2006 BMW X5 vs. 2011 Audi A8
To start off, 2011 Audi A8 is newer by 5 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 4,200 cc (8 cylinders), 2011 Audi A8 is equipped with a bigger engine. In terms of performance, 2011 Audi A8 (372 HP @ 6800 RPM) has 147 more horse power than 2006 BMW X5. (225 HP @ 5900 RPM) In normal driving conditions, 2011 Audi A8 should accelerate faster than 2006 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2011 Audi A8 weights approximately 165 kg more than 2006 BMW X5. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2011 Audi A8 (444 Nm @ 3500 RPM) has 154 more torque (in Nm) than 2006 BMW X5. (290 Nm @ 3500 RPM). This means 2011 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2006 BMW X5 | 2011 Audi A8 | |
| Make | BMW | Audi |
| Model | X5 | A8 |
| Year Released | 2006 | 2011 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2981 cc | 4200 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 372 HP |
| Engine RPM | 5900 RPM | 6800 RPM |
| Torque | 290 Nm | 444 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Drive Type | 4WD | AWD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1835 kg | 2000 kg |
| Vehicle Length | 4670 mm | 5136 mm |
| Vehicle Width | 1880 mm | 1948 mm |
| Vehicle Height | 1770 mm | 1461 mm |
| Wheelbase Size | 2830 mm | 2992 mm |
| Fuel Consumption Highway | 11.2 L/100km | 8.7 L/100km |
| Fuel Consumption City | 15.7 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 92 L | 90 L |
