2006 Aston Martin DB9 vs. 2003 Porsche 911
To start off, 2006 Aston Martin DB9 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Porsche 911. In addition, the cost of maintenance, including insurance, on 2003 Porsche 911 would be higher. At 5,932 cc (12 cylinders), 2006 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2006 Aston Martin DB9 (450 HP @ 6000 RPM) has 110 more horse power than 2003 Porsche 911. (340 HP @ 6800 RPM). In normal driving conditions, 2006 Aston Martin DB9 should accelerate faster than 2003 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2006 Aston Martin DB9 weights approximately 330 kg more than 2003 Porsche 911. 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, 2006 Aston Martin DB9 (570 Nm @ 5000 RPM) has 200 more torque (in Nm) than 2003 Porsche 911. (370 Nm @ 4800 RPM). This means 2006 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2003 Porsche 911.
Compare all specifications:
| 2006 Aston Martin DB9 | 2003 Porsche 911 | |
| Make | Aston Martin | Porsche |
| Model | DB9 | 911 |
| Year Released | 2006 | 2003 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 5932 cc | 3596 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 340 HP |
| Engine RPM | 6000 RPM | 6800 RPM |
| Torque | 570 Nm | 370 Nm |
| Torque RPM | 5000 RPM | 4800 RPM |
| Engine Bore Size | 89.1 mm | 96 mm |
| Engine Stroke Size | 79.5 mm | 82.8 mm |
| Engine Compression Ratio | 10.3:1 | 11.3:1 |
| Acceleration 0-100mph | 5.1 seconds | 5.2 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1380 kg |
| Vehicle Length | 4720 mm | 4440 mm |
| Vehicle Width | 1880 mm | 1780 mm |
| Vehicle Height | 1320 mm | 1300 mm |
| Wheelbase Size | 2750 mm | 2360 mm |
| Fuel Consumption Highway | 13.1 L/100km | 8.3 L/100km |
| Fuel Consumption City | 18.1 L/100km | 16.5 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 11.3 L/100km |
| Fuel Tank Capacity | 83 L | 64 L |
