2009 Aston Martin DB9 vs. 2011 Alpina B5
To start off, 2011 Alpina B5 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Aston Martin DB9. In addition, the cost of maintenance, including insurance, on 2009 Aston Martin DB9 would be higher. At 5,935 cc (12 cylinders), 2009 Aston Martin DB9 is equipped with a bigger engine. In terms of performance, 2011 Alpina B5 (493 HP @ 5500 RPM) has 23 more horse power than 2009 Aston Martin DB9. (470 HP @ 6000 RPM) In normal driving conditions, 2011 Alpina B5 should accelerate faster than 2009 Aston Martin DB9. With that said, vehicle weight also plays an important factor in acceleration. 2009 Aston Martin DB9 weights approximately 80 kg more than 2011 Alpina B5.
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, 2011 Alpina B5 (700 Nm @ 4250 RPM) has 99 more torque (in Nm) than 2009 Aston Martin DB9. (601 Nm @ 5000 RPM). This means 2011 Alpina B5 will have an easier job in driving up hills or pulling heavy equipment than 2009 Aston Martin DB9.
Compare all specifications:
| 2009 Aston Martin DB9 | 2011 Alpina B5 | |
| Make | Aston Martin | Alpina |
| Model | DB9 | B5 |
| Year Released | 2009 | 2011 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 5935 cc | 4397 cc |
| Engine Cylinders | 12 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 470 HP | 493 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 601 Nm | 700 Nm |
| Torque RPM | 5000 RPM | 4250 RPM |
| Engine Bore Size | 89 mm | 92 mm |
| Engine Stroke Size | 79.5 mm | 82.7 mm |
| Engine Compression Ratio | 10.9:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 265 km/hour | 300 km/hour |
| Acceleration 0-100mph | 5.1 seconds | 4.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1890 kg | 1810 kg |
| Vehicle Length | 4720 mm | 4850 mm |
| Vehicle Width | 1880 mm | 1850 mm |
| Vehicle Height | 1320 mm | 1500 mm |
| Wheelbase Size | 2750 mm | 2890 mm |
| Fuel Consumption Overall | 16.8 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 80 L | 70 L |
