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 |
The 2.2-liter diesel engine Mercedes OM 646 was produced from 2002 to 2010 and installed in the C-Class, CLK-Class, E-Class models, as well as in Vito and Sprinter minibuses. There was a version of this engine with a transverse arrangement, the OM 644, for the Chrysler PT Cruiser. The R4 engine lineup includes: OM616 OM601 OM604 OM611 OM640 OM651 OM654 OM668
The range of Mercedes OM651 diesel engines with a capacity of 1.8 and 2.2 liters has been produced since 2008 and installed in many modern models of the German company, including commercial vehicles. This powertrain is available in a huge number of different versions and modifications. The R4 family includes: OM616 OM601 OM604 OM611 OM640 OM646 OM654 OM668
The 2.5-liter, 5-cylinder inline engine Mercedes OM 605 was produced from 1993 to 2001 and was installed in several popular models of the company, such as the W124, W202, W210. This powertrain was offered in a naturally aspirated version with 113 HP and a turbocharged version with 150 HP. The inline R5 engine lineup also includes diesel engines: OM617, OM602, OM612, and OM647.
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 2.0-liter engine 937A1000 or Alfa Romeo 156 2.0 JTS was produced from 2002 to 2010 and installed in popular models of the brand, such as 156, GT, GTV, and the similar Spider. This engine is actually a modification of the Twin Spark engine with direct fuel injection. The JTS engine series also includes: 939A5000 and 939A000.
The 2.1-liter Jaguar AJ20 petrol engine was produced by the company from 2001 to 2008 and was installed in the smallest model, the X-Type, but it was only available in certain markets. This is the only engine in the series that does not have an equivalent in the Duratec V6 family. The AJ-V6 series also includes the engines: AJ25 and AJ30.