2008 BMW X5 vs. 2009 Mercedes-Benz SLK
To start off, 2009 Mercedes-Benz SLK is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW X5. In addition, the cost of maintenance, including insurance, on 2008 BMW X5 would be higher. At 5,439 cc (8 cylinders), 2009 Mercedes-Benz SLK is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SLK (355 HP @ 5750 RPM) has 5 more horse power than 2008 BMW X5. (350 HP @ 6300 RPM) In normal driving conditions, 2009 Mercedes-Benz SLK should accelerate faster than 2008 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 314 kg more than 2009 Mercedes-Benz SLK.
Because 2008 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2009 Mercedes-Benz SLK. In wet, icy, snow, or gravel driving conditions, 2008 BMW X5 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 Mercedes-Benz SLK (510 Nm @ 4000 RPM) has 35 more torque (in Nm) than 2008 BMW X5. (475 Nm @ 3400 RPM). This means 2009 Mercedes-Benz SLK will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW X5.
Compare all specifications:
| 2008 BMW X5 | 2009 Mercedes-Benz SLK | |
| Make | BMW | Mercedes-Benz |
| Model | X5 | SLK |
| Year Released | 2008 | 2009 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 5439 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 350 HP | 355 HP |
| Engine RPM | 6300 RPM | 5750 RPM |
| Torque | 475 Nm | 510 Nm |
| Torque RPM | 3400 RPM | 4000 RPM |
| Engine Bore Size | 93 mm | 97 mm |
| Engine Stroke Size | 88.3 mm | 92 mm |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1554 kg | 1240 kg |
| Vehicle Length | 4860 mm | 4110 mm |
| Vehicle Width | 1940 mm | 1800 mm |
| Vehicle Height | 1740 mm | 1290 mm |
| Wheelbase Size | 2940 mm | 2440 mm |
| Fuel Consumption Highway | 12.4 L/100km | 10.7 L/100km |
| Fuel Consumption City | 16.8 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 12.5 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 85 L | 70 L |
