Mercedes-Benz R-Class (W251) R 320 CDI V6 (224 hp) 4MATIC G-TRONIC
Diesel engine with 224 hp (165 kW) and 376 lb-ft (510 Nm), built 2007–2009, station wagon body, all-wheel drive (4x4). It is the most powerful diesel version of the generation.
EnlargePower224 hp (165 kW)
Torque376 lb-ft (510 Nm)
0–62 mph8.7 s
Top speed138 mph (222 km/h)
FuelDiesel
Specifications
Engine
| Engine version | R 320 CDI V6 (224 hp) 4MATIC G-TRONIC |
|---|---|
| Engine code | OM 642.950 |
| Displacement | 3.0 L (2,987 cm³) |
| Cylinders | 6 |
| Cylinder layout | V-engine |
| Engine position | Front, Longitudinal |
| Valves per cylinder | 4 |
| Fuel system | Diesel common rail |
| Compression ratio | 16-5 |
| Bore | 83 mm |
| Stroke | 92 mm |
| Engine oil capacity | 9.0 qt (8.5 l) |
| Engine systems | Particulate filter |
Performance
| Power | 224 hp (165 kW) |
|---|---|
| Torque | 376 lb-ft (510 Nm) |
| 0–62 mph (0–100 km/h) | 8.7 s |
| Top speed | 138 mph (222 km/h) |
Fuel economy and emissions
| Fuel | Diesel |
|---|---|
| Highway | 25 mpg (9.3 l/100 km) |
| CO₂ emissions | 396 g/mi (246 g/km) |
| Emission standard | Euro 5 |
| Fuel tank | 21.1 gal (80 l) |
Body, dimensions and weight
| Body style | Station wagon |
|---|---|
| Doors | 5-7 |
| Length | 193.8 in (4,922 mm) |
| Width | 75.7 in (1,922 mm) |
| Height | 65.3 in (1,659 mm) |
| Curb weight | 4,960 lb (2,250 kg) |
| Gross vehicle weight | 6,261 lb (2,840 kg) |
| Cargo volume | 19.4 cu ft (550 l) |
Drivetrain and chassis
| Drive | All-wheel drive (4x4) |
|---|---|
| Steering | Hydraulic power steering |
| Front suspension | Double wishbone |
| Rear suspension | Independent multi-link, coil spring, stabilizer bar |
| Tires | 235/65 R17 |
| Wheels | 7.5J x 17 |
| Driver assistance | ABS (Anti-lock braking system) |
What to check on a Mercedes-Benz R-Class with this engine
- On a diesel, check the particulate filter (DPF), the injectors and the dual-mass flywheel: they are the expensive repairs.
- All-wheel drive needs fresh fluid in the differentials and the coupling: ask for the service records.
- Compare the odometer with the readings in the service records and in the VIN history report: a big gap means the mileage was rolled back.
Other Mercedes-Benz R-Class (W251) engines
| Engine | Fuel | Power | Combined |
|---|---|---|---|
| R 350 V6 (272 hp) 4MATIC G-TRONIC | Gasoline | 272 hp (200 kW) | |
| R 500 V6 (306 hp) 4MATIC G-TRONIC | Gasoline | 306 hp (225 kW) | |
| R 280 CDI V6 (190 hp) 4MATIC G-TRONIC | Diesel | 190 hp (140 kW) | |
| R 280 CDI V6 (190 hp) G-TRONIC | Diesel | 190 hp (140 kW) | |
| R 280 V6 (231 hp) G-TRONIC | Gasoline | 231 hp (170 kW) | |
| R 350 V6 (272 hp) G-TRONIC | Gasoline | 272 hp (200 kW) | |
| R 300 CDI V6 (190 hp) 4MATIC G-TRONIC | Diesel | 190 hp (140 kW) | |
| R 300 CDI V6 (190 hp) G-TRONIC | Diesel | 190 hp (140 kW) | |
| R 300 CDI V6 BlueEFFICIENCY (190 hp) G-TRONIC | Diesel | 190 hp (140 kW) | |
| R 300 V6 (231 hp) G-TRONIC | Gasoline | 231 hp (170 kW) | |
| R 350 CDI V6 (224 hp) 4MATIC G-TRONIC | Diesel | 224 hp (165 kW) |