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.
| Typ | row |
| Number of cylinders | 5 |
| number of valves | 10 |
| Exact capacity | 3005 cm³ |
| Cylinder diameter | 91 mm |
| Piston stroke. | 92.4 mm |
| Power system | swirl chamber |
| Power | 80 HP |
| Torque | 172 nm |
| Compression ratio | 21.0 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Typ | row |
| Number of cylinders | 5 |
| number of valves | 10 |
| Exact capacity | 2998 cm³ |
| Cylinder diameter | 90.9 mm |
| Piston stroke. | 92.4 mm |
| Power system | swirl chamber |
| Power | 88 HP |
| Torque | 172 nm |
| Compression ratio | 21.5 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Typ | row |
| Number of cylinders | 5 |
| number of valves | 10 |
| Exact capacity | 3005 cm³ |
| Cylinder diameter | 91 mm |
| Piston stroke. | 92.4 mm |
| Power system | swirl chamber |
| Power | 111 HP |
| Torque | 228 nm |
| Compression ratio | 21.5 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Typ | row |
| Number of cylinders | 5 |
| number of valves | 10 |
| Exact capacity | 2998 cm³ |
| Cylinder diameter | 90.9 mm |
| Piston stroke. | 92.4 mm |
| Power system | swirl chamber |
| Power | 121 HP |
| Torque | 230 nm |
| Compression ratio | 21.5 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| Typ | row |
| Number of cylinders | 5 |
| number of valves | 10 |
| Exact capacity | 2998 cm³ |
| Cylinder diameter | 90.9 mm |
| Piston stroke. | 92.4 mm |
| Power system | swirl chamber |
| Power | 125 HP |
| Torque | 250 nm |
| Compression ratio | 21.5 |
| Fuel type | diesel |
| Environmental class | EURO 0 |
| City | 11.2 litry |
| Route | 8.7 litry |
| Mixed | 9.9 litry |
The weight of the OM617 engine according to the catalog is 265 kg. The engine number is located at the junction of the block and the cylinder head. In the early years, diesel engines before 1979 often experienced cracks in the block around the fifth cylinder and crankshaft failure. There was a design miscalculation that was later corrected. The turbocharger in this engine does not have a long lifespan and cannot withstand immediate shutdown after long drives at high speeds. It is advisable to install a turbo timer. The timing chain in this engine is equipped with a very powerful but not the most durable double-row timing chain. Approximately every 200-250 thousand km, it needs to be replaced along with the tensioners and sprockets. Other issues reported by owners of these diesel engines include very noisy operation, strong vibrations, and frequent oil leaks, especially through the rear crankshaft seal, which tends to wear out. It is also worth noting that the fuel priming pump is not very reliable and often leaks.
| E-Class W114 | 1974 - 1976 |
| E-Class W123 | 1976 - 1986 |
| S-Class W116 | 1977 - 1980 |
| S-Class W126 | 1979 - 1985 |
| G-Class W460 | 1979 - 1990 |
| T1-Series W601 | 1981 - 1988 |
The Mercedes OM 604 diesel engine series with a displacement of 2.0 and 2.2 liters was produced from 1993 to 1999 and installed in two models of the company: the C-Class (W202) or E-Class (W210). A modified version of the 2.2-liter diesel engine with a power output of 75 HP was offered for taxi services. The inline-four engines include: OM615 OM616 OM601 OM611 OM640 OM646 OM651 OM668
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 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 Mercedes OM 602 Diesel engine series with a capacity of 2.5 and 2.9 liters was produced from 1985 to 2001 and installed in many popular models of the company, such as W124, W201, W210, or W463. In addition to versions with pre-chamber ignition, a modification with direct fuel injection was also offered. The R5 engine line also includes Diesel engines: OM617, OM605, OM612, and OM647.
The 3.0-liter engine Hyundai D6JA or Genesis 3.0 CRDi is produced by the company since 2020 and currently only installed in one model, the luxury crossover GV80 by Genesis. This engine is the first six-cylinder inline diesel engine from the Korean company. In the T family, there is only one diesel engine available.
The 3.0-liter Renault and Nissan V9X or 3.0 dCi diesel engine was installed from 2008 to 2015 and used in models such as Laguna, Pathfinder, Navara, and Infinity crossover cars. This diesel engine has gained a controversial reputation in our market due to its very expensive repairs. Currently, there is only one engine in the V-series engine lineup.