2008 Audi S8 vs. 2006 BMW X5
To start off, 2008 Audi S8 is newer by 2 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 5,199 cc (10 cylinders), 2008 Audi S8 is equipped with a bigger engine. In terms of performance, 2008 Audi S8 (450 HP @ 7000 RPM) has 134 more horse power than 2006 BMW X5. (316 HP @ 6100 RPM). In normal driving conditions, 2008 Audi S8 should accelerate faster than 2006 BMW X5.
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 Audi S8 (540 Nm @ 3500 RPM) has 100 more torque (in Nm) than 2006 BMW X5. (440 Nm @ 3700 RPM). This means 2008 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2008 Audi S8 | 2006 BMW X5 | |
| Make | Audi | BMW |
| Model | S8 | X5 |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5199 cc | 4398 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 316 HP |
| Engine RPM | 7000 RPM | 6100 RPM |
| Torque | 540 Nm | 440 Nm |
| Torque RPM | 3500 RPM | 3700 RPM |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
