2004 Audi A8 vs. 2008 BMW X5
To start off, 2008 BMW X5 is newer by 4 year(s). Which means there will be less support and parts availability for 2004 Audi A8. In addition, the cost of maintenance, including insurance, on 2004 Audi A8 would be higher. At 4,398 cc, 2008 BMW X5 is equipped with a bigger engine. In terms of performance, 2008 BMW X5 (328 HP @ 6100 RPM) has 111 more horse power than 2004 Audi A8. (217 HP @ 6300 RPM) In normal driving conditions, 2008 BMW X5 should accelerate faster than 2004 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 491 kg more than 2004 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 BMW X5 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2008 BMW X5. However, in wet, icy, snow, or gravel driving conditions, 2004 Audi A8, being front wheel drive (FWD), will offer much better control with better grip. 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, 2008 BMW X5 (440 Nm @ 3700 RPM) has 140 more torque (in Nm) than 2004 Audi A8. (300 Nm @ 3200 RPM). This means 2008 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A8.
Compare all specifications:
| 2004 Audi A8 | 2008 BMW X5 | |
| Make | Audi | BMW |
| Model | A8 | X5 |
| Year Released | 2004 | 2008 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 4398 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 328 HP |
| Engine RPM | 6300 RPM | 6100 RPM |
| Torque | 300 Nm | 440 Nm |
| Torque RPM | 3200 RPM | 3700 RPM |
| Engine Bore Size | 82.5 mm | 92 mm |
| Engine Stroke Size | 92.8 mm | 82.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1700 kg | 2191 kg |
| Vehicle Length | 5060 mm | 4870 mm |
| Vehicle Height | 1450 mm | 1480 mm |
| Wheelbase Size | 2770 mm | 2830 mm |
| Fuel Consumption Overall | 12.8 L/100km | 15.4 L/100km |
| Fuel Tank Capacity | 70 L | 85 L |
