Comparison Audi S4 (8E,B7) 4.2i V8 (344 Hp) quattro Tiptronic & BMW 6 Series Convertible (F12) 650i (407 Hp) xDrive Steptronic
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| Brand: | Audi | BMW |
| Model: | S4 | 6 Series |
| Generation: | S4 (8E,B7) | 6 Series Convertible (F12) |
| Engine / modification: | 4.2i V8 (344 Hp) quattro Tiptronic | 650i (407 Hp) xDrive Steptronic |
| Production start: | 2004 year | 2011 year |
| Production end: | 2008 year | 2012 year |
| Coupe type: | Sedan | Cabriolet |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 4 |
| Fuel consumption / economy - urban: | 17.9 l/100 km | 16.6 l/100 km |
| Fuel consumption / economy - extra urban: | 9.1 l/100 km | 8.4-8.5 l/100 km |
| Fuel consumption / economy - combined: | 12.3 l/100 km | 11.4-11.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.3 | 0.32 |
| Fuel tank volume: | 63 l | 70 l |
| Emission standard: | Euro 4 | Euro 5 |
| CO2 emissions: | 295 g/km | 266-267 g/km |
| Power: | 344 hp | 407 hp |
| Max power in: | 7000 rpm. | 5500-6400 rpm. |
| Maximum speed: | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 5.8 sec | 4.9 sec |
| Torque: | 410 Nm @ 3500 rpm. | 600 Nm @ 1750-4500 rpm. |
| Model Engine: | BBK | N63B44 |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4163 cm3 | 4395 cm3 |
| Engine oil capacity: | 9.0 l | 9.5 l |
| Coolant: | 12.0 l | 14.6 l |
| Fuel System: | Multi-point injection | Direct injection |
| Aspiration / Turbine: | Turbocharger | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 5 | 4 |
| Compression ratio: | 11 | 10 |
| Piston Stroke: | 92.8 mm | 88.3 mm |
| Cylinder Bore: | 84.5 mm | 89 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 6 Tiptronic | 8 Steptronic |
| Length: | 4586 mm | 4894 mm |
| Width: | 1781 mm | 1894 mm |
| Height: | 1415 mm | 1365 mm |
| Wheelbase: | 2651 mm | 2855 mm |
| Front track: | 1516 mm | 1600 mm |
| Rear (Back) track: | 1512 mm | 1665 mm |
| Ride height(clearance): | 123 mm | |
| Minimum volume of Luggage (trunk): | 460 l | 300 l |
| Maximum amount of Luggage (trunk): | 833 l | 350 l |
| Front suspension: | Independent multi-link | Double wishbone |
| Rear suspension: | Independent on trapezoidal lever | Multi-link independent |
| Max weight: | 2255 kg | 2465 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1705 kg | 1985 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Hydraulic Steering | Electric Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 11.5 m | 11.7 m |
| Tire size: | 235/40 R18 | 225/55 R17; 245/45 R18; 275/45 R18; 245/40 R19; 275/35 R19; 245/35 R20; 275/30 R20 |
| Wheel rims size: | 8J x 18 | 8J x 17; 8J x 18; 9J x 18; 8.5J x 19; 9J x 19; 8.5J x 20; 9J x 20 |