2009 Aston Martin DB9 vs. 2008 BMW 730
To start off, 2009 Aston Martin DB9 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 730. In addition, the cost of maintenance, including insurance, on 2008 BMW 730 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 (470 HP @ 6000 RPM) has 242 more horse power than 2008 BMW 730. (228 HP @ 4000 RPM). In normal driving conditions, 2009 Aston Martin DB9 should accelerate faster than 2008 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 730 weights approximately 10 kg more than 2009 Aston Martin DB9.
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, 2009 Aston Martin DB9 (601 Nm @ 5000 RPM) has 101 more torque (in Nm) than 2008 BMW 730. (500 Nm @ 2000 RPM). This means 2009 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 730.
Compare all specifications:
| 2009 Aston Martin DB9 | 2008 BMW 730 | |
| Make | Aston Martin | BMW |
| Model | DB9 | 730 |
| Year Released | 2009 | 2008 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5935 cc | 2993 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 470 HP | 228 HP |
| Engine RPM | 6000 RPM | 4000 RPM |
| Torque | 601 Nm | 500 Nm |
| Torque RPM | 5000 RPM | 2000 RPM |
| Engine Compression Ratio | 10.9:1 | 17.0:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 265 km/hour | 238 km/hour |
| Acceleration 0-100mph | 5.1 seconds | 8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1890 kg | 1900 kg |
| Vehicle Length | 4720 mm | 5040 mm |
| Vehicle Width | 1880 mm | 1910 mm |
| Vehicle Height | 1320 mm | 1500 mm |
| Wheelbase Size | 2750 mm | 3000 mm |
| Fuel Consumption Overall | 16.8 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 80 L | 88 L |
