The 4.0-liter diesel engine of Mercedes OM629 was produced by the company from 2005 to 2010 and was only installed in the largest and most expensive models of the company, such as W211, W221, and X164. The engine was offered in one version, DE 40 LA, but with different indices: 420 CDI and 450 CDI. The V8 series also includes: OM628.
| Exact capacity | 3996 cm³ |
| Power system | Common Rail |
| Engine power | 306 - 320 HP |
| Torque | 700 - 730 nm |
| Engine block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder diameter | 86 mm |
| Piston stroke. | 86 mm |
| Compression ratio | 17.0 |
| Engine features | intercooler |
| Hydraulic compensator. | tak |
| Timing drive | chain (double) |
| Timing phase adjuster | there is no |
| Turbocharging | two GTB1752VK |
| What oils to use | 10.5 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 4 |
| Approximate life expectancy | 320 000 HP |
| City | 15.6 litry |
| Route | 9.2 litry |
| Mixed | 11.6 litry |
The weight of the OM629 engine according to the catalog is 280 kg. The number of the OM629 engine is located at the junction of the block and the gearbox. This diesel engine has become more reliable than its predecessor, but still causes a lot of trouble. The main problems are related to leaking fuel injectors and failures of the high-pressure fuel pump. This unit quickly becomes clogged, especially when it comes to the EGR system. The engine is also very sensitive to overheating, which can lead to scuffing and cracks. At a mileage of 200,000 km, the turbocharger often fails and the timing chain stretches.
| E-Class W211 | 2006 - 2009 |
| S-Class W221 | 2005 - 2010 |
| GL-Class X164 | 2006 - 2010 |
| ML-Class W164 | 2007 - 2010 |
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 3.0-liter, inline, five-cylinder Mercedes OM 617 engine was produced from 1974 to 1990 and installed in popular models such as the W123, W126, and the off-road vehicle Geländewagen. This diesel engine was continuously modernized, so there are several versions of it. The R5 engine lineup also includes the following diesel units: OM602, OM605, OM612, and OM647.
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.
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.
1.6-liter engine AR32104 or Alfa Romeo 156 1.6 TS was produced from 2000 to 2010 and installed in two of the group's most popular models at that time, with the indexes 147 and 156. This engine did not have the Variable Length Intake Manifold (VLIM) system, which is used in larger engines in the series. The Twin Spark line includes: AR32201, AR32301, and AR32310.
The 3.8-liter gasoline engine Hyundai-Kia G6DN or 3.8 GDi has been produced since 2018 and is currently only installed in two similar crossovers - Hyundai Palisade and Kia Telluride. The engine operates in the economical Atkinson cycle, which is why it has high compression ratios. Lambda Line: G6DC G6DE G6DG G6DJ G6DH G6DK G6DP G6DS G6DU