2005 BMW X5 vs. 2011 Audi A8
To start off, 2011 Audi A8 is newer by 6 year(s). Which means there will be less support and parts availability for 2005 BMW X5. In addition, the cost of maintenance, including insurance, on 2005 BMW X5 would be higher. At 4,134 cc (8 cylinders), 2011 Audi A8 is equipped with a bigger engine. In terms of performance, 2011 Audi A8 (345 HP @ 4000 RPM) has 130 more horse power than 2005 BMW X5. (215 HP @ 4000 RPM) In normal driving conditions, 2011 Audi A8 should accelerate faster than 2005 BMW X5.
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, 2011 Audi A8 (800 Nm @ 1750 RPM) has 280 more torque (in Nm) than 2005 BMW X5. (520 Nm @ 2000 RPM). This means 2011 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW X5. 2011 Audi A8 has automatic transmission and 2005 BMW X5 has manual transmission. 2005 BMW X5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW X5 | 2011 Audi A8 | |
| Make | BMW | Audi |
| Model | X5 | A8 |
| Year Released | 2005 | 2011 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 4134 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 345 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 520 Nm | 800 Nm |
| Torque RPM | 2000 RPM | 1750 RPM |
| Fuel Type | Diesel | Diesel |
| Top Speed | 210 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 5.5 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4670 mm | 5136 mm |
| Vehicle Width | 1880 mm | 1948 mm |
| Vehicle Height | 1720 mm | 1461 mm |
| Wheelbase Size | 2830 mm | 2992 mm |
| Fuel Tank Capacity | 93 L | 90 L |
