Comparison Aston Martin DB4 3.7 (243 Hp) & Alpina XB7 4.4 V8 (621 Hp) AWD Switch-Tronic & Roewe 950 1.8 TGi (185 Hp) Automatic
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| Brand: | Aston Martin | Alpina | Roewe |
| Model: | DB4 | XB7 | 950 |
| Generation: | DB4 | XB7 | 950 |
| Engine / modification: | 3.7 (243 Hp) | 4.4 V8 (621 Hp) AWD Switch-Tronic | 1.8 TGi (185 Hp) Automatic |
| Production start: | 1958 year | 2020 year | 2015 year |
| Production end: | 1963 year | ||
| Coupe type: | Sedan | SUV | Sedan |
| Num. of Doors: | 2 | 5 | 4 |
| Num. of seats: | 4 | 6-7 | 5 |
| Fuel consumption / economy - combined: | 7.6 l/100 km | ||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 83 l | 70 l | |
| Combined fuel consumption (WLTP): | 13.7 l/100 km | ||
| Emission standard: | Euro 6d ISC-FCM | ||
| Power: | 243 hp | 621 hp | 185 hp |
| Max power in: | 5000 rpm. | 5500-6500 rpm. | 5500 rpm. |
| Maximum speed: | 225 km/h | 290 km/h | 220 km/h |
| Acceleration from 0 to 100 km/h: | 4.2 sec | 9.6 sec | |
| CO2 emissions (WLTP): | 311 g/km | ||
| Torque: | 325 Nm/4200 rpm. | 800 Nm @ 2000-5000 rpm. | 290 Nm @ 2000-4000 rpm. |
| Model Engine: | N63B44T3 | ||
| Engine position: | Front, longitudinal | Front, longitudinal | |
| Engine displacement: | 3670 cm3 | 4395 cm3 | |
| Engine oil capacity: | 10.5 l | ||
| Fuel System: | Carburettor | Direct injection | Direct injection |
| Aspiration / Turbine: | Turbocharger | ||
| Position of cylinders: | Inline | Inline | |
| Valvetrain: | DOHC | ||
| Number of cylinders: | 6 | 8 | 4 |
| Number of valves per cylinder: | 4 | ||
| Compression ratio: | 8.25 | 10.5 | |
| Piston Stroke: | 92 mm | 88.3 mm | |
| Cylinder Bore: | 92 mm | 89 mm | |
| Wheel Drive: | All wheel drive (4x4) | Front wheel drive | |
| Number of Gears (automatic transmission): | 8 Switch-Tronic | 6 | |
| Number of Gears (manual transmission): | 4 | ||
| Length: | 4480 mm | 5151 mm | 4996 mm |
| Width: | 1676 mm | 2000 mm | 1857 mm |
| Width including mirrors: | 2218 mm | ||
| Height: | 1321 mm | 1797 mm | 1507 mm |
| Wheelbase: | 2490 mm | 3105 mm | 2837 mm |
| Front track: | 1372 mm | 1682 mm | |
| Rear (Back) track: | 1360 mm | 1703 mm | |
| Ride height(clearance): | 177 mm | 213 mm | |
| Minimum volume of Luggage (trunk): | 750 l | 467 l | |
| Maximum amount of Luggage (trunk): | 2120 l | ||
| Front suspension: | Double wishbone | Independent type McPherson | |
| Rear suspension: | dependent spring suspension | Multi-link independent | |
| Max weight: | 3290 kg | ||
| Front brakes: | Disc | Ventilated discs | |
| Rear brakes: | Disc | Ventilated discs | |
| Kerb Weight: | 1308 kg | 2655 kg | |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | ||
| Power steering: | Electric Steering | ||
| Minimum turning circle (turning diameter): | 10.3 m | 13 m | |
| Permitted trailer load with brakes (12%): | 3500 kg | ||
| Permitted trailer load without brakes: | 750 kg | ||
| Tire size: | 285/45 R21 113Y XL | 245/45 R18 96V | |
| Wheel rims size: | 9.5J x 21 | R18 |