Comparison Mercedes-Benz R-class (W251, facelift 2010) Long R 300 V6 (232 Hp) G-TRONIC & Audi A4 Avant (B8 8K, facelift 2011) 2.0 TDI (136 Hp) Multitronic start/stop & Audi A4 (B9 8W) 2.0 TDI (122 Hp) S tronic
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| Brand: | Mercedes-Benz | Audi | Audi |
| Model: | R-class | A4 | A4 |
| Generation: | R-class (W251, facelift 2010) Long | A4 Avant (B8 8K, facelift 2011) | A4 (B9 8W) |
| Engine / modification: | R 300 V6 (232 Hp) G-TRONIC | 2.0 TDI (136 Hp) Multitronic start/stop | 2.0 TDI (122 Hp) S tronic |
| Production start: | 2010 year | 2012 year | 2015 year |
| Production end: | 2014 year | 2014 year | 2018 year |
| Coupe type: | Combi | Combi | Sedan |
| Num. of Doors: | 5 | 5 | 4 |
| Num. of seats: | 5-7 | 5 | 5 |
| Fuel consumption / economy - urban: | 14.1 l/100 km | 5.6 l/100 km | 4.7-5.1 l/100 km |
| Fuel consumption / economy - extra urban: | 8.6-8.9 l/100 km | 4.5 l/100 km | 3.5-3.9 l/100 km |
| Fuel consumption / economy - combined: | 10.6-10.8 l/100 km | 4.9 l/100 km | 3.9-4.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Diesel | Diesel |
| Drag coefficient: | 0.30 | 0.27 | |
| Fuel tank volume: | 80 l | 63 l | 40 l |
| Emission standard: | EURO V | EURO V | Euro 6 |
| CO2 emissions: | 248-253 g/km | 129 g/km | 101-112 g/km |
| Power: | 232 hp | 136 hp | 122 hp |
| Max power in: | 6000 rpm. | 4200 rpm. | 3500-4000 rpm. |
| Maximum speed: | 222 km/h | 196 km/h | 204 km/h |
| Acceleration from 0 to 100 km/h: | 9.7 sec | 9.6 sec | 10.2 sec |
| Torque: | 300 Nm @ 2500-5000 rpm. | 320 Nm/1750-2500 rpm. | 320 Nm @ 1500-3250 rpm. |
| Model Engine: | DEUC | ||
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 2996 cm3 | 1968 cm3 | 1968 cm3 |
| Engine oil capacity: | 4.7 l | ||
| Fuel System: | Multi-point injection | Diesel Commonrail | Diesel Commonrail |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | Turbo / Intercooler (Turbocharging / Intercooler) | |
| Position of cylinders: | V engine | Inline | Inline |
| Valvetrain: | DOHC | DOHC | |
| Number of cylinders: | 6 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 11.3 | 16.5 | 16.2 |
| Piston Stroke: | 95.5 mm | 95.5 mm | |
| Cylinder Bore: | 81 mm | 81 mm | |
| Wheel Drive: | Rear wheel drive | Front wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 7G-TRONIC | Multitronic | 7 S tronic |
| Length: | 5157 mm | 4699 mm | 4726 mm |
| Width: | 1922 mm | 1826 mm | 1842 mm |
| Width including mirrors: | 2183 mm | 2040 mm | 2022 mm |
| Height: | 1674 mm | 1436 mm | 1427 mm |
| Wheelbase: | 3215 mm | 2808 mm | 2820 mm |
| Front track: | 1661 mm | 1564 mm | 1572 mm |
| Rear (Back) track: | 1651 mm | 1551 mm | 1555 mm |
| Front overhang: | 922 mm | 862 mm | 880 mm |
| Rear overhang: | 1020 mm | 1029 mm | 1026 mm |
| Minimum volume of Luggage (trunk): | 633 l | 490 l | 480 l |
| Maximum amount of Luggage (trunk): | 2385 l | 1430 l | 965 l |
| Front suspension: | Double wishbone | Multi-link suspension | Multi-link suspension |
| Rear suspension: | Independent, spring multi-link with stabilizer | Independent on trapezoidal lever | Multi-link independent |
| Max weight: | 2840 kg | 2145 kg | 2065 kg |
| Front brakes: | Disc | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Disc | Ventilated discs |
| Kerb Weight: | 2100 kg | 1575 kg | 1465 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | ||
| Max. roof load: | 100 kg | 90 kg | 90 kg |
| Permitted trailer load with brakes (8%): | 1900 kg | 1700 kg | |
| Minimum turning circle (turning diameter): | 11.5 m | 11.6 m | |
| Permitted trailer load with brakes (12%): | 2100 kg | 1500 kg | |
| Permitted trailer load without brakes: | 750 kg | 750 kg | 750 kg |
| Permitted towbar download: | 80 kg | 80 kg | |
| Tire size: | 255/55 R18 | 205/60 R16 | 205/60 R16; 225/50 R17; 245/40 R18; 245/35 R19 |
| Wheel rims size: | R18 | R16 | 7J x 16; R17; R18; R19 |