2008 Audi A4 vs. 2006 BMW X5
To start off, 2008 Audi A4 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 2,981 cc (6 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (225 HP @ 5900 RPM) has 38 more horse power than 2008 Audi A4. (187 HP @ 5700 RPM) In normal driving conditions, 2006 BMW X5 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 360 kg more than 2008 Audi A4. 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 BMW X5 (290 Nm @ 3500 RPM) has 50 more torque (in Nm) than 2008 Audi A4. (240 Nm @ 1950 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4.
Compare all specifications:
| 2008 Audi A4 | 2006 BMW X5 | |
| Make | Audi | BMW |
| Model | A4 | X5 |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 1780 cc | 2981 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 187 HP | 225 HP |
| Engine RPM | 5700 RPM | 5900 RPM |
| Torque | 240 Nm | 290 Nm |
| Torque RPM | 1950 RPM | 3500 RPM |
| Engine Bore Size | 81 mm | 84 mm |
| Engine Stroke Size | 86.4 mm | 89.6 mm |
| Engine Compression Ratio | 9.3:1 | 10.2:1 |
| Drive Type | 4WD | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1475 kg | 1835 kg |
| Vehicle Length | 4550 mm | 4670 mm |
| Vehicle Width | 1780 mm | 1880 mm |
| Vehicle Height | 1430 mm | 1770 mm |
| Wheelbase Size | 2660 mm | 2830 mm |
| Fuel Consumption Overall | 9.4 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 66 L | 92 L |
