2005 Audi A8 vs. 2007 BMW X5
To start off, 2007 BMW X5 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Audi A8. In addition, the cost of maintenance, including insurance, on 2005 Audi A8 would be higher. At 4,798 cc (8 cylinders), 2007 BMW X5 is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (342 HP @ 5700 RPM) has 66 more horse power than 2005 Audi A8. (276 HP @ 3750 RPM) In normal driving conditions, 2007 BMW X5 should accelerate faster than 2005 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 260 kg more than 2005 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, 2005 Audi A8 (650 Nm @ 1800 RPM) has 170 more torque (in Nm) than 2007 BMW X5. (480 Nm @ 3700 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW X5.
Compare all specifications:
| 2005 Audi A8 | 2007 BMW X5 | |
| Make | Audi | BMW |
| Model | A8 | X5 |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3934 cc | 4798 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 276 HP | 342 HP |
| Engine RPM | 3750 RPM | 5700 RPM |
| Torque | 650 Nm | 480 Nm |
| Torque RPM | 1800 RPM | 3700 RPM |
| Engine Bore Size | 81 mm | 88.3 mm |
| Engine Stroke Size | 95.5 mm | 93 mm |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 6.7 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 | 2200 kg |
| Vehicle Length | 5060 mm | 4670 mm |
| Vehicle Width | 1900 mm | 1930 mm |
| Vehicle Height | 1450 mm | 1710 mm |
| Wheelbase Size | 2950 mm | 2830 mm |
| Fuel Consumption Overall | 9.7 L/100km | 13.5 L/100km |
| Fuel Tank Capacity | 90 L | 93 L |
