2009 Audi S8 vs. 2006 BMW X5
To start off, 2009 Audi S8 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW X5. In addition, the cost of maintenance, including insurance, on 2006 BMW X5 would be higher. At 5,204 cc (10 cylinders), 2009 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Audi S8 (450 HP @ 7000 RPM) has 225 more horse power than 2006 BMW X5. (225 HP @ 5900 RPM). In normal driving conditions, 2009 Audi S8 should accelerate faster than 2006 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 660 kg more than 2009 Audi S8.
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 Audi S8 (540 Nm @ 3500 RPM) has 250 more torque (in Nm) than 2006 BMW X5. (290 Nm @ 3500 RPM). This means 2009 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2009 Audi S8 | 2006 BMW X5 | |
| Make | Audi | BMW |
| Model | S8 | X5 |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 2981 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 225 HP |
| Engine RPM | 7000 RPM | 5900 RPM |
| Torque | 540 Nm | 290 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Compression Ratio | 12.5:1 | 10.2:1 |
| Drive Type | AWD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1175 kg | 1835 kg |
| Vehicle Length | 5070 mm | 4670 mm |
| Vehicle Width | 1900 mm | 1880 mm |
| Vehicle Height | 1430 mm | 1770 mm |
| Wheelbase Size | 2950 mm | 2830 mm |
| Fuel Consumption Highway | 12.4 L/100km | 11.2 L/100km |
| Fuel Consumption City | 18.2 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 15.8 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 90 L | 92 L |
