Comparison Alfa Romeo 8C Spider 4.7 V8 (450 Hp) & BMW X3 (G01) 30d (286 Hp) xDrive MHEV Steptronic
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| Brand: | Alfa Romeo | BMW |
| Model: | 8C Competizione | X3 |
| Generation: | 8C Spider | X3 (G01) |
| Engine / modification: | 4.7 V8 (450 Hp) | 30d (286 Hp) xDrive MHEV Steptronic |
| Production start: | 2008 year | 2020 year |
| Production end: | 2010 year | |
| Coupe type: | Roadster | SUV |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - combined: | 15.8 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.30 | |
| Fuel tank volume: | 88 l | 68 l |
| Emission standard: | Euro 5 | EURO 6d |
| CO2 emissions: | 377 g/km | |
| Power: | 450 hp | 286 hp |
| Max power in: | 7000 rpm. | 4000 rpm. |
| Maximum speed: | 290 km/h | 245 km/h |
| Acceleration from 0 to 100 km/h: | 4.4 sec | 5.7 sec |
| Torque: | 480 Nm @ 4750 rpm. | 650 Nm @ 1500-2500 rpm. |
| Stopping distance 100 km/h - 0: | 33 m | |
| Model Engine: | AR8C | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4691 cm3 | 2993 cm3 |
| Engine oil capacity: | 9 l | 7.0 l |
| Coolant: | 12.5 l | |
| Fuel System: | Diesel Commonrail | |
| Maximum engine speed: | 7500 rpm. | |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | |
| Valvetrain: | DOHC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 11.3 | 16.5 |
| Piston Stroke: | 84.5 mm | 90 mm |
| Cylinder Bore: | 94 mm | 84 mm |
| Electric motor power: | 11 | |
| Battery capacity: | 0.528 kWh | |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 8 Steptronic | |
| Number of Gears (manual transmission): | 6 | |
| Length: | 4381 mm | 4708 mm |
| Width: | 1892 mm | 1891 mm |
| Width including mirrors: | 2055 mm | |
| Height: | 1366 mm | 1676 mm |
| Wheelbase: | 2645 mm | 2864 mm |
| Front track: | 1590 mm | 1620 mm |
| Rear (Back) track: | 1589 mm | 1636 mm |
| Ride height(clearance): | 140 mm | 204 mm |
| Approach angle: | 25.6 ° | |
| Departure angle: | 23.4 ° | |
| Ramp angle: | 20.0 ° | |
| Front overhang: | 910 mm | |
| Rear overhang: | 826 mm | |
| Wading depth: | 500 mm | |
| Minimum volume of Luggage (trunk): | 550 l | |
| Maximum amount of Luggage (trunk): | 1600 l | |
| Front suspension: | Double wishbone | |
| Rear suspension: | Multi-link independent | |
| Max weight: | 1855 kg | 2550 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Ventilated discs | |
| Kerb Weight: | 1675 kg | 1930 kg |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | |
| Max. roof load: | 100 kg | |
| Minimum turning circle (turning diameter): | 10.4 m | 12.0 m |
| Permitted trailer load with brakes (12%): | 2400 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 100 kg | |
| Tire size: | Front wheel tires: 245/35 R 20 | 225/60 R18 104W XL |
| Wheel rims size: | Front wheel rims: 9 J x 20 | 7J x 18 |