Comparison Aston Martin DB9 GT Volante 6.0 V12 (547 Hp) Automatic & BMW 4 Series Gran Coupe (G26) 420d (190 Hp) MHEV xDrive Steptronic
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| Brand: | Aston Martin | BMW |
| Model: | DB9 | 4 Series |
| Generation: | DB9 GT Volante | 4 Series Gran Coupe (G26) |
| Engine / modification: | 6.0 V12 (547 Hp) Automatic | 420d (190 Hp) MHEV xDrive Steptronic |
| Production start: | 2015 year | 2021 year |
| Coupe type: | Cabriolet | Coupe |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2+2 | 5 |
| Fuel Type: | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.26 | |
| Fuel tank volume: | 78 l | 59 l |
| Emission standard: | Euro 6d | |
| Power: | 547 hp | 190 hp |
| Max power in: | 6750 rpm. | 4000 rpm. |
| Maximum speed: | 295 km/h | 233 km/h |
| Acceleration from 0 to 100 km/h: | 4.5 sec | 7.6 sec |
| CO2 emissions (WLTP): | 133-150 g/km | |
| Torque: | 620 Nm/5500 rpm. | 400 Nm @ 1750-2500 rpm. |
| Model Engine: | B47D20B | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 5935 cm3 | 1995 cm3 |
| Engine oil capacity: | 5.5 l | |
| Fuel System: | Diesel Commonrail | |
| Position of cylinders: | V engine | Inline |
| Number of cylinders: | 12 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 16.5 | |
| Piston Stroke: | 90 mm | |
| Cylinder Bore: | 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): | 6 | 8 Steptronic |
| Length: | 4720 mm | 4783 mm |
| Width: | 1852 mm | |
| Width including mirrors: | 2061 mm | |
| Height: | 1282 mm | 1442 mm |
| Wheelbase: | 2740 mm | 2856 mm |
| Front track: | 1597 mm | |
| Rear (Back) track: | 1624 mm | |
| Ride height(clearance): | 140 mm | |
| Minimum volume of Luggage (trunk): | 470 l | |
| Maximum amount of Luggage (trunk): | 1290 l | |
| Front suspension: | Double wishbone | Double wishbone |
| Rear suspension: | Double wishbone | Multi-link independent |
| Max weight: | 2315 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1890 kg | 1760 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | |
| Power steering: | Electric Steering | Electric Steering |
| Max. roof load: | 75 kg | |
| Minimum turning circle (turning diameter): | 12 m | |
| Permitted trailer load with brakes (12%): | 1600 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Permitted towbar download: | 75 kg | |
| Tire size: | 245/35 ZR20; 295/30 ZR20 | 225/55 R17 101Y XL |
| Wheel rims size: | 8.5J x 20; 11J x 20 | 7.5J x 17 |