2008 Aston Martin DB9 vs. 2005 Audi A8
To start off, 2008 Aston Martin DB9 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 5,998 cc, 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (450 HP @ 6300 RPM) has 6 more horse power than 2008 Aston Martin DB9. (444 HP @ 6000 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2008 Aston Martin DB9. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 255 kg more than 2008 Aston Martin DB9. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Aston Martin DB9. In wet, icy, snow, or gravel driving conditions, 2005 Audi A8 will offer significantly more control. 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 DB9 (570 Nm) has 10 more torque (in Nm) than 2005 Audi A8. (560 Nm). This means 2008 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A8.
Compare all specifications:
| 2008 Aston Martin DB9 | 2005 Audi A8 | |
| Make | Aston Martin | Audi |
| Model | DB9 | A8 |
| Year Released | 2008 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5934 cc | 5998 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 450 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 570 Nm | 560 Nm |
| Engine Bore Size | 89 mm | 84.1 mm |
| Engine Stroke Size | 79.5 mm | 90 mm |
| Engine Compression Ratio | 10.3:1 | 11.0:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1890 kg | 2145 kg |
| Vehicle Length | 4720 mm | 5200 mm |
| Vehicle Width | 1880 mm | 1900 mm |
| Vehicle Height | 1270 mm | 1460 mm |
| Wheelbase Size | 2750 mm | 3080 mm |
| Fuel Consumption Highway | 13.1 L/100km | 11.2 L/100km |
| Fuel Consumption City | 18.1 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 17.4 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 78 L | 90 L |
