2006 Audi A8 vs. 2009 BMW X5
To start off, 2009 BMW X5 is newer by 3 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 3,934 cc (8 cylinders), 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 BMW X5 (282 HP @ 4400 RPM) has 11 more horse power than 2006 Audi A8. (271 HP @ 3750 RPM) In normal driving conditions, 2009 BMW X5 should accelerate faster than 2006 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW X5 weights approximately 210 kg more than 2006 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 (650 Nm @ 1800 RPM) has 70 more torque (in Nm) than 2009 BMW X5. (580 Nm @ 1750 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW X5.
Compare all specifications:
| 2006 Audi A8 | 2009 BMW X5 | |
| Make | Audi | BMW |
| Model | A8 | X5 |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3934 cc | 2993 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 271 HP | 282 HP |
| Engine RPM | 3750 RPM | 4400 RPM |
| Torque | 650 Nm | 580 Nm |
| Torque RPM | 1800 RPM | 1750 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 95.5 mm | 90 mm |
| Engine Compression Ratio | 18.0:1 | 17.5:1 |
| Fuel Type | Diesel | Diesel |
| Top Speed | 250 km/hour | 238 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 7 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 | 1940 kg | 2150 kg |
| Vehicle Length | 5190 mm | 4860 mm |
| Vehicle Width | 1900 mm | 1940 mm |
| Vehicle Height | 1460 mm | 1740 mm |
| Wheelbase Size | 3080 mm | 2940 mm |
| Fuel Consumption Overall | 9.6 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 90 L | 85 L |
