Mercedes M256 engine

The 3.0-liter inline 6-cylinder engine of the Mercedes M256 has been installed by the company since 2017 and used in their most powerful and expensive models, such as the S-Class, GLS-Class, and AMG GT. There is a version of this engine with a single turbocharger and an additional electric compressor. The R6 engine lineup also includes the M103 and M104 engines.

Technical data of Mercedes M256 3.0-liter engine. M 256 E30 DEH LA GR

Modification with one turbocharger M 256 E30 DEH LA GR
Exact capacity2999 cm³
Power systemdirect injection
Engine power367 HP
Torque500 nm
Engine blockaluminum R6
Block headaluminum 24v
Cylinder diameter83 mm
Piston stroke.92.4 mm
Compression ratio10.5
Engine featuresISG 48V
Hydraulic compensator. tak
Timing drivechain
Timing phase adjusterCamtronic
TurbochargingBorgWarner B03G
What oils to use8.5 liters 5W-30
Fuel type98
Environmental classEURO 6
Approximate life expectancy250 000 HP
Version with turbine and compressor M 256 E30 DEH LA G
Exact capacity2999 cm³
Power systemdirect injection
Engine power435 HP
Torque520 nm
Engine blockaluminum R6
Block headaluminum 24v
Cylinder diameter83 mm
Piston stroke.92.4 mm
Compression ratio10.5
Engine featuresISG 48V
Hydraulic compensator. tak
Timing drivechain
Timing phase adjusterCamtronic
TurbochargingBorgWarner B03G + eZV
What oils to use8.5 liters 5W-30
Fuel type98
Environmental classEURO 6
Approximate life expectancy240 000 HP

Fuel consumption Mercedes M256 engine

Using the example of the 2020 Mercedes-Benz GLS 450 with an automatic transmission:
City13.7 litry
Route8.2 litry
Mixed10.1 litry

Engine Overview and Common Failures

This power unit recently appeared and there is no data on its malfunctions yet. So far, no design flaws have been noted on relevant forums. Failures of Camtronic phase regulators have occurred on other engines in the modular series. Like all direct injection engines, this one suffers from carbon deposits on the intake valves. It is also worth noting the presence of an atypical diesel particulate filter for gasoline engines.

Engine Mercedes M256

Mercedes
AMG GT X2902018 - CE
CLS-Class C2572018 - CE
GLE-Class W1872018 - CE
GLS-Class X1672019 - CE
E-Class W2132018 - CE
E-Class C2382018 - CE
S-Class W2222017 - 2020
S-Class W2232020 - CE

Engines from the same line as Mercedes M256 engine

See Also

Mercedes M254 Engine

Mercedes M254 engines with capacities of 1.5 and 2.0 liters were introduced for the first time in 2020 and are characterized by plasma-sprayed iron with a Nanoslide coating and an integrated starter-generator (ISG). Currently, these power units are only installed in the fifth generation of the popular C-Class model. R4 series: M166, M260, M264, M266, M270, M271, M274, and M282.

Mercedes M271 engine

4-cylinder engines of Mercedes, with a capacity ranging from 1.6 to 1.8 liters, designated as M271, were produced from 2002 to 2015 and were installed in all the most popular models of their time, such as W203, W204, and W212. Upgraded engines from the M271 family with the EVO index were introduced in 2009. R4 series: M102, M111, M166, M260, M264, M266, M270, M274, and M282.

Mercedes M113 engine

The V8 engine series Mercedes M113 with a capacity of 4.3 and 5.0 liters was produced from 1997 to 2008 and installed in the largest and most expensive cars of the company, such as models W211, W219, W220, and W251. There was also a more powerful version of the engine with a capacity of 5.4 liters for AMG models. The V8 engine lineup also includes: M119, M157, M273, and M278.

Mercedes M278 engine

The 4.6-liter V8 engine from Mercedes, the M278, with dual turbocharging, was introduced in 2010 as a replacement for the well-known M273 engine, which was installed in popular E-Class, S-Class, and GL models. The DE 46 power unit is available in only one capacity, but in various power variants. The V8 engine lineup also includes the following units: M119, M113, M157, and M273.

VW BLF engine

The 1.6-liter Volkswagen BLF 1.6 FSI engine was produced by the company from 2004 to 2008 and installed in several popular models such as the Golf 5, Jetta 5, Touran, and Passat [B6]. This fuel-injected engine is often found under the hood of the Skoda Octavia as well. The EA111-FSI series includes the following engines: ARR, BKG, BAD, and BAG.

Peugeot Dv6fdted Engine

The 1.6-liter diesel engine Peugeot DV6FDTED or DV6FD was introduced in 2014 and is currently installed in practically all of the wide range of models from the French conglomerate. For commercial transport, there is a version with reduced power of 95 HP and 210 Nm. Other DV6 diesel engines include: DV6TED4 DV6A DV6B DV6C DV6D DV6E DV6FC DV6FE