Comparison Alpina B6 Coupe (F12) 4.4 V8 (540 Hp) BITURBO & Acura RLX 3.5 V6 (310 Hp)
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| Brand: | Alpina | Acura |
| Model: | B6 | RLX |
| Generation: | B6 Coupe (F12) | RLX |
| Engine / modification: | 4.4 V8 (540 Hp) BITURBO | 3.5 V6 (310 Hp) |
| Production start: | 2012 year | 2013 year |
| Coupe type: | Coupe | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 4 | 5 |
| Fuel consumption / economy - urban: | 12.9 l/100 km | 11.8 l/100 km |
| Fuel consumption / economy - extra urban: | 7.4 l/100 km | 7.6 l/100 km |
| Fuel consumption / economy - combined: | 9.4 l/100 km | 9.8 l/100 km |
| Fuel Type: | Diesel | Petrol (Gasoline) |
| Fuel tank volume: | 70 l | 70 l |
| Emission standard: | EURO V | |
| Power: | 540 hp | 310 hp |
| Max power in: | 5200-6250 rpm. | 6500 rpm. |
| Maximum speed: | 320 km/h | |
| Acceleration from 0 to 100 km/h: | 4.3 sec | |
| Torque: | 730 Nm/2800-5000 rpm. | 369 Nm/4500 rpm. |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 4395 cm3 | 3500 cm3 |
| Fuel System: | Direct injection | Direct injection |
| Aspiration / Turbine: | Twin-Turbo | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | SOHC | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 4 | |
| Compression ratio: | 10 | 11.5 |
| Piston Stroke: | 88.3 mm | |
| Cylinder Bore: | 89 mm | |
| Wheel Drive: | Rear wheel drive | |
| Number of Gears (automatic transmission): | 8 | 6 |
| Length: | 4894 mm | 4982 mm |
| Width: | 1894 mm | 1890 mm |
| Height: | 1377 mm | 1465 mm |
| Wheelbase: | 2855 mm | 2850 mm |
| Front track: | 1594 mm | 1632 mm |
| Rear (Back) track: | 1637 mm | 1630 mm |
| Minimum volume of Luggage (trunk): | 460 l | 422 l |
| Front suspension: | Double wishbone | |
| Rear suspension: | Independent, spring multi-link with stabilizer | |
| Max weight: | 2320 kg | |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Disc | |
| Kerb Weight: | 1870 kg | 1784 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Minimum turning circle (turning diameter): | 12.34 m | |
| Tire size: | 255/35 ZR20; 285/30 ZR20 | P245/45 R18; P245/40 R19 |
| Wheel rims size: | 8.5J x 20; 9.5J x 20 | J8 x R18; J8 x R19 |