2007 Mercedes-Benz CLS vs. 2005 Porsche 911
To start off, 2007 Mercedes-Benz CLS is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Porsche 911. In addition, the cost of maintenance, including insurance, on 2005 Porsche 911 would be higher. At 4,964 cc (8 cylinders), 2007 Mercedes-Benz CLS is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (316 HP @ 6800 RPM) has 14 more horse power than 2007 Mercedes-Benz CLS. (302 HP @ 5600 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2007 Mercedes-Benz CLS. With that said, vehicle weight also plays an important factor in acceleration. 2007 Mercedes-Benz CLS weights approximately 260 kg more than 2005 Porsche 911.
Because 2005 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Mercedes-Benz CLS. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 911 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, 2007 Mercedes-Benz CLS (460 Nm @ 2700 RPM) has 90 more torque (in Nm) than 2005 Porsche 911. (370 Nm @ 4250 RPM). This means 2007 Mercedes-Benz CLS will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 911.
Compare all specifications:
| 2007 Mercedes-Benz CLS | 2005 Porsche 911 | |
| Make | Mercedes-Benz | Porsche |
| Model | CLS | 911 |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4964 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 302 HP | 316 HP |
| Engine RPM | 5600 RPM | 6800 RPM |
| Torque | 460 Nm | 370 Nm |
| Torque RPM | 2700 RPM | 4250 RPM |
| Engine Bore Size | 97 mm | 96.1 mm |
| Engine Stroke Size | 84 mm | 82.8 mm |
| Engine Compression Ratio | 10.0:1 | 11.3:1 |
| Acceleration 0-100mph | 6.1 seconds | 5.6 seconds |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1810 kg | 1550 kg |
| Vehicle Length | 4920 mm | 4440 mm |
| Vehicle Width | 1400 mm | 1840 mm |
| Vehicle Height | 1880 mm | 1300 mm |
| Wheelbase Size | 2860 mm | 2360 mm |
| Fuel Consumption Overall | 11.3 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 89 L | 64 L |
