The 2.7-liter 5-cylinder inline engine of the Mercedes OM612 was produced from 1999 to 2007 and installed in popular models of the company such as the W203, W210, W163, and Gelandewagen. There was also an AMG version of this diesel engine with a capacity of 3.0 liters and a power output of 230 hp. In the R5 engine lineup, there are also diesel engines: OM617, OM602, OM605, and OM647.
| Exact capacity | 2685 cm³ |
| Power system | Common Rail |
| Engine power | 156 - 170 HP |
| Torque | 330 - 400 nm |
| Engine block | cast iron R5 |
| Block head | aluminum 20v |
| Cylinder diameter | 88 mm |
| Piston stroke. | 88.3 mm |
| Compression ratio | 18 |
| Engine features | there is no |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | tak |
| What oils to use | 7.5 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 350 000 HP |
| City | 9.7 litry |
| Route | 5.1 litry |
| Mixed | 6.8 litry |
The weight of the OM612 engine according to the catalog is 215 kg. The engine number OM612 can be found on the cylinder block. One problem with 5-cylinder diesel engines of this series is increased wear of the camshafts. The timing chain does not last long either, its lifespan is approximately 200-250 thousand km. Electrical issues often occur with the wiring of the injectors and the boost pressure sensor. The injectors quickly get coked up if the heat-resistant washers are not replaced during their disassembly. All other failures of this engine are related to the Common Rail fuel system.
| C-Class W203 | 2000 - 2007 |
| CLK-Class C209 | 2002 - 2005 |
| E-Class W210 | 1999 - 2003 |
| ML-Class W163 | 1999 - 2005 |
| G-Class W463 | 2002 - 2006 |
| Sprinter W901 | 2000 - 2006 |
| Grand Cherokee 2 (WJ) | 2002 - 2004 |
2.0 liter engine Mercedes OM640 or A-Class 2.0 CDI was produced from 2004 to 2012 and was only mounted in the second generation of A-Class and similar compact van class B. This propulsion system essentially replaced the popular diesel engine OM668 with a capacity of 1.7 liters. The R4 series includes: OM615 OM601 OM604 OM611 OM646 OM651 OM654
The 2.0-liter diesel engine Mercedes OM 654 was introduced by the company only in 2016 and is characterized by an aluminum cylinder block with plasma-sprayed Nanoslide iron coating. There is a version of the transverse OM 654q layout as well as an updated modification OM 654M. The R4 series includes: OM616 OM601 OM604 OM611 OM640 OM646 OM651 OM668
Mercedes OM603 6-cylinder engines with a capacity of 3.0 and 3.5 liters were produced from 1984 to 1997 and installed in many popular models of the German company, such as W124, W126, and W140. There were three versions of this diesel engine available: one naturally aspirated and two with turbocharging. The R6 engine line also includes diesel units: OM606, OM613, OM648, and OM656.
The 3.0-liter inline 6-cylinder Mercedes OM606 engine was produced from 1993 to 2001 and was installed in popular models such as the E-Class, S-Class, and off-road vehicle Gelandewagen. This engine was available in two variants: the 300D with 136 hp and the 300TD with 177 hp. The inline 6-cylinder engines also include diesel engines: OM603, OM613, OM648, and OM656.
The 2.5-liter V6 engine Alfa Romeo AR67301 was produced at the factory in Arese from 1992 to 1997 and was only mounted in the sporty versions of the popular model 155 on the European market. The same engine was installed in the sedan 166, but received its own index AR66201. The Busso V6 engine series also includes: - AR34102 - AR32405 - AR16105.
1.5-liter Hyundai G4FL or Smartstream G 1.5 MPi engine has been produced since 2018 and installed in models intended for the Indian and Chinese markets, such as Kia Carens, Seltos, or Sonet. This power unit was planned to be produced in our country, but plans were later changed. Gamma line: G4FA, G4FC, G4FD, G4FG, G4FJ, G4FM, G4FP, and G4FT.