2005 Mercedes-Benz SL vs. 2008 Porsche 911
To start off, 2008 Porsche 911 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz SL would be higher. At 5,439 cc (8 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz SL (469 HP @ 2650 RPM) has 64 more horse power than 2008 Porsche 911. (405 HP @ 6000 RPM). In normal driving conditions, 2005 Mercedes-Benz SL should accelerate faster than 2008 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 415 kg more than 2008 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz SL. In wet, icy, snow, or gravel driving conditions, 2008 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, 2005 Mercedes-Benz SL (700 Nm @ 2650 RPM) has 80 more torque (in Nm) than 2008 Porsche 911. (620 Nm @ 2700 RPM). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2008 Porsche 911. 2005 Mercedes-Benz SL has automatic transmission and 2008 Porsche 911 has manual transmission. 2008 Porsche 911 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz SL will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Mercedes-Benz SL | 2008 Porsche 911 | |
| Make | Mercedes-Benz | Porsche |
| Model | SL | 911 |
| Year Released | 2005 | 2008 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 5439 cc | 3600 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 3 valves | 4 valves |
| Horse Power | 469 HP | 405 HP |
| Engine RPM | 2650 RPM | 6000 RPM |
| Torque | 700 Nm | 620 Nm |
| Torque RPM | 2650 RPM | 2700 RPM |
| Engine Bore Size | 97.1 mm | 100 mm |
| Engine Stroke Size | 92 mm | 76.4 mm |
| Engine Compression Ratio | 9.0:1 | 9.4:1 |
| Acceleration 0-100mph | 4.7 seconds | 4.2 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1955 kg | 1540 kg |
| Vehicle Length | 4540 mm | 4790 mm |
| Vehicle Width | 1820 mm | 1860 mm |
| Vehicle Height | 1300 mm | 1710 mm |
| Wheelbase Size | 2570 mm | 2360 mm |
| Fuel Consumption Overall | 14.4 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 80 L | 64 L |
