2009 BMW M6 vs. 2005 Mercedes-Benz SL
To start off, 2009 BMW M6 is newer by 4 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 5,506 cc (12 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 BMW M6 (500 HP @ 7750 RPM) has 7 more horse power than 2005 Mercedes-Benz SL. (493 HP @ 4200 RPM). In normal driving conditions, 2009 BMW M6 should accelerate faster than 2005 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz SL weights approximately 4 kg more than 2009 BMW M6.
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, 2005 Mercedes-Benz SL (800 Nm) has 280 more torque (in Nm) than 2009 BMW M6. (520 Nm). This means 2005 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW M6.
Compare all specifications:
| 2009 BMW M6 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | M6 | SL |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4999 cc | 5506 cc |
| Engine Cylinders | 10 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 500 HP | 493 HP |
| Engine RPM | 7750 RPM | 4200 RPM |
| Torque | 520 Nm | 800 Nm |
| Engine Bore Size | 92 mm | 82 mm |
| Engine Stroke Size | 75.2 mm | 87 mm |
| Engine Compression Ratio | 12.0:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2005 kg | 2009 kg |
| Vehicle Length | 4880 mm | 4540 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1380 mm | 1300 mm |
| Wheelbase Size | 2790 mm | 2570 mm |
| Fuel Consumption Overall | 15.2 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
