2004 Audi RS6 vs. 2009 BMW 550
To start off, 2009 BMW 550 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Audi RS6. In addition, the cost of maintenance, including insurance, on 2004 Audi RS6 would be higher. At 4,163 cc (8 cylinders), 2004 Audi RS6 is equipped with a bigger engine. In terms of performance, 2004 Audi RS6 (444 HP @ 6300 RPM) has 82 more horse power than 2009 BMW 550. (362 HP @ 6300 RPM). In normal driving conditions, 2004 Audi RS6 should accelerate faster than 2009 BMW 550. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi RS6 weights approximately 250 kg more than 2009 BMW 550. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 550. In wet, icy, snow, or gravel driving conditions, 2004 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, 2004 Audi RS6 (560 Nm @ 1950 RPM) has 70 more torque (in Nm) than 2009 BMW 550. (490 Nm @ 3400 RPM). This means 2004 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 550.
Compare all specifications:
| 2004 Audi RS6 | 2009 BMW 550 | |
| Make | Audi | BMW |
| Model | RS6 | 550 |
| Year Released | 2004 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2495 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 444 HP | 362 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 560 Nm | 490 Nm |
| Torque RPM | 1950 RPM | 3400 RPM |
| Engine Compression Ratio | 9.3:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 235 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1910 kg | 1660 kg |
| Vehicle Length | 4860 mm | 4850 mm |
| Vehicle Width | 1860 mm | 1490 mm |
| Vehicle Height | 1400 mm | 1850 mm |
| Wheelbase Size | 2770 mm | 2890 mm |
| Fuel Consumption Overall | 14.6 L/100km | 11.1 L/100km |
| Fuel Tank Capacity | 82 L | 70 L |
