2003 Audi RS6 vs. 2009 BMW 650
To start off, 2009 BMW 650 is newer by 6 year(s). Which means there will be less support and parts availability for 2003 Audi RS6. In addition, the cost of maintenance, including insurance, on 2003 Audi RS6 would be higher. At 4,799 cc (8 cylinders), 2009 BMW 650 is equipped with a bigger engine. In terms of performance, 2003 Audi RS6 (444 HP @ 6300 RPM) has 83 more horse power than 2009 BMW 650. (361 HP @ 6300 RPM). In normal driving conditions, 2003 Audi RS6 should accelerate faster than 2009 BMW 650. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi RS6 weights approximately 315 kg more than 2009 BMW 650. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 650. In wet, icy, snow, or gravel driving conditions, 2003 Audi RS6 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, 2003 Audi RS6 (560 Nm @ 1950 RPM) has 72 more torque (in Nm) than 2009 BMW 650. (488 Nm @ 3400 RPM). This means 2003 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 650.
Compare all specifications:
| 2003 Audi RS6 | 2009 BMW 650 | |
| Make | Audi | BMW |
| Model | RS6 | 650 |
| Year Released | 2003 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 444 HP | 361 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 560 Nm | 488 Nm |
| Torque RPM | 1950 RPM | 3400 RPM |
| Engine Bore Size | 84.5 mm | 93 mm |
| Engine Stroke Size | 93 mm | 88.3 mm |
| Engine Compression Ratio | 9.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1840 kg | 1525 kg |
| Vehicle Length | 4800 mm | 4830 mm |
| Vehicle Width | 1820 mm | 1380 mm |
| Vehicle Height | 1460 mm | 1860 mm |
| Wheelbase Size | 2760 mm | 2790 mm |
| Fuel Tank Capacity | 70 L | 70 L |
