2008 Audi R8 vs. 2005 Mercedes-Benz SL
To start off, 2008 Audi R8 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 4,966 cc (8 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2008 Audi R8 (414 HP @ 7800 RPM) has 112 more horse power than 2005 Mercedes-Benz SL. (302 HP @ 4200 RPM). In normal driving conditions, 2008 Audi R8 should accelerate faster than 2005 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 284 kg more than 2008 Audi R8.
Because 2008 Audi R8 is all wheel drive (AWD), it will have significant more traction and grip than 2005 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2008 Audi R8 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 (470 Nm) has 39 more torque (in Nm) than 2008 Audi R8. (431 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi R8.
Compare all specifications:
| 2008 Audi R8 | 2005 Mercedes-Benz SL | |
| Make | Audi | Mercedes-Benz |
| Model | R8 | SL |
| Year Released | 2008 | 2005 |
| Body Type | Coupe | Convertible |
| Engine Position | Middle | Front |
| Engine Size | 4163 cc | 4966 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 414 HP | 302 HP |
| Engine RPM | 7800 RPM | 4200 RPM |
| Torque | 431 Nm | 470 Nm |
| Engine Bore Size | 84.5 mm | 97 mm |
| Engine Stroke Size | 92.8 mm | 84 mm |
| Drive Type | AWD | Rear |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1560 kg | 1844 kg |
| Vehicle Length | 4440 mm | 4540 mm |
| Vehicle Width | 1910 mm | 1820 mm |
| Vehicle Height | 1260 mm | 1300 mm |
| Wheelbase Size | 2660 mm | 2570 mm |
| Fuel Consumption Overall | 14.6 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 75 L | 80 L |
