2005 BMW 645 vs. 2005 Mercedes-Benz SL
To start off, both 2005 BMW 645 and 2005 Mercedes-Benz SL were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 79 more horse power than 2005 Mercedes-Benz SL. (247 HP @ 5700 RPM). In normal driving conditions, 2005 BMW 645 should accelerate faster than 2005 Mercedes-Benz SL. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 140 kg more than 2005 Mercedes-Benz SL. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 BMW 645 (447 Nm @ 3600 RPM) has 97 more torque (in Nm) than 2005 Mercedes-Benz SL. (350 Nm @ 3000 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Mercedes-Benz SL.
Compare all specifications:
| 2005 BMW 645 | 2005 Mercedes-Benz SL | |
| Make | BMW | Mercedes-Benz |
| Model | 645 | SL |
| Year Released | 2005 | 2005 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 3722 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 326 HP | 247 HP |
| Engine RPM | 6100 RPM | 5700 RPM |
| Torque | 447 Nm | 350 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Engine Bore Size | 92 mm | 97 mm |
| Engine Stroke Size | 83 mm | 84 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 7.2 seconds |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1895 kg | 1755 kg |
| Vehicle Length | 4830 mm | 4540 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1380 mm | 1300 mm |
| Wheelbase Size | 2890 mm | 2570 mm |
| Fuel Consumption Overall | 12.8 L/100km | 11.6 L/100km |
| Fuel Tank Capacity | 70 L | 80 L |
