2004 Audi A8 vs. 2007 Aston Martin DB9
To start off, 2007 Aston Martin DB9 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Audi A8. In addition, the cost of maintenance, including insurance, on 2004 Audi A8 would be higher. At 5,935 cc (12 cylinders), 2007 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2007 Aston Martin DB9 (451 HP @ 5750 RPM) has 221 more horse power than 2004 Audi A8. (230 HP @ 4000 RPM) In normal driving conditions, 2007 Aston Martin DB9 should accelerate faster than 2004 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 Aston Martin DB9 weights approximately 5 kg more than 2004 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Aston Martin DB9. In wet, icy, snow, or gravel driving conditions, 2004 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, 2007 Aston Martin DB9 (570 Nm @ 5000 RPM) has 120 more torque (in Nm) than 2004 Audi A8. (450 Nm @ 1400 RPM). This means 2007 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A8.
Compare all specifications:
| 2004 Audi A8 | 2007 Aston Martin DB9 | |
| Make | Audi | Aston Martin |
| Model | A8 | DB9 |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2966 cc | 5935 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 230 HP | 451 HP |
| Engine RPM | 4000 RPM | 5750 RPM |
| Torque | 450 Nm | 570 Nm |
| Torque RPM | 1400 RPM | 5000 RPM |
| Engine Bore Size | 83 mm | 89 mm |
| Engine Stroke Size | 91.4 mm | 79.5 mm |
| Engine Compression Ratio | 17.0:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 7.8 seconds | 4.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1830 kg | 1835 kg |
| Vehicle Length | 5060 mm | 4720 mm |
| Vehicle Width | 1900 mm | 1880 mm |
| Vehicle Height | 1450 mm | 1280 mm |
| Wheelbase Size | 2950 mm | 2750 mm |
| Fuel Consumption Overall | 8.4 L/100km | 17.8 L/100km |
| Fuel Tank Capacity | 90 L | 78 L |
