2003 Alpina Roadster vs. 2004 Aston Martin DB9
To start off, 2004 Aston Martin DB9 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Alpina Roadster. In addition, the cost of maintenance, including insurance, on 2003 Alpina Roadster would be higher. At 5,930 cc (12 cylinders), 2004 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2004 Aston Martin DB9 (450 HP @ 6000 RPM) has 149 more horse power than 2003 Alpina Roadster. (301 HP @ 6300 RPM) In normal driving conditions, 2004 Aston Martin DB9 should accelerate faster than 2003 Alpina Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2004 Aston Martin DB9 weights approximately 84 kg more than 2003 Alpina Roadster. 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, 2004 Aston Martin DB9 (570 Nm) has 208 more torque (in Nm) than 2003 Alpina Roadster. (362 Nm). This means 2004 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alpina Roadster.
Compare all specifications:
| 2003 Alpina Roadster | 2004 Aston Martin DB9 | |
| Make | Alpina | Aston Martin |
| Model | Roadster | DB9 |
| Year Released | 2003 | 2004 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3346 cc | 5930 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 450 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 362 Nm | 570 Nm |
| Engine Bore Size | 87 mm | 89 mm |
| Engine Stroke Size | 93.8 mm | 80 mm |
| Engine Compression Ratio | 10.0:1 | 10.3:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1626 kg | 1710 kg |
| Vehicle Length | 4100 mm | 4700 mm |
| Vehicle Width | 1790 mm | 1880 mm |
| Vehicle Height | 1310 mm | 1320 mm |
| Wheelbase Size | 2500 mm | 2750 mm |
| Fuel Tank Capacity | 55 L | 85 L |
