2007 BMW Convertible vs. 2009 Mercedes-Benz SL
To start off, 2009 Mercedes-Benz SL is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW Convertible. In addition, the cost of maintenance, including insurance, on 2007 BMW Convertible would be higher. At 6,208 cc (8 cylinders), 2009 Mercedes-Benz SL is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz SL (518 HP @ 6800 RPM) has 155 more horse power than 2007 BMW Convertible. (363 HP @ 6300 RPM) In normal driving conditions, 2009 Mercedes-Benz SL should accelerate faster than 2007 BMW Convertible. With that said, vehicle weight also plays an important factor in acceleration. 2009 Mercedes-Benz SL weights approximately 980 kg more than 2007 BMW Convertible. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2009 Mercedes-Benz SL (631 Nm @ 5200 RPM) has 141 more torque (in Nm) than 2007 BMW Convertible. (490 Nm @ 3600 RPM). This means 2009 Mercedes-Benz SL will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Convertible.
Compare all specifications:
| 2007 BMW Convertible | 2009 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | Convertible | SL |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 6208 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 363 HP | 518 HP |
| Engine RPM | 6300 RPM | 6800 RPM |
| Torque | 490 Nm | 631 Nm |
| Torque RPM | 3600 RPM | 5200 RPM |
| Engine Compression Ratio | 10.5:1 | 9.0:1 |
| Fuel Type | Gasoline | Diesel |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1850 kg | 2830 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 Tank Capacity | 70 L | 80 L |
