The family of six-cylinder engines Mercedes M104 was produced from 1989 to 1998 in three versions: E28 with a capacity of 2.8 liters, E30 with a capacity of 3.0 liters, and E32 with a capacity of 3.2 liters. There were also powerful AMG versions labeled E34 and E36 with capacities of 3.4 and 3.6 liters respectively. The R6 engine lineup also includes units: M103 and M256.
| Exact capacity | 2799 cm³ |
| Power system | injector |
| Engine power | 193 - 197 HP |
| Torque | 265 - 270 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 24v |
| Cylinder diameter | 89.9 mm |
| Piston stroke. | 73.5 mm |
| Compression ratio | 9.2 - 10 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | at the inlet |
| Turbocharging | there is no |
| What oils to use | 7.0 liters 5W-40 |
| Fuel type | 92 |
| Environmental class | EURO 1/2 |
| Approximate life expectancy | 500 000 HP |
| Exact capacity | 2960 cm³ |
| Power system | injector |
| Engine power | 220 - 230 HP |
| Torque | 265 - 270 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 24v |
| Cylinder diameter | 88.5 mm |
| Piston stroke. | 80.2 mm |
| Compression ratio | 10 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | at the inlet |
| Turbocharging | there is no |
| What oils to use | 7.0 liters 5W-40 |
| Fuel type | 92 |
| Environmental class | EURO 1/2 |
| Approximate life expectancy | 500 000 HP |
| Exact capacity | 3199 cm³ |
| Power system | injector |
| Engine power | 220 - 230 HP |
| Torque | 310 - 315 nm |
| Engine block | cast iron R6 |
| Block head | aluminum 24v |
| Cylinder diameter | 89.9 mm |
| Piston stroke. | 84 mm |
| Compression ratio | 9.2 - 10 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | at the inlet |
| Turbocharging | there is no |
| What oils to use | 7.0 liters 5W-40 |
| Fuel type | 92 |
| Environmental class | EURO 1/2 |
| Approximate life expectancy | 500 000 HP |
| City | 14.7 litry |
| Route | 8.2 litry |
| Mixed | 11.0 litry |
The weight of the M104 engine according to the catalog is 195 kg. The engine number for the M104 can be found on the cylinder block. The main problem with power units of this series is numerous oil leaks. The gaskets that often leak are the "P-shaped" gasket, cylinder head gasket (ГБЦ), and the heat exchanger for the oil filter. The fan viscous coupling frequently fails, which is highly dangerous for the engine. This engine is very susceptible to overheating and can quickly lead to cylinder head damage. The engine wiring under the hood and ignition coils will also cause you many troubles.
| C-Class W202 | 1993 - 1998 |
| E-Class W124 | 1990 - 1997 |
| E-Class W210 | 1995 - 1998 |
| G-Class W463 | 1993 - 1997 |
| S-Class W140 | 1991 - 1998 |
| SL-Class R129 | 1989 - 1998 |
| Chairman 1 (H) | 1997 - 2014 |
| Chairman 2 (W) | 2008 - 2017 |
| Korando 2 (KJ) | 1996 - 2006 |
| Musso 1 (FJ) | 1993 - 2005 |
| Rexton 1 (RJ) | 2001 - 2017 |
4-cylinder engines Mercedes M111 with a displacement ranging from 1.8 to 2.3 liters were produced from 1992 to 2000 and were installed in models W202, W208, W124, W210, as well as in SsangYong vehicles under the designations G20D or G23D. There were also versions with a supercharger and improved variants marked as EVO. R4 Series: M102, M166, M260, M264, M266, M270, M271, M274 and M282.
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.
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.
The 1.4-liter turbocharged petrol engine Mercedes M282 has been produced by the company since 2018 and is practically installed in all front-wheel drive models: A-Class, B-Class, CLA, GLA, and GLB. This engine was developed in collaboration with the Renault group and is also known under the index H5Ht. R4 series: M102, M111, M166, M260, M264, M266, M270, M271, and M274.
The 2.4-liter engine 839A6000 or Alfa Romeo 166 2.4 JTD was produced from 2000 to 2002 and installed in popular models of the group with indexes 156 and 166, as well as Lancia Lybra. This unit is equipped with a SOHC cylinder head with 10 valves without hydraulic compensators. Multijet I series: 199A2000 199A3000 186A9000 192A8000 937A5000 939A3000
The 2.0-liter Rover 20K4N engine was produced at the factory in the United Kingdom from 1998 to 2004 and was installed in the most popular models of the company with indexes 45 and 75. Unlike its older brother, this engine was offered only in one version with a power of 150 horsepower. The KV6 series includes the 25K4N engine.