2009 Audi A8 vs. 2006 Mercedes-Benz SLK
To start off, 2009 Audi A8 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 4,163 cc (8 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (350 HP @ 6800 RPM) has 82 more horse power than 2006 Mercedes-Benz SLK. (268 HP @ 5750 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2006 Mercedes-Benz SLK.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2006 Mercedes-Benz SLK. In wet, icy, snow, or gravel driving conditions, 2009 Audi A8 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, 2006 Mercedes-Benz SLK (510 Nm @ 4000 RPM) has 68 more torque (in Nm) than 2009 Audi A8. (442 Nm @ 3500 RPM). This means 2006 Mercedes-Benz SLK will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A8.
Compare all specifications:
| 2009 Audi A8 | 2006 Mercedes-Benz SLK | |
| Make | Audi | Mercedes-Benz |
| Model | A8 | SLK |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 3498 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 350 HP | 268 HP |
| Engine RPM | 6800 RPM | 5750 RPM |
| Torque | 442 Nm | 510 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.5 mm | 97.1 mm |
| Engine Stroke Size | 92.8 mm | 92 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Height | 1450 mm | 1280 mm |
| Wheelbase Size | 2950 mm | 2440 mm |
| Fuel Consumption Highway | 10.2 L/100km | 9.4 L/100km |
| Fuel Consumption Overall | 13.1 L/100km | 12 L/100km |
| Fuel Tank Capacity | 90 L | 70 L |
