1999 Audi S8 vs. 2011 BMW X5
To start off, 2011 BMW X5 is newer by 12 year(s). Which means there will be less support and parts availability for 1999 Audi S8. In addition, the cost of maintenance, including insurance, on 1999 Audi S8 would be higher. At 4,400 cc (8 cylinders), 2011 BMW X5 is equipped with a bigger engine. In terms of performance, 2011 BMW X5 (555 HP @ 6000 RPM) has 308 more horse power than 1999 Audi S8. (247 HP @ 7000 RPM) In normal driving conditions, 2011 BMW X5 should accelerate faster than 1999 Audi S8. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW X5 weights approximately 685 kg more than 1999 Audi S8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are all wheel drive (AWD) - 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, 2011 BMW X5 (677 Nm @ 1500 RPM) has 347 more torque (in Nm) than 1999 Audi S8. (330 Nm @ 3400 RPM). This means 2011 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8.
Compare all specifications:
| 1999 Audi S8 | 2011 BMW X5 | |
| Make | Audi | BMW |
| Model | S8 | X5 |
| Year Released | 1999 | 2011 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 4400 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 555 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 330 Nm | 677 Nm |
| Torque RPM | 3400 RPM | 1500 RPM |
| Drive Type | AWD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1750 kg | 2435 kg |
| Vehicle Length | 5040 mm | 4851 mm |
| Vehicle Width | 1890 mm | 1994 mm |
| Vehicle Height | 1420 mm | 1763 mm |
| Wheelbase Size | 2890 mm | 2934 mm |
| Fuel Consumption | 9.5 L/100km | 13.8 L/100km |
| Fuel Consumption City | 21.7 L/100km | 19.6 L/100km |
| Fuel Tank Capacity | 90 L | 85 L |
