | W211 E 200 Kompressor |
M271 E 18 ML NGT | 271.941 NGT | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2007-08 | W211 E 200 NGT |
M271 E 18 ML | 271.950 | 82.0 x 85.0 | 135 kW at 5500 rpm | 250 Nm at 2800-5000 rpm | 2007-10 | W204 C 200 Kompressor |
M271 E 18 ML | 271.955 | 82.0 x 85.0 | 135 kW at 5500 rpm | 250 Nm at 2800-5000 rpm | 2008-11 | CL203 CLC 200 Kompressor |
271.955 | 82.0 x 85.0 | 135 kW at 5500 rpm | 250 Nm at 2800-5000 rpm | 2007-10 | A209 CLK 200 Kompressor, C209 CLK 200 Kompressor |
|
M271 E 18 ML | 271.954 | 82.0 x 85.0 | 135 kW at 5500 rpm | 250 Nm at 2800-5000 rpm | 2008-11 | R171 SLK 200 Kompressor |
M271 E 18 ML | 271.956 | 82.0 x 85.0 | 135 kW at 5500 rpm | 250 Nm at 2800-5000 rpm | 2006-09 | W211 E 200 Kompressor |
M271 E 18 ML NGT | 271.956 NGT | 82.0 x 85.0 | 120 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2006-09 | W211 E 200 NGT BlueEFFICIENCY |
M271 E 18 ML | 271.948 | 82.0 x 85.0 | 141 kW at 5800 rpm | 260 Nm at 3500-4000 rpm | 2002-05 | W203 C 230 Kompressor |
M271 E 18 ML NGT | 271.958 | 82.0 x 85.0 | 135 kW at 5500 rpm | 240 Nm at 3000-4000 rpm | 2011-13 | W212 E 200 NGT BlueEFFICIENCY |
Engine | Code | Bore/stroke | Peak power | Peak torque | Years | Models |
---|---|---|---|---|---|---|
M271 DE 18 ML | 271.942 | 82.0 x 85.0 | 125 kW at 5500 rpm | 250 Nm at 3500 rpm | 2003-05 | W203 C 200 CGI |
M271 DE 18 ML | 271.942 | 82.0 x 85.0 | 125 kW at 5500 rpm | 250 Nm at 3500 rpm | 2003-05 | A209/C209 CLK 200 CGI |
Engine | Code | Bore/stroke | Peak power | Peak torque | Years | Models |
---|---|---|---|---|---|---|
M271 DE 18 AL red. | N/A | 82.0 x 85.0 | 115 kW at 5000 rpm | 240 Nm at 1600-4200 rpm | 2009-12 | W204 C 180 BlueEfficiency |
M271 DE 18 AL | 271.820 | 82.0 x 85.0 | 135 kW at 5250 rpm | 270 Nm at 1800-4600 rpm | 2009-on | W204 C 200 BlueEfficiency |
M271 DE 18 AL | 271.820 | 82.0 x 85.0 | 135 kW at 5250 rpm | 270 Nm at 1800-4600 rpm | 2011-15 | R172 SLK 200 BlueEfficiency |
M271 DE 18 AL | 271.820 | 82.0 x 85.0 | 135 kW at 5250 rpm | 270 Nm at 1800-4600 rpm | 2009-13 | W212 E 200 BlueEfficiency |
M271 DE 18 AL | 271.820 | 82.0 x 85.0 | 135 kW at 5250 rpm | 270 Nm at 1800-4600 rpm | 2010-13 | A207/C207 E 200 BlueEfficiency |
M271 DE 18 AL | 271.860 | 82.0 x 85.0 | 150 kW at 5500 rpm | 310 Nm at 4300 rpm | 2009-13 | W204 C 250 BlueEfficiency |
M271 DE 18 AL | 271.860 | 82.0 x 85.0 | 150 kW at 5500 rpm | 310 Nm at 4300 rpm | 2011-15 | R172 SLK 250 BlueEfficiency |
M271 DE 18 AL | 271.860 | 82.0 x 85.0 | 150 kW at 5500 rpm | 310 Nm at 4300 rpm | 2009-13 | W212 E 250 BlueEfficiency |
M271 DE 18 AL | 271.860 | 82.0 x 85.0 | 150 kW at 5500 rpm | 310 Nm at 4300 rpm | 2009-13 | A207 E 250 BlueEfficiency, C207 E 250 BlueEfficiency |