Comparison BMW M3 (E90) CRT 4.4 (450 Hp) DCT & Rolls-Royce Dawn 6.6 V12 (571 Hp) Automatic & Alpina B6 (E36) 2.8 i 24V (240 Hp) Automatic
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| Brand: | BMW | Rolls-Royce | Alpina |
| Model: | M3 | Dawn | B6 |
| Generation: | M3 (E90) | Dawn | B6 (E36) |
| Engine / modification: | CRT 4.4 (450 Hp) DCT | 6.6 V12 (571 Hp) Automatic | 2.8 i 24V (240 Hp) Automatic |
| Production start: | 2011 year | 2016 year | 1992 year |
| Production end: | 2011 year | 1993 year | |
| Coupe type: | Sedan | Cabriolet | Sedan |
| Num. of Doors: | 4 | 2 | 4 |
| Num. of seats: | 4 | 4 | 5 |
| Fuel consumption / economy - urban: | 22.1 l/100 km | 13.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 10.0 l/100 km | 6.9 l/100 km | |
| Fuel consumption / economy - combined: | 14.4 l/100 km | 8.2 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | ||
| Fuel tank volume: | 63 l | 62 l | |
| Emission standard: | Euro 5 | ||
| CO2 emissions: | 330 g/km | ||
| Power: | 450 hp | 571 hp | 240 hp |
| Max power in: | 8300 rpm. | 5250-6000 rpm. | 6000 rpm. |
| Maximum speed: | 290 km/h | 250 km/h | 250 km/h |
| Acceleration from 0 to 100 km/h: | 4.4 sec | 5.0 sec | 6.5 sec |
| Torque: | 440 Nm @ 3750 rpm. | 820 Nm/1500-5000 rpm. | 293 Nm @ 4200 rpm. |
| Model Engine: | S65B44 | ||
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4361 cm3 | 6592 cm3 | 2753 cm3 |
| Engine oil capacity: | 6.6 l | ||
| Coolant: | 11.4 l | ||
| Fuel System: | Direct injection | Multi-point injection | |
| Position of cylinders: | V engine | Inline | |
| Valvetrain: | DOHC, Double-Vanos | DOHC | |
| Number of cylinders: | 8 | 12 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 |
| Compression ratio: | 12 | 10.5 | |
| Piston Stroke: | 82 mm | 82.8 mm | |
| Cylinder Bore: | 92 mm | 84 mm | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 7 DCT | 8 | 5 |
| Length: | 4614 mm | 5285 mm | 4325 mm |
| Width: | 1817 mm | 1947 mm | 1645 mm |
| Height: | 1416 mm | 1502 mm | 1370 mm |
| Wheelbase: | 2761 mm | 3112 mm | 2570 mm |
| Front track: | 1540 mm | 1405 mm | |
| Rear (Back) track: | 1540 mm | 1415 mm | |
| Minimum volume of Luggage (trunk): | 450 l | 370 l | |
| Maximum amount of Luggage (trunk): | 1125 l | ||
| Front suspension: | Coil spring | ||
| Rear suspension: | Helical spring | ||
| Max weight: | 1970 kg | 1850 kg | |
| Front brakes: | Ventilated discs | Disc | |
| Rear brakes: | Ventilated discs | Disc | |
| Kerb Weight: | 1580 kg | 2560 kg | 1330 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | Hydraulic Steering |
| Minimum turning circle (turning diameter): | 11.7 m | ||
| Tire size: | Front wheel tires: 245/35 R19 | 235/40 R17 | |
| Wheel rims size: | Front wheel rims: 9J x 19 | R17 |