2002 Audi A8 vs. 2009 BMW 635
To start off, 2009 BMW 635 is newer by 7 year(s). Which means there will be less support and parts availability for 2002 Audi A8. In addition, the cost of maintenance, including insurance, on 2002 Audi A8 would be higher. At 4,172 cc (8 cylinders), 2002 Audi A8 is equipped with a bigger engine. In terms of performance, 2002 Audi A8 (330 HP @ 6500 RPM) has 48 more horse power than 2009 BMW 635. (282 HP @ 4400 RPM). In normal driving conditions, 2002 Audi A8 should accelerate faster than 2009 BMW 635. With that said, vehicle weight also plays an important factor in acceleration. 2002 Audi A8 weights approximately 130 kg more than 2009 BMW 635. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2002 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 635. In wet, icy, snow, or gravel driving conditions, 2002 Audi A8 will offer significantly more control. 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, 2009 BMW 635 (581 Nm @ 1750 RPM) has 151 more torque (in Nm) than 2002 Audi A8. (430 Nm @ 3500 RPM). This means 2009 BMW 635 will have an easier job in driving up hills or pulling heavy equipment than 2002 Audi A8.
Compare all specifications:
| 2002 Audi A8 | 2009 BMW 635 | |
| Make | Audi | BMW |
| Model | A8 | 635 |
| Year Released | 2002 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 2993 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 330 HP | 282 HP |
| Engine RPM | 6500 RPM | 4400 RPM |
| Torque | 430 Nm | 581 Nm |
| Torque RPM | 3500 RPM | 1750 RPM |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 93 mm | 90 mm |
| Acceleration 0-100mph | 6.3 seconds | 6.3 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1855 kg | 1725 kg |
| Vehicle Length | 5060 mm | 4830 mm |
| Vehicle Width | 1900 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2950 mm | 2790 mm |
| Fuel Consumption Overall | 11.9 L/100km | 7.2 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
