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, 2005 Audi S8 (247 HP @ 4000 RPM) has 57 more horse power than 2007 BMW X3. (190 HP @ 6000 RPM). In normal driving conditions, 2005 Audi S8 should accelerate faster than 2007 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 45 kg more 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 205 more torque (in Nm) than 2007 BMW X3. (245 Nm @ 3500 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 | 2494 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 247 HP | 190 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 450 Nm | 245 Nm |
| Torque RPM | 3400 RPM | 3500 RPM |
| Drive Type | AWD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1770 kg | 1815 kg |
| Wheelbase Size | 2290 mm | 2800 mm |
| Fuel Tank Capacity | 90 L | 67 L |
