2008 Aston Martin DB7 vs. 2004 BMW 645
To start off, 2008 Aston Martin DB7 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 5,935 cc (12 cylinders), 2008 Aston Martin DB7 is equipped with a bigger engine. In terms of performance, 2008 Aston Martin DB7 (444 HP @ 6000 RPM) has 116 more horse power than 2004 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 2008 Aston Martin DB7 should accelerate faster than 2004 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2008 Aston Martin DB7 weights approximately 220 kg more than 2004 BMW 645. 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, 2008 Aston Martin DB7 (542 Nm @ 5000 RPM) has 92 more torque (in Nm) than 2004 BMW 645. (450 Nm @ 3600 RPM). This means 2008 Aston Martin DB7 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645. 2008 Aston Martin DB7 has automatic transmission and 2004 BMW 645 has manual transmission. 2004 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Aston Martin DB7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Aston Martin DB7 | 2004 BMW 645 | |
| Make | Aston Martin | BMW |
| Model | DB7 | 645 |
| Year Released | 2008 | 2004 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5935 cc | 4398 cc |
| Engine Cylinders | 12 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 328 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 542 Nm | 450 Nm |
| Torque RPM | 5000 RPM | 3600 RPM |
| Engine Bore Size | 89.1 mm | 92 mm |
| Engine Stroke Size | 79.5 mm | 82.7 mm |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.2 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1910 kg | 1690 kg |
| Vehicle Length | 4720 mm | 4830 mm |
| Vehicle Height | 1280 mm | 1380 mm |
| Wheelbase Size | 2600 mm | 2830 mm |
| Fuel Consumption Overall | 19.6 L/100km | 12 L/100km |
| Fuel Tank Capacity | 82 L | 70 L |
