2008 Audi A8 vs. 2006 BMW X5
To start off, 2008 Audi A8 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 2,979 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (228 HP @ 3500 RPM) has 21 more horse power than 2008 Audi A8. (207 HP @ 5500 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 60 kg more than 2006 BMW X5.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2008 Audi A8. In wet, icy, snow, or gravel driving conditions, 2006 BMW X5 will offer significantly more control. 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 BMW X5 (300 Nm @ 3500 RPM) has 20 more torque (in Nm) than 2008 Audi A8. (280 Nm @ 3000 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A8.
Compare all specifications:
| 2008 Audi A8 | 2006 BMW X5 | |
| Make | Audi | BMW |
| Model | A8 | X5 |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2772 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 207 HP | 228 HP |
| Engine RPM | 5500 RPM | 3500 RPM |
| Torque | 280 Nm | 300 Nm |
| Torque RPM | 3000 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84 mm |
| Engine Stroke Size | 82.4 mm | 89.6 mm |
| Engine Compression Ratio | 12.5:1 | 10.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 238 km/hour | 202 km/hour |
| Acceleration 0-100mph | 8 seconds | 8.5 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1690 kg | 1630 kg |
| Vehicle Length | 5070 mm | 4670 mm |
| Vehicle Width | 1900 mm | 1880 mm |
| Vehicle Height | 1450 mm | 1720 mm |
| Wheelbase Size | 2950 mm | 2830 mm |
| Fuel Consumption Overall | 8.3 L/100km | 12.7 L/100km |
| Fuel Tank Capacity | 90 L | 93 L |
