Mercedes-Benz M271 engine


The Mercedes-Benz M271 engine is a straight-4 automobile piston engine family used in the 2000s.
All M271 engines are built in Untertürkheim, Germany. The family has a cast aluminium engine block and aluminium DOHC cylinder heads with 4 valves per cylinder and variable valve timing and a coil-on-plug ignition system.

KE18 ML (271.9XX)

The KE18 ML is a version. Bore and stroke is. Output ranges from at 5200 rpm to at 5800 rpm.
It uses sequential fuel injection, is supercharged and intercooled, and features fracture-split forged steel connecting rods.
A version running on natural gas was introduced in the German market in 2002.
Applications:

DE18 ML (271.942)

This engine had the same dimensions as E18 ML and almost the same features including a supercharger, but used CGI gasoline direct injection. It has been produced since 2003 in only one version, with an output of at 5300 rpm. The production ceased in 2005.
Applications:

KE16 ML (271.910)

The KE16 ML is a version introduced in 2008. Bore and stroke is. It shares the same features with the KE18ML version, like supercharger and multi-point fuel injection. Output ranges from at 5000 rpm to at 5200 rpm.
Applications:

DE18 LA (M271Evo, 271.8XX)

This is the last version of M271 engine family. Dimensions are the same as E18 ML and DE18 ML, but the supercharger has been replaced with a turbocharger; like the DE18 ML it uses the CGI gasoline direct injection. Output ranges from at 5200 rpm to at 5500 rpm.
Applications:

Other uses

The engine in 2.0-litre naturally aspirated form is used by German automotive company HWA Team as the basis for a Mercedes-Benz motor racing engine and has been the engine used widely in Formula 3 motor racing powering championship winning drivers across Europe and further afield.