2008 Audi RS6 vs. 2005 Mercedes-Benz SL
To start off, 2008 Audi RS6 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz SL would be higher. At 5,980 cc (12 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (604 HP @ 4200 RPM) has 24 more horse power than 2008 Audi RS6. (580 HP @ 6250 RPM) In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 2008 Audi RS6.
Because 2008 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2008 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, 2005 Mercedes-Benz SL (1,001 Nm) has 120 more torque (in Nm) than 2008 Audi RS6. (881 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi RS6.
Compare all specifications:
| 2008 Audi RS6 | 2005 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | RS6 | SL |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4175 cc | 5980 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 3 valves |
| Horse Power | 580 HP | 604 HP |
| Engine RPM | 6250 RPM | 4200 RPM |
| Torque | 881 Nm | 1001 Nm |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Width | 1820 mm | 1820 mm |
