Comparison Bentley Continental GT II (facelift 2015) Speed 6.0 W12 (635 Hp) AWD Automatic & Bristol Speedster 5.9 i V8 3S (390 Hp) & Aston Martin DB9 Coupe 5.9 i V12 48V (456 Hp) & Alpina B4 Cabrio (facelift 2017) S Edition 99 3.0 (452 Hp) Switch-Tronic
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| Brand: | Bentley | Bristol | Aston Martin | Alpina |
| Model: | Continental | Speedster | DB9 | B4 |
| Generation: | Continental GT II (facelift 2015) | Speedster | DB9 Coupe | B4 Cabrio (facelift 2017) |
| Engine / modification: | Speed 6.0 W12 (635 Hp) AWD Automatic | 5.9 i V8 3S (390 Hp) | 5.9 i V12 48V (456 Hp) | S Edition 99 3.0 (452 Hp) Switch-Tronic |
| Production start: | 2015 year | 2003 year | 2004 year | 2018 year |
| Production end: | 2011 year | 2016 year | ||
| Coupe type: | Coupe | Cabriolet | Coupe | Cabriolet |
| Num. of Doors: | 2 | 2 | 2 | 2 |
| Num. of seats: | 4 | 2 | 2+2 | 4 |
| Fuel consumption / economy - urban: | 21.8 l/100 km | 24 l/100 km | 12.1 l/100 km | |
| Fuel consumption / economy - extra urban: | 10.3 l/100 km | 12 l/100 km | 7.3 l/100 km | |
| Fuel consumption / economy - combined: | 14.6 l/100 km | 9.1 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | |||
| Fuel tank volume: | 90 l | 165 l | 85 l | 60 l |
| Emission standard: | EURO VI | Euro 6 d-TEMP | ||
| CO2 emissions: | 338 g/km | 207 g/km | ||
| Power: | 635 hp | 390 hp | 456 hp | 452 hp |
| Max power in: | 6000 rpm. | 5500 rpm. | 6000 rpm. | 5500-6250 rpm. |
| Maximum speed: | 331 km/h | 257 km/h | 300 km/h | 304 km/h |
| Acceleration from 0 to 100 km/h: | 4.2 sec | 5 sec | 4.9 sec | 4.3 sec |
| Torque: | 820 Nm/2000 rpm. | 500 Nm @ 4000 rpm. | 570 Nm/5000 rpm. | 680 Nm @ 3000-4500 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 5998 cm3 | 5900 cm3 | 5935 cm3 | 2979 cm3 |
| Fuel System: | Multi-point injection | Multi-point injection | Multi-point injection | Direct injection |
| Aspiration / Turbine: | Twin-Turbo | BiTurbo | ||
| Position of cylinders: | W engine | V engine | V engine | Inline |
| Valvetrain: | - | DOHC | ||
| Number of cylinders: | 12 | 8 | 12 | 6 |
| Number of valves per cylinder: | 4 | 4 | 4 | 4 |
| Compression ratio: | 9 | 9.25 | 10.3 | 10.2 |
| Piston Stroke: | 90.2 mm | 90.93 mm | 79.5 mm | 89.6 mm |
| Cylinder Bore: | 84 mm | 101.6 mm | 89 mm | 84 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 8 | 4 | 6 | 8 Switch-Tronic |
| Number of Gears (manual transmission): | 6 | |||
| Length: | 4806 mm | 4674 mm | 4697 mm | 4640 mm |
| Width: | 1944 mm | 1752 mm | 1875 mm | 1825 mm |
| Width including mirrors: | 2227 mm | |||
| Height: | 1394 mm | 1118 mm | 1318 mm | 1380 mm |
| Wheelbase: | 2746 mm | 2890 mm | 2740 mm | 2810 mm |
| Front track: | 1664 mm | 1422 mm | 1568 mm | 1552 mm |
| Rear (Back) track: | 1655 mm | 1435 mm | 1562 mm | 1576 mm |
| Minimum volume of Luggage (trunk): | 358 l | 220 l | ||
| Maximum amount of Luggage (trunk): | 175 l | 370 l | ||
| Front suspension: | Double wishbone | Transverse stabilizer | Double wishbone | |
| Rear suspension: | Multi-link independent | The depreciated rack | Double wishbone | |
| Max weight: | 2750 kg | 2300 kg | ||
| Front brakes: | Ventilated discs | Disc | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc | Ventilated discs | Ventilated discs |
| Kerb Weight: | 2320 kg | 1395 kg | 1710 kg | 1840 kg |
| ABS: | yes | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Electric Steering | Hydraulic Steering | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.3 m | |||
| Permitted trailer load with brakes (12%): | 1700 kg | |||
| Permitted trailer load without brakes: | 750 kg | |||
| Tire size: | 275/35 ZR21 | 255/55 R17 | 235/40 ZR19; 275/35 ZR19 | 245/30 ZR20; 265/30 ZR20 |
| Wheel rims size: | R21 | 8.5J x 17 | 8.5-9.5x19 | 8J x 20; 9J x 20 |