Comparison Mercedes-Benz SLR McLaren (C199) Coupe SLR 722 (650 Hp) & Mercedes-Benz R-class (W251) R 300 V6 (231 Hp) G-TRONIC
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| Brand: | Mercedes-Benz | Mercedes-Benz |
| Model: | SLR McLaren | R-class |
| Generation: | SLR McLaren (C199) Coupe | R-class (W251) |
| Engine / modification: | SLR 722 (650 Hp) | R 300 V6 (231 Hp) G-TRONIC |
| Production start: | 2003 year | 2009 year |
| Production end: | 2009 year | 2014 year |
| Coupe type: | Coupe | Combi |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 20.9 l/100 km | 15.2-15.4 l/100 km |
| Fuel consumption / economy - extra urban: | 10.8 l/100 km | 8.8-9.0 l/100 km |
| Fuel consumption / economy - combined: | 14.5 l/100 km | 11.1-11.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 97 l | 80 l |
| Emission standard: | Euro 4 | Euro 5 |
| CO2 emissions: | 260 g/km | |
| Power: | 650 hp | 231 hp |
| Max power in: | 6500 rpm. | 6000 rpm. |
| Maximum speed: | 337 km/h | 222 km/h |
| Acceleration from 0 to 100 km/h: | 3.6 sec | 9.7 sec |
| Torque: | 820 Nm @ 4000 rpm. | 300 Nm @ 2500-5000 rpm. |
| Model Engine: | M 272.945 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 5439 cm3 | 2996 cm3 |
| Engine oil capacity: | 8 l | |
| Coolant: | 10.1-13 l | |
| Fuel System: | Multi-point injection | Multi-point injection |
| Aspiration / Turbine: | Mechanical supercharging (Compressor) | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 3 | |
| Compression ratio: | 8.8 | 11.3 |
| Piston Stroke: | 92 mm | |
| Cylinder Bore: | 97 mm | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 5 | 7G-TRONIC |
| Length: | 4656 mm | 4922 mm |
| Width: | 1908 mm | 1922 mm |
| Height: | 1261 mm | 1674 mm |
| Wheelbase: | 2700 mm | 2980 mm |
| Front track: | 1638 mm | 1661 mm |
| Rear (Back) track: | 1569 mm | 1651 mm |
| Minimum volume of Luggage (trunk): | 272 l | 550 l |
| Maximum amount of Luggage (trunk): | 1950 l | |
| Front suspension: | The depreciated rack | Double wishbone |
| Rear suspension: | The depreciated rack | Independent, spring multi-link with stabilizer |
| Max weight: | 1935 kg | 2790 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 1768 kg | 2130 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.8 m | |
| Permitted trailer load with brakes (12%): | 2100 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 245/40 ZR18; 295/35 ZR18 | 255/55 R18 |
| Wheel rims size: | 9J x 18; 11.5J x 18 | R18 |