The 2.2-liter inline diesel engine from Mercedes, model OM 611, was produced from 1997 to 2006 and used in both passenger cars, such as W202 or W210, and in Sprinter-type minibusses. There were two versions of the crankshaft, so some versions had different displacement. The R4 engines include: OM615 OM616 OM601 OM604 OM640 OM646 OM651 OM668
| Typ | row |
| Number of cylinders | 4 |
| number of valves | 16 |
| Exact capacity | 2151 / 2148 cm³ |
| Cylinder diameter | 88 mm |
| Piston stroke. | 88.4 / 88.3 mm |
| Power system | Common Rail |
| Power | 82 - 115 HP |
| Torque | 200 - 250 nm |
| Compression ratio | 18.0 - 19.0 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| Typ | row |
| Number of cylinders | 4 |
| number of valves | 16 |
| Exact capacity | 2151 / 2148 cm³ |
| Cylinder diameter | 88 mm |
| Piston stroke. | 88.4 / 88.3 mm |
| Power system | Common Rail |
| Power | 125 - 143 HP |
| Torque | 300 - 315 nm |
| Compression ratio | 18.0 - 19.0 |
| Fuel type | diesel |
| Environmental class | EURO 3/4 |
| City | 8.5 litry |
| Route | 4.8 litry |
| Mixed | 6.2 litry |
The weight of the OM611 engine according to the catalog is 190 kg. The engine number of the OM611 is located at the junction of the block with the gearbox. The most well-known problem of this unit is the burning out of the fireproof washers under the injectors. It is advisable to change them every 60,000 km, as the dismantling in neglected cases is expensive. The intake manifold here is equipped with plastic dampers, which simply jam and fall off, and then lubrication and soot start to come out through the holes of their axes. On minibuses with this engine, there may be a rotation of the inserts or crankshaft failure due to a drop in oil pressure, and many install an oil pump with a pair of gears from the OM612. Other problems that may arise are fuel leaks from the injection pump, EGR sticking, pressure regulator failure, and don't forget to fill the fuel filter when replacing it to prevent air from entering the system.
| C-Class W202 | 1997 - 2001 |
| C-Class W203 | 2000 - 2003 |
| C-Class CL 203 | 2000 - 2004 |
| E-Class W210 | 1997 - 2002 |
| V-Class W 638 | 1999 - 2003 |
| Sprinter W901 | 2000 - 2006 |
2.0 and 2.2-liter Mercedes OM 615 diesel engine was produced from 1968 to 1986 and installed in passenger cars such as the W115 and W123 models, as well as in microbuses like the N1300 or MB100. This engine served as the basis for the entire series of popular power units in our market. The R4 family includes: OM616 OM601 OM604 OM611 OM640 OM646 OM651 OM668
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
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 2.7-liter 5-cylinder inline engine Mercedes OM647 was produced from 2002 to 2005 and installed in the E-Class model with the W211 body, only in the pre-facelift version. This diesel engine is rarely found in our country and represents a true exclusivity. The R5 engine line also includes the following diesel engines: OM617, OM602, OM605, and OM612.
The 3.0-liter gasoline engine V6 Hyundai G6AT was produced by the company from 1990 to 2003 and installed in popular models of the corporation, such as the Sonata sedan and the Galloper SUV. This power unit was a design clone of the well-known Mitsubishi engine 6G72. The Sigma family also included the following engines: G6CT, G6AU, G6CU, and G6AV.
The 1.8-liter Hyundai G4CM engine was produced from 1988 to 1998 under a Mitsubishi license. It was structurally a copy of the popular Japanese engine, designated as 4G62. This SOHC engine is primarily known as the basic power unit for Sonata Y2 and Y3 models. The Sirius engine lineup includes: G4CR, G4CN, G4JN, G4JP, G4CP, G4CS, and G4JS.