2007 Mercedes-Benz SLK vs. 2009 Mercedes-Benz CLS
To start off, 2009 Mercedes-Benz CLS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Mercedes-Benz SLK. In addition, the cost of maintenance, including insurance, on 2007 Mercedes-Benz SLK would be higher. At 5,439 cc (8 cylinders), 2007 Mercedes-Benz SLK is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz CLS (475 HP @ 6800 RPM) has 120 more horse power than 2007 Mercedes-Benz SLK. (355 HP @ 6000 RPM) In normal driving conditions, 2009 Mercedes-Benz CLS should accelerate faster than 2007 Mercedes-Benz SLK. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz CLS weights approximately 490 kg more than 2007 Mercedes-Benz SLK. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 Mercedes-Benz CLS (630 Nm @ 5000 RPM) has 119 more torque (in Nm) than 2007 Mercedes-Benz SLK. (511 Nm @ 4000 RPM). This means 2009 Mercedes-Benz CLS will have an easier job in driving up hills or pulling heavy equipment than 2007 Mercedes-Benz SLK.
Compare all specifications:
| 2007 Mercedes-Benz SLK | 2009 Mercedes-Benz CLS | |
| Make | Mercedes-Benz | Mercedes-Benz |
| Model | SLK | CLS |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5439 cc | 2995 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 3 valves | 4 valves |
| Horse Power | 355 HP | 475 HP |
| Engine RPM | 6000 RPM | 6800 RPM |
| Torque | 511 Nm | 630 Nm |
| Torque RPM | 4000 RPM | 5000 RPM |
| Engine Bore Size | 98 mm | 88 mm |
| Engine Stroke Size | 90.5 mm | 82.1 mm |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 4.9 seconds | 7.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1240 kg | 1730 kg |
| Vehicle Length | 4090 mm | 4920 mm |
| Vehicle Width | 1800 mm | 1880 mm |
| Vehicle Height | 1280 mm | 1440 mm |
| Wheelbase Size | 2440 mm | 2860 mm |
| Fuel Consumption Overall | 13.1 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
