2007 Aston Martin DB9 vs. 2005 BMW 325
To start off, 2007 Aston Martin DB9 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 BMW 325. In addition, the cost of maintenance, including insurance, on 2005 BMW 325 would be higher. At 5,935 cc (12 cylinders), 2007 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2007 Aston Martin DB9 (450 HP @ 6000 RPM) has 260 more horse power than 2005 BMW 325. (190 HP @ 7400 RPM). In normal driving conditions, 2007 Aston Martin DB9 should accelerate faster than 2005 BMW 325. With that said, vehicle weight also plays an important factor in acceleration. 2007 Aston Martin DB9 weights approximately 80 kg more than 2005 BMW 325. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2007 Aston Martin DB9 (570 Nm) has 333 more torque (in Nm) than 2005 BMW 325. (237 Nm). This means 2007 Aston Martin DB9 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 325.
Compare all specifications:
| 2007 Aston Martin DB9 | 2005 BMW 325 | |
| Make | Aston Martin | BMW |
| Model | DB9 | 325 |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 5935 cc | 2491 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 190 HP |
| Engine RPM | 6000 RPM | 7400 RPM |
| Torque | 570 Nm | 237 Nm |
| Engine Bore Size | 89 mm | 84 mm |
| Engine Stroke Size | 79.5 mm | 75 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1710 kg | 1630 kg |
| Vehicle Length | 4720 mm | 4480 mm |
| Vehicle Width | 1890 mm | 1750 mm |
| Vehicle Height | 1320 mm | 1440 mm |
| Wheelbase Size | 2750 mm | 2830 mm |
| Fuel Consumption Highway | 13.1 L/100km | 9.1 L/100km |
| Fuel Consumption City | 18.1 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 80 L | 63 L |
