2006 Mercedes-Benz SLK vs. 2009 Audi R8
To start off, 2009 Audi R8 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Mercedes-Benz SLK. In addition, the cost of maintenance, including insurance, on 2006 Mercedes-Benz SLK would be higher. At 5,204 cc (10 cylinders), 2009 Audi R8 is equipped with a bigger engine. In terms of performance, 2009 Audi R8 (518 HP @ 8000 RPM) has 250 more horse power than 2006 Mercedes-Benz SLK. (268 HP @ 6000 RPM) In normal driving conditions, 2009 Audi R8 should accelerate faster than 2006 Mercedes-Benz SLK. With that said, vehicle weight also plays an important factor in acceleration. 2006 Mercedes-Benz SLK weights approximately 625 kg more than 2009 Audi R8.
Because 2009 Audi R8 is all wheel drive (AWD), it will have significant more traction and grip than 2006 Mercedes-Benz SLK. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi R8 (530 Nm @ 6500 RPM) has 180 more torque (in Nm) than 2006 Mercedes-Benz SLK. (350 Nm @ 2400 RPM). This means 2009 Audi R8 will have an easier job in driving up hills or pulling heavy equipment than 2006 Mercedes-Benz SLK. 2009 Audi R8 has automatic transmission and 2006 Mercedes-Benz SLK has manual transmission. 2006 Mercedes-Benz SLK will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi R8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Mercedes-Benz SLK | 2009 Audi R8 | |
| Make | Mercedes-Benz | Audi |
| Model | SLK | R8 |
| Year Released | 2006 | 2009 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 3498 cc | 5204 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 268 HP | 518 HP |
| Engine RPM | 6000 RPM | 8000 RPM |
| Torque | 350 Nm | 530 Nm |
| Torque RPM | 2400 RPM | 6500 RPM |
| Engine Compression Ratio | 11.0:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Acceleration 0-100mph | 5.6 seconds | 3.9 seconds |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2205 kg | 1580 kg |
| Vehicle Length | 4090 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1940 mm |
| Vehicle Height | 1300 mm | 1260 mm |
| Wheelbase Size | 2410 mm | 2660 mm |
| Fuel Consumption | 9.4 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 10.6 L/100km | 14.7 L/100km |
| Fuel Tank Capacity | 70 L | 75 L |
