2007 BMW Z4 vs. 2008 Aston Martin DB9
To start off, 2008 Aston Martin DB9 is newer by 1 year(s). Which means there will be less support and parts availability for 2007 BMW Z4. In addition, the cost of maintenance, including insurance, on 2007 BMW Z4 would be higher. At 5,935 cc (12 cylinders), 2008 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2008 Aston Martin DB9 (444 HP @ 6000 RPM) has 106 more horse power than 2007 BMW Z4. (338 HP @ 7900 RPM) In normal driving conditions, 2008 Aston Martin DB9 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Aston Martin DB9 weights approximately 350 kg more than 2007 BMW Z4. 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, 2008 Aston Martin DB9 (571 Nm @ 5000 RPM) has 206 more torque (in Nm) than 2007 BMW Z4. (365 Nm @ 4900 RPM). This means 2008 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2008 Aston Martin DB9 has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Aston Martin DB9 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2008 Aston Martin DB9 | |
| Make | BMW | Aston Martin |
| Model | Z4 | DB9 |
| Year Released | 2007 | 2008 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 5935 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 444 HP |
| Engine RPM | 7900 RPM | 6000 RPM |
| Torque | 365 Nm | 571 Nm |
| Torque RPM | 4900 RPM | 5000 RPM |
| Engine Bore Size | 87 mm | 89 mm |
| Engine Stroke Size | 91 mm | 79.5 mm |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 300 km/hour |
| Acceleration 0-100mph | 5 seconds | 4.9 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1835 kg |
| Vehicle Length | 4120 mm | 4720 mm |
| Vehicle Width | 1790 mm | 1880 mm |
| Vehicle Height | 1310 mm | 1280 mm |
| Wheelbase Size | 2500 mm | 2750 mm |
| Fuel Consumption Overall | 12.1 L/100km | 16.5 L/100km |
| Fuel Tank Capacity | 55 L | 78 L |
