Comparison Audi S8 (D4) 4.0 TFSI V8 (520 Hp) quattro Tiptronic & Audi R8 Coupe (facelift 2012) 5.2 FSI V10 plus (550 Hp) quattro S tronic
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| Brand: | Audi | Audi |
| Model: | S8 | R8 |
| Generation: | S8 (D4) | R8 Coupe (facelift 2012) |
| Engine / modification: | 4.0 TFSI V8 (520 Hp) quattro Tiptronic | 5.2 FSI V10 plus (550 Hp) quattro S tronic |
| Production start: | 2012 year | 2012 year |
| Production end: | 2013 year | 2015 year |
| Coupe type: | Sedan | Coupe |
| Num. of Doors: | 4 | 2 |
| Num. of seats: | 5 | 2 |
| Fuel consumption / economy - urban: | 14.4 l/100 km | 19.9 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 8.6 l/100 km |
| Fuel consumption / economy - combined: | 10.1 l/100 km | 12.9 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.28 | 0.36 |
| Fuel tank volume: | 90 l | 75 l |
| Emission standard: | Euro 6 | Euro 5 |
| CO2 emissions: | 235 g/km | 299 g/km |
| Power: | 520 hp | 550 hp |
| Max power in: | 6000 rpm. | 8000 rpm. |
| Maximum speed: | 250 km/h | 317 km/h |
| Acceleration from 0 to 100 km/h: | 4.2 sec | 3.5 sec |
| Torque: | 650 Nm @ 1700-5500 rpm. | 540 Nm @ 6500 rpm. |
| Model Engine: | CTPA | |
| Engine position: | Front, longitudinal | Rear, longitudinal |
| Engine displacement: | 3993 cm3 | 5204 cm3 |
| Engine oil capacity: | 8.7 l | |
| Coolant: | 14.8 l | |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | DOHC | DOHC |
| Number of cylinders: | 8 | 10 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.3 | 12.5 |
| Piston Stroke: | 89 mm | 92.8 mm |
| Cylinder Bore: | 84.5 mm | 84.5 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Tiptronic | 7 S tronic |
| Length: | 5146 mm | 4440 mm |
| Width: | 1949 mm | 1929 mm |
| Width including mirrors: | 2111 mm | 2029 mm |
| Height: | 1458 mm | 1252 mm |
| Wheelbase: | 2994 mm | 2650 mm |
| Front track: | 1632 mm | 1638 mm |
| Rear (Back) track: | 1623 mm | 1595 mm |
| Front overhang: | 1012 mm | 1007 mm |
| Rear overhang: | 1140 mm | 783 mm |
| Minimum volume of Luggage (trunk): | 520 l | 100 l |
| Front suspension: | Multi-link suspension | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Independent on trapezoidal lever | Independent, spring multi-link with stabilizer |
| Max weight: | 2575 kg | 1895 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1975 kg | 1595 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 100 kg | |
| Permitted trailer load with brakes (8%): | 2300 kg | |
| Minimum turning circle (turning diameter): | 12.3 m | 11.8 m |
| Permitted trailer load with brakes (12%): | 2300 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 95 kg | |
| Tire size: | 265/40 R20 | 235/35 R19; 295/30 R19 |
| Wheel rims size: | 9.0J x 20 | 8.5J x R19; 11J x R19 |