2006 BMW 645 vs. 2010 Mercedes-Benz S
To start off, 2010 Mercedes-Benz S is newer by 4 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 5,500 cc (8 cylinders), 2010 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2010 Mercedes-Benz S (382 HP @ 6000 RPM) has 54 more horse power than 2006 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2010 Mercedes-Benz S should accelerate faster than 2006 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2010 Mercedes-Benz S weights approximately 281 kg more than 2006 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2010 Mercedes-Benz S is all wheel drive (AWD), it will have significant more traction and grip than 2006 BMW 645. In wet, icy, snow, or gravel driving conditions, 2010 Mercedes-Benz S will offer significantly more control. 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, 2010 Mercedes-Benz S (530 Nm @ 2800 RPM) has 80 more torque (in Nm) than 2006 BMW 645. (450 Nm @ 3600 RPM). This means 2010 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 645.
Compare all specifications:
| 2006 BMW 645 | 2010 Mercedes-Benz S | |
| Make | BMW | Mercedes-Benz |
| Model | 645 | S |
| Year Released | 2006 | 2010 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 5500 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 382 HP |
| Engine RPM | 6100 RPM | 6000 RPM |
| Torque | 450 Nm | 530 Nm |
| Torque RPM | 3600 RPM | 2800 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1810 kg | 2091 kg |
| Vehicle Length | 4830 mm | 5245 mm |
| Vehicle Width | 1860 mm | 1872 mm |
| Vehicle Height | 1380 mm | 1473 mm |
| Wheelbase Size | 2790 mm | 3165 mm |
| Fuel Tank Capacity | 70 L | 90 L |
