2006 Audi A8 vs. 2008 BMW X5
To start off, 2008 BMW X5 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Audi A8. In addition, the cost of maintenance, including insurance, on 2006 Audi A8 would be higher. At 5,998 cc, 2006 Audi A8 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 185 kg more than 2006 Audi A8.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 2006 Audi A8 (580 Nm @ 4000 RPM) has 100 more torque (in Nm) than 2008 BMW X5. (480 Nm @ 3700 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW X5.
Compare all specifications:
| 2006 Audi A8 | 2008 BMW X5 | |
| Make | Audi | BMW |
| Model | A8 | X5 |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 4619 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 445 HP | 0 HP |
| Torque | 580 Nm | 480 Nm |
| Torque RPM | 4000 RPM | 3700 RPM |
| Engine Bore Size | 84 mm | 93.1 mm |
| Engine Stroke Size | 90.2 mm | 85 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 5.1 seconds | 6.5 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1995 kg | 2180 kg |
| Vehicle Width | 1900 mm | 1880 mm |
| Wheelbase Size | 3080 mm | 2830 mm |
| Fuel Consumption Overall | 13.8 L/100km | 14.9 L/100km |
| Fuel Tank Capacity | 90 L | 93 L |
