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 4,172 cc (8 cylinders), 2004 Audi A8 is equipped with a bigger engine. In terms of performance, 2004 Audi A8 (330 HP @ 6500 RPM) has 70 more horse power than 2008 BMW X5. (260 HP @ 6600 RPM). In normal driving conditions, 2004 Audi A8 should accelerate faster than 2008 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A8 weights approximately 226 kg more than 2008 BMW X5. 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, 2004 Audi A8 (450 Nm @ 3500 RPM) has 145 more torque (in Nm) than 2008 BMW X5. (305 Nm @ 2750 RPM). This means 2004 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW X5.
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 | 4172 cc | 3001 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 330 HP | 260 HP |
| Engine RPM | 6500 RPM | 6600 RPM |
| Torque | 450 Nm | 305 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Compression Ratio | 11.0:1 | 10.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 209 km/hour |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1776 kg | 1550 kg |
| Vehicle Length | 5060 mm | 4860 mm |
| Vehicle Width | 1900 mm | 1940 mm |
| Vehicle Height | 1450 mm | 1770 mm |
| Wheelbase Size | 2950 mm | 2940 mm |
| Fuel Consumption Overall | 11.9 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 90 L | 85 L |
