Comparison Mercury Grand Marquis II 4.6 V8 (235 Hp) & Aston Martin DB9 Coupe (facelift 2012) 6.0 V12 (517 Hp) Automatic & Alpina B7 (G12) 4.4 V8 (608 Hp) Allrad Switch-Tronic
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| Brand: | Mercury | Aston Martin | Alpina |
| Model: | Grand Marquis | DB9 | B7 |
| Generation: | Grand Marquis II | DB9 Coupe (facelift 2012) | B7 (G12) |
| Engine / modification: | 4.6 V8 (235 Hp) | 6.0 V12 (517 Hp) Automatic | 4.4 V8 (608 Hp) Allrad Switch-Tronic |
| Production start: | 2001 year | 2012 year | 2016 year |
| Production end: | 2002 year | ||
| Coupe type: | Sedan | Coupe | Sedan |
| Num. of Doors: | 4 | 2 | 4 |
| Num. of seats: | 5 | 2/2+2 | 4 |
| Fuel consumption / economy - urban: | 21.6 l/100 km | 14.7 l/100 km | |
| Fuel consumption / economy - extra urban: | 10 l/100 km | 7.9 l/100 km | |
| Fuel consumption / economy - combined: | 14.3 l/100 km | 10.4 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 72 l | 78 l | 78 l |
| Emission standard: | EURO VI | ||
| CO2 emissions: | 333 g/km | 242 g/km | |
| Power: | 235 hp | 517 hp | 608 hp |
| Max power in: | 4750 rpm. | 6500 rpm. | 5750-6250 rpm. |
| Maximum speed: | 295 km/h | 310 km/h | |
| Acceleration from 0 to 100 km/h: | 4.6 sec | 3.7 sec | |
| Torque: | 373 Nm @ 4000 rpm. | 620 Nm/5500 rpm. | 800 Nm/3000-5000 rpm. |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4601 cm3 | 5935 cm3 | 4395 cm3 |
| Fuel System: | Multi-point injection | Direct injection | |
| Aspiration / Turbine: | BiTurbo | ||
| Position of cylinders: | V engine | V engine | V engine |
| Valvetrain: | OHC | ||
| Number of cylinders: | 8 | 12 | 8 |
| Number of valves per cylinder: | 2 | 4 | |
| Compression ratio: | 9.4 | 10 | |
| Piston Stroke: | 90 mm | 88.3 mm | |
| Cylinder Bore: | 90.2 mm | 89 mm | |
| Wheel Drive: | Rear wheel drive | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 4 | 6 | 8 Switch-Tronic |
| Length: | 5380 mm | 4720 mm | 5250 mm |
| Width: | 1980 mm | 1902 mm | |
| Width including mirrors: | 2061 mm | 2169 mm | |
| Height: | 1440 mm | 1282 mm | 1491 mm |
| Wheelbase: | 2910 mm | 2740 mm | 3210 mm |
| Front track: | 1600 mm | 1622 mm | |
| Rear (Back) track: | 1610 mm | 1619 mm | |
| Front overhang: | 892 mm | ||
| Rear overhang: | 1148 mm | ||
| Minimum volume of Luggage (trunk): | 585 l | 515 l | |
| Front suspension: | Double wishbone | Double wishbone | |
| Rear suspension: | Helical spring | Double wishbone | |
| Max weight: | 2735 kg | ||
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1795 kg | 1785 kg | 2035 kg |
| ABS: | yes | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion | |
| Power steering: | Hydraulic Steering | Electric Steering | Electric Steering |
| Tire size: | 225/60 R16 | 245/35 ZR20; 295/30 ZR20 | 255/40 ZR20; 295/35 ZR20 |
| Wheel rims size: | 8.5J x 20; 11J x 20 | 8,5J x 20; 10J x 20 |