2009 Aston Martin DB9 vs. 2007 BMW Convertible
To start off, 2009 Aston Martin DB9 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW Convertible. In addition, the cost of maintenance, including insurance, on 2007 BMW Convertible would be higher. At 5,935 cc (12 cylinders), 2009 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2009 Aston Martin DB9 (464 HP @ 6000 RPM) has 102 more horse power than 2007 BMW Convertible. (362 HP @ 6300 RPM). In normal driving conditions, 2009 Aston Martin DB9 should accelerate faster than 2007 BMW Convertible. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Convertible weights approximately 90 kg more than 2009 Aston Martin DB9.
Let's talk about torque, 2007 BMW Convertible (490 Nm @ 3600 RPM) has 47 more torque (in Nm) than 2009 Aston Martin DB9. (443 Nm @ 5000 RPM). This means 2007 BMW Convertible will have an easier job in driving up hills or pulling heavy equipment than 2009 Aston Martin DB9. 2007 BMW Convertible has automatic transmission and 2009 Aston Martin DB9 has manual transmission. 2009 Aston Martin DB9 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Convertible will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Aston Martin DB9 | 2007 BMW Convertible | |
| Make | Aston Martin | BMW |
| Model | DB9 | Convertible |
| Year Released | 2009 | 2007 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5935 cc | 4799 cc |
| Engine Cylinders | 12 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 464 HP | 362 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 443 Nm | 490 Nm |
| Torque RPM | 5000 RPM | 3600 RPM |
| Engine Compression Ratio | 10.9:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1760 kg | 1850 kg |
| Vehicle Length | 4710 mm | 4830 mm |
| Vehicle Width | 1880 mm | 1380 mm |
| Vehicle Height | 1320 mm | 1860 mm |
| Wheelbase Size | 2750 mm | 2790 mm |
| Fuel Tank Capacity | 85 L | 70 L |
