2009 Aston Martin DB9 vs. 1991 Porsche 911
To start off, 2009 Aston Martin DB9 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Porsche 911. In addition, the cost of maintenance, including insurance, on 1991 Porsche 911 would be higher. At 5,933 cc (12 cylinders), 2009 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2009 Aston Martin DB9 (510 HP @ 6500 RPM) has 282 more horse power than 1991 Porsche 911. (228 HP @ 5900 RPM). In normal driving conditions, 2009 Aston Martin DB9 should accelerate faster than 1991 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2009 Aston Martin DB9 weights approximately 585 kg more than 1991 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Aston Martin DB9 (570 Nm @ 5750 RPM) has 284 more torque (in Nm) than 1991 Porsche 911. (286 Nm @ 4800 RPM). This means 2009 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 911.
Compare all specifications:
| 2009 Aston Martin DB9 | 1991 Porsche 911 | |
| Make | Aston Martin | Porsche |
| Model | DB9 | 911 |
| Year Released | 2009 | 1991 |
| Body Type | Coupe | Roadster |
| Engine Position | Front | Rear |
| Engine Size | 5933 cc | 3163 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 510 HP | 228 HP |
| Engine RPM | 6500 RPM | 5900 RPM |
| Torque | 570 Nm | 286 Nm |
| Torque RPM | 5750 RPM | 4800 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1760 kg | 1175 kg |
| Vehicle Length | 4730 mm | 4300 mm |
| Vehicle Width | 1910 mm | 1660 mm |
| Vehicle Height | 1290 mm | 1260 mm |
