2009 BMW 635 vs. 2006 Mercedes-Benz SL
To start off, 2009 BMW 635 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Mercedes-Benz SL. In addition, the cost of maintenance, including insurance, on 2006 Mercedes-Benz SL would be higher. At 5,506 cc (12 cylinders), 2006 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2006 Mercedes-Benz SL (493 HP @ 5000 RPM) has 211 more horse power than 2009 BMW 635. (282 HP @ 4400 RPM) In normal driving conditions, 2006 Mercedes-Benz SL should accelerate faster than 2009 BMW 635.
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, 2006 Mercedes-Benz SL (800 Nm @ 1800 RPM) has 220 more torque (in Nm) than 2009 BMW 635. (580 Nm @ 1750 RPM). This means 2006 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 635.
Compare all specifications:
| 2009 BMW 635 | 2006 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | 635 | SL |
| Year Released | 2009 | 2006 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 5506 cc |
| Engine Cylinders | 6 cylinders | 12 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 282 HP | 493 HP |
| Engine RPM | 4400 RPM | 5000 RPM |
| Torque | 580 Nm | 800 Nm |
| Torque RPM | 1750 RPM | 1800 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 90 mm | 87 mm |
| Engine Compression Ratio | 17.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 6.6 seconds | 5.1 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Length | 4830 mm | 4540 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1380 mm | 1300 mm |
| Wheelbase Size | 2790 mm | 2570 mm |
| Fuel Consumption Overall | 7.4 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
