2009 Audi RS6 vs. 2004 Mercedes-Benz SL
To start off, 2009 Audi RS6 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2004 Mercedes-Benz SL would be higher. At 5,513 cc (8 cylinders), 2004 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 79 more horse power than 2004 Mercedes-Benz SL. (493 HP @ 4200 RPM). In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2004 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 69 kg more than 2004 Mercedes-Benz SL. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2009 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 Mercedes-Benz SL (700 Nm) has 50 more torque (in Nm) than 2009 Audi RS6. (650 Nm). This means 2004 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi RS6.
Compare all specifications:
| 2009 Audi RS6 | 2004 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | RS6 | SL |
| Year Released | 2009 | 2004 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4991 cc | 5513 cc |
| Engine Cylinders | 10 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 572 HP | 493 HP |
| Engine RPM | 6250 RPM | 4200 RPM |
| Torque | 650 Nm | 700 Nm |
| Engine Bore Size | 84.5 mm | 97 mm |
| Engine Stroke Size | 89 mm | 92 mm |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2028 kg | 1959 kg |
| Vehicle Length | 4930 mm | 4540 mm |
| Vehicle Width | 1900 mm | 1840 mm |
| Vehicle Height | 1460 mm | 1300 mm |
| Wheelbase Size | 2850 mm | 2570 mm |
| Fuel Tank Capacity | 80 L | 91 L |
