Comparison Mercedes-Benz R-class (W251) Long R 350 V6 (272 Hp) G-TRONIC & Audi A4 (B8 8K, facelift 2011) 2.0 TDI (143 Hp)
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| Brand: | Mercedes-Benz | Audi |
| Model: | R-class | A4 |
| Generation: | R-class (W251) Long | A4 (B8 8K, facelift 2011) |
| Engine / modification: | R 350 V6 (272 Hp) G-TRONIC | 2.0 TDI (143 Hp) |
| Production start: | 2007 year | 2011 year |
| Production end: | 2010 year | 2013 year |
| Coupe type: | Combi | Sedan |
| Num. of Doors: | 5 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 15.4-15.6 l/100 km | 5.4 l/100 km |
| Fuel consumption / economy - extra urban: | 8.6-8.8 l/100 km | 4.0 l/100 km |
| Fuel consumption / economy - combined: | 11.1-11.3 l/100 km | 4.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.26 | |
| Fuel tank volume: | 80 l | 63 l |
| Emission standard: | EURO V | EURO V |
| CO2 emissions: | 265 g/km | 119 g/km |
| Power: | 272 hp | 143 hp |
| Max power in: | 6000 rpm. | 4200 rpm. |
| Maximum speed: | 234 km/h | 215 km/h |
| Acceleration from 0 to 100 km/h: | 8.2 sec | 9.2 sec |
| Torque: | 350 Nm @ 2400-5000 rpm. | 320 Nm/1750-2500 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 3498 cm3 | 1968 cm3 |
| Fuel System: | Multi-point injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | V engine | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 6 | 4 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 10.7 | 16.5 |
| Piston Stroke: | 95.5 mm | |
| Cylinder Bore: | 81 mm | |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 7G-TRONIC | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 5157 mm | 4701 mm |
| Width: | 1922 mm | 1826 mm |
| Width including mirrors: | 2040 mm | |
| Height: | 1674 mm | 1427 mm |
| Wheelbase: | 3215 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): | 480 l | |
| Maximum amount of Luggage (trunk): | 2385 l | 962 l |
| Front suspension: | Double wishbone | Multi-link suspension |
| Rear suspension: | Independent, spring multi-link with stabilizer | Independent on trapezoidal lever |
| Max weight: | 2810 kg | 2030 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc |
| Kerb Weight: | 2175 kg | 1480 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): | 12.4 m | 11.5 m |
| Permitted trailer load with brakes (12%): | 2100 kg | 1600 kg |
| Permitted trailer load without brakes: | 750 kg | 750 kg |
| Permitted towbar download: | 80 kg | |
| Tire size: | 235/65 R17 | 225/55 R16 |
| Wheel rims size: | R17 | 7.5J x R16 |