Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals

Mercedes M271 Petrol Engine Manuals

The Mercedes-Benz M271 is a inline straight 4-cylinder petrol engine produced in two displacements of 1.6 L (1,597 cc) and 1.8 liter (1,796 cc) and was produced from 2002-on

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Download: MB E-Class W210 W211 Multi Engine Service Manual

Mercedes M111 M112 M113 M271 M272 Engine Service ManualMercedes E-Class Series W210 W211 2000-2006
Engines: M111 M112 M113 M271 M272
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Download: MB M271 Engine Introduction Into Service

Mercedes M271 Engine Introduction into Service Manual

Mercedes Benz M271 Engine Introduction
Overview Manual: Describes engine components, operation, specs
Variations: M271, KE18ML (271.9xx), DE18ML (271.9xx), KE16ML (271.952), DE18LA (M271Evo, 271.8xx)
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M271 Engine Technical Data

The M271 engine is a automobile piston engine family built in Untertürkheim, Germany, and used in the 2000s (decade). All M271. They include a cast aluminum engine block and DOHC cylinder heads with 4 valves per cylinder and variable valve timing with a coil-on-plug ignition system.

M271 KE/DE 18 1.8L Engine Common Issues

  • Power loss is one of the most common problems with the M271, which caused by soot on valve stems.
  • Engine noise during start-up is caused by an unreliable single-stand timing chain with stretched chain noise.

Mercedes Benz M271 Motor

Version Specifications and Applications

KE18ML (271.9XX)

The KE18ML is a 1.8 L (1,796 cc) version with bore and stroke of 82 mm × 85 mm (3.23 in × 3.35 in), and output ranges from 122 PS (90 kW; 120 hp) at 5200 rpm to 194 PS (143 kW; 191 hp) at 5800 rpm. It  is supercharged and inter-cooled using sequential fuel injection with fracture-split forged steel connecting rods. A version running on natural gas was introduced in the German market in 2002.

Applications

  • 2002 CLK-Class (W209) CLK 200 KOMPRESSOR
  • 2002 C-Class (W203) C 180 KOMPRESSOR, C 200 KOMPRESSOR, C 230 KOMPRESSOR
  • 2002 C-Class Sportcoupé CLC 180 KOMPRESSOR, CLC 200 KOMPRESSOR, CLC 230 KOMPRESSOR
  • 2002 E-Class (W211) E 200 KOMPRESSOR
  • 2004 E-Class (W211) E 200 NGT (bi-fuel - gasoline + natural gas)
  • 2004 SLK-Class (R171) SLK 200 KOMPRESSOR
  • 2007 C-Class (W204) C 180 KOMPRESSOR, C 200 KOMPRESSOR
  • 2008 CLC-Class CLC 180 KOMPRESSOR, CLC 200 KOMPRESSOR

DE18ML (271.9XX)

This engine has the same dimensions and most of the same features as the E18ML, but used CGI (Stratified Charged Gasoline Direct Injection) and has been produced since 2003 in only one version with an output of 170 PS (125 kW; 168 hp) at 5300 rpm. Production ceased in 2005.

Applications

  • 2003 C-Class Sportcoupé C 200 CGI
  • 2003 C-Class (W203) C 200 CGI
  • 2003 CLK-Class (W209) CLK 200 CGI

KE16ML (271.952)

The KE16 is a 1.6 L (1,597 cc) version introduced in 2008 with a bore and stroke of 82 mm × 75.6 mm (3.23 in × 2.98 in). It shares the same features with the KE18ML version including, supercharger and multi-point fuel injection with an output range from 129 PS (95 kW; 127 hp) at 5000 rpm to 156 PS (115 kW; 154 hp) at 5200 rpm.

Applications

  • 2008 CLC-Class CLC 160
    2008 C-Class (W204) C 180 KOMPRESSOR

DE18LA (M271Evo, 271.8XX)

This is the last version of M271 engine family and dimensions are the same as E18ML and DE18ML, but the supercharger has been replaced with a turbocharger, and like the DE18ML, it uses the CGI (Stratified Charged Gasoline Direct Injection) and has a output range from 156 PS (115 kW; 154 hp) at 5200 rpm to 204 PS (150 kW; 201 hp) at 5500 rpm.

Applications

  • 2009 C-Class (W204) C 180 CGI, C 200 CGI, C 250 CGI
  • 2009 E-Class (W212) E 200 CGI, E 250 CGI
  • 2010-2013 E-Class (C207) E200 BlueEfficiency
  • 2009-2011 E-Class (C207) E250 CGI
  • 2011-2015 SLK-Class (R172) SLK 200, SLK 250

M271.820

EVO modification with 184 hp and 199 lb-ft. of torque. Compression ratio is 9.3, (2009 - present day)

Applications

  • C 200 BlueEFFICIENCY
  • W204, SLK 200 BlueEFFICIENCY
  • R172, E 200 BlueEFFICIENCY
  • W212, E 200 Coupe BlueEFFICIENCY C207

M271.860

EVO modification with 202 hp and 228 lb-ft of torque, (2009 - present day)

Applications

  • C 250 BlueEFFICIENCY
  • W204, SLK 250 BlueEFFICIENCY
  • R172, E 250 BlueEFFICIENCY
  • W212, E 250 Coupe BlueEFFICIENCY C207

Mercedes M271 Engine

Common Characteristics

  • Configuration Straight-4
  • Block material Cast aluminum
  • Head material Aluminum
  • Valvetrain DOHC 4 valves per cylinder with VVT
    • Variable Valve Timing
  • Fuel system Sequential fuel injection
  • Direct injection
  • Cooling system Water cooled
  • Supercharger In some versions and intercooled
Mercedes M271 Engine Cutaway