2009 BMW 650 vs. 2005 Mercedes-Benz SL
To start off, 2009 BMW 650 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 4,966 cc (8 cylinders), 2005 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 BMW 650 (362 HP @ 6300 RPM) has 60 more horse power than 2005 Mercedes-Benz SL. (302 HP @ 4200 RPM). In normal driving conditions, 2009 BMW 650 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 429 kg more than 2009 BMW 650.
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, 2009 BMW 650 (491 Nm) has 21 more torque (in Nm) than 2005 Mercedes-Benz SL. (470 Nm). This means 2009 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercedes-Benz SL.
Compare all specifications:
| 2009 BMW 650 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | 650 | SL |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 4966 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 362 HP | 302 HP |
| Engine RPM | 6300 RPM | 4200 RPM |
| Torque | 491 Nm | 470 Nm |
| Engine Bore Size | 92 mm | 97 mm |
| Engine Stroke Size | 82.7 mm | 84 mm |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1415 kg | 1844 kg |
| Vehicle Length | 4830 mm | 4540 mm |
| Vehicle Width | 1380 mm | 1820 mm |
| Vehicle Height | 1860 mm | 1300 mm |
| Wheelbase Size | 2790 mm | 2570 mm |
| Fuel Consumption Overall | 7 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
