2003 Alpina B7 vs. 2007 Aston Martin DB9
To start off, 2007 Aston Martin DB9 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Alpina B7. In addition, the cost of maintenance, including insurance, on 2003 Alpina B7 would be higher. At 5,935 cc (12 cylinders), 2007 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2003 Alpina B7 (492 HP @ 5500 RPM) has 41 more horse power than 2007 Aston Martin DB9. (451 HP @ 5750 RPM). In normal driving conditions, 2003 Alpina B7 should accelerate faster than 2007 Aston Martin DB9. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alpina B7 weights approximately 165 kg more than 2007 Aston Martin DB9. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2003 Alpina B7 (700 Nm @ 3000 RPM) has 130 more torque (in Nm) than 2007 Aston Martin DB9. (570 Nm @ 5000 RPM). This means 2003 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 2007 Aston Martin DB9.
Compare all specifications:
| 2003 Alpina B7 | 2007 Aston Martin DB9 | |
| Make | Alpina | Aston Martin |
| Model | B7 | DB9 |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4396 cc | 5935 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 492 HP | 451 HP |
| Engine RPM | 5500 RPM | 5750 RPM |
| Torque | 700 Nm | 570 Nm |
| Torque RPM | 3000 RPM | 5000 RPM |
| Engine Bore Size | 92 mm | 89 mm |
| Engine Stroke Size | 82.7 mm | 79.5 mm |
| Engine Compression Ratio | 9.0:1 | 10.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 300 km/hour | 300 km/hour |
| Acceleration 0-100mph | 5.5 seconds | 4.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2000 kg | 1835 kg |
| Vehicle Length | 5040 mm | 4720 mm |
| Vehicle Width | 1910 mm | 1880 mm |
| Vehicle Height | 1500 mm | 1280 mm |
| Wheelbase Size | 3000 mm | 2750 mm |
| Fuel Consumption Overall | 11.2 L/100km | 17.8 L/100km |
| Fuel Tank Capacity | 88 L | 78 L |
