2005 Audi S8 vs. 2007 BMW X3
To start off, 2007 BMW X3 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi S8. In addition, the cost of maintenance, including insurance, on 2005 Audi S8 would be higher. At 4,172 cc (8 cylinders), 2005 Audi S8 is equipped with a bigger engine. In terms of performance, 2007 BMW X3 (260 HP @ 6600 RPM) has 13 more horse power than 2005 Audi S8. (247 HP @ 4000 RPM) In normal driving conditions, 2007 BMW X3 should accelerate faster than 2005 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, 2005 Audi S8 (450 Nm @ 3400 RPM) has 145 more torque (in Nm) than 2007 BMW X3. (305 Nm @ 2750 RPM). This means 2005 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW X3.
Compare all specifications:
| 2005 Audi S8 | 2007 BMW X3 | |
| Make | Audi | BMW |
| Model | S8 | X3 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2979 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 260 HP |
| Engine RPM | 4000 RPM | 6600 RPM |
| Torque | 450 Nm | 305 Nm |
| Torque RPM | 3400 RPM | 2750 RPM |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 4 doors | 5 doors |
