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 M270 engine

Mercedes M270 gasoline engines with a capacity of 1.6 and 2.0 liters were produced from 2011 to 2019 and were installed in models with transversely mounted engines, such as the A-Class and B-Class. Similar power units for vehicles with longitudinally mounted engines are designated M274. R4 Series: M102, M111, M166, M260, M264, M266, M271, and M282.

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.

Mercedes M276 engine

The V6 engine series with a displacement of 3.0 and 3.5 liters, the Mercedes M276, was introduced in 2010 and has since been installed in most of the company's modern models, such as the W205 and W222. There are three variants of this engine: naturally aspirated and two with turbocharging. The V6 engine line also includes the engines: M112 and M272.

Mercedes M273 engine

The Mercedes M273 V8 engine series with a capacity of 4.7 and 5.5 liters was produced from 2005 to 2015 and installed in many expensive models of the German company, such as the W211, W221, and X164. These engines have gained a reputation as some of the most problematic engines in the company. The V8 engine lineup also includes the M119, M113, M157, and M278 engines.

Honda B20b engine

The 2.0-liter Honda B20B engine was produced by the Japanese corporation from 1995 to 2002 and is mainly known for being used in the first generation of the popular CR-V crossover on our market. The B20B engine existed in two versions, which only differed in power output. The B-series also includes the following engines: B16A, B16B, B18B, and B18C.

Audi Adr engine

The 1.8-liter petrol engine Audi 1.8 ADR was produced by the company from 1994 to 2000 and was installed in the most popular models of the company, such as A4, A6, or the fifth generation Passat. This powertrain did not differ significantly from its related sibling with the ARG index. The EA827-1.8 engine line includes: PF, RP, AAM, ABS, JN, ADZ, AGN, and ARG.