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
| Exact capacity | 1991 cm³ |
| Power system | Common Rail |
| Engine power | 82 HP |
| Torque | 180 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder diameter | 83 mm |
| Piston stroke. | 92 mm |
| Compression ratio | 18 |
| Engine features | EGR |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | IHI VV16 |
| What oils to use | 5.8 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 290 000 HP |
| Exact capacity | 1991 cm³ |
| Power system | Common Rail |
| Engine power | 109 HP |
| Torque | 250 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder diameter | 83 mm |
| Piston stroke. | 92 mm |
| Compression ratio | 18 |
| Engine features | EGR |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | IHI VV16 |
| What oils to use | 5.8 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 280 000 HP |
| Exact capacity | 1991 cm³ |
| Power system | Common Rail |
| Engine power | 136 - 140 HP |
| Torque | 300 nm |
| Engine block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder diameter | 83 mm |
| Piston stroke. | 92 mm |
| Compression ratio | 18 |
| Engine features | EGR |
| Hydraulic compensator. | tak |
| Timing drive | chain |
| Timing phase adjuster | there is no |
| Turbocharging | BorgWarner BV43 |
| What oils to use | 5.8 liters 5W-30 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| Approximate life expectancy | 270 000 HP |
| City | 5.4 litry |
| Route | 3.9 litry |
| Mixed | 4.5 litry |
The weight of the OM640 engine according to the catalog is 160 kg. The OM640 engine number is located at the joint of the block and the oil pan. This is a very reliable diesel engine with Common Rail Bosch and electromagnetic injectors. The main problems are caused by EGR valve or dosing flap contamination. If you have starting issues, check the fuel pressure control valve on the rail. The generator, thermostat, and boost pressure sensor have a relatively low lifespan. It is worth considering that for many tasks, the motor needs to be lowered together with the subframe.
| A-Class W169 | 2004 - 2012 |
| B-Class W245 | 2005 - 2011 |
The Mercedes OM 601 diesel engine series, with a capacity ranging from 2.0 to 2.3 liters, was produced from 1983 to 2000 and installed in both passenger cars, such as the W201 and W202 models, as well as in commercial microbuses. In total, there were three naturally aspirated versions of this engine and one with turbocharging. The R4 series includes: OM615 OM604 OM611 OM640 OM646 OM651 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.
The 2.8-liter diesel engine Isuzu 4JB1 was produced at the Japanese factory from 1988 to 1998 and installed in popular models such as Trooper, Wizard, and Faster pickup by the corporation. Currently, many Chinese companies have mastered the production of clones of this engine. The J-engine line also includes diesel units: 4JG2, 4JJ1, 4JJ3, and 4JX1.
The 2.5-liter Subaru FB25D engine has been produced at the Japanese plant of the corporation since 2018 and is practically used in all modern models: Forester, Legacy, Outback, and Impreza. Compared to the previous model, this engine differs in the presence of direct fuel injection. The FB line also includes other engines: FB16B, FB16F, FB20B, FB20D, FB20X, and FB25B.