Comparison Mercedes-Benz R-class (W251) R 350 CDI 4MATIC (265 Hp) & Audi A4 (B8 8K, facelift 2011) 3.0 TDI V6 (204 Hp)
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| Brand: | Mercedes-Benz | Audi |
| Model: | R-class | A4 |
| Generation: | R-class (W251) | A4 (B8 8K, facelift 2011) |
| Engine / modification: | R 350 CDI 4MATIC (265 Hp) | 3.0 TDI V6 (204 Hp) |
| Production start: | 2010 year | 2011 year |
| Production end: | 2012 year | 2015 year |
| Coupe type: | Combi | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 11.0 l/100 km | 6.4 l/100 km |
| Fuel consumption / economy - extra urban: | 7.0 l/100 km | 4.3 l/100 km |
| Fuel consumption / economy - combined: | 8.5 l/100 km | 5.1 l/100 km |
| Fuel Type: | Diesel | Diesel |
| Drag coefficient: | 0.28 | |
| Fuel tank volume: | 80 l | 63 l |
| Emission standard: | EURO V | Euro 5 |
| CO2 emissions: | 133 g/km | |
| Power: | 265 hp | 204 hp |
| Max power in: | 3800 rpm. | 3500-4500 rpm. |
| Maximum speed: | 235 km/h | 244 km/h |
| Acceleration from 0 to 100 km/h: | 7.6 sec | 7.7 sec |
| Torque: | 620 Nm/1600-2400 rpm. | 400 Nm @ 1250-3500 rpm. |
| Model Engine: | CLAA, CLAB | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2987 cm3 | 2967 cm3 |
| Engine oil capacity: | 6.4 l | |
| Fuel System: | Diesel Commonrail | Diesel Commonrail |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | Turbo / Intercooler (Turbocharging / Intercooler) |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 15.5 | 16.8 |
| Piston Stroke: | 91.4 mm | |
| Cylinder Bore: | 83 mm | |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive |
| Number of Gears (automatic transmission): | 7 | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4922 mm | 4701 mm |
| Width: | 1922 mm | 1826 mm |
| Width including mirrors: | 2040 mm | |
| Height: | 1674 mm | 1427 mm |
| Wheelbase: | 2980 mm | 2808 mm |
| Front track: | 1661 mm | 1564 mm |
| Rear (Back) track: | 1651 mm | 1551 mm |
| Front overhang: | 862 mm | |
| Rear overhang: | 1031 mm | |
| Minimum volume of Luggage (trunk): | 550 l | 480 l |
| Maximum amount of Luggage (trunk): | 1950 l | 962 l |
| Front suspension: | Helical spring | Multi-link suspension |
| Rear suspension: | Helical spring | Independent on trapezoidal lever |
| Max weight: | 2880 kg | 2125 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 2250 kg | 1575 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Max. roof load: | 90 kg | |
| Permitted trailer load with brakes (8%): | 1800 kg | |
| Minimum turning circle (turning diameter): | 11.8 m | 11.5 m |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 80 kg | |
| Tire size: | 255/55 R 18 | 225/50 R17 |
| Wheel rims size: | R18 | 7.5J x 17 |