2008 BMW 635 vs. 2009 Mercedes-Benz S
To start off, 2009 Mercedes-Benz S is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 635. In addition, the cost of maintenance, including insurance, on 2008 BMW 635 would be higher. At 6,208 cc (8 cylinders), 2009 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2009 Mercedes-Benz S (518 HP @ 6800 RPM) has 236 more horse power than 2008 BMW 635. (282 HP @ 4400 RPM) In normal driving conditions, 2009 Mercedes-Benz S should accelerate faster than 2008 BMW 635. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 635 weights approximately 399 kg more than 2009 Mercedes-Benz S.
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 Mercedes-Benz S (631 Nm @ 5200 RPM) has 50 more torque (in Nm) than 2008 BMW 635. (581 Nm @ 1750 RPM). This means 2009 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 635.
Compare all specifications:
| 2008 BMW 635 | 2009 Mercedes-Benz S | |
| Make | BMW | Mercedes-Benz |
| Model | 635 | S |
| Year Released | 2008 | 2009 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 6208 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 518 HP |
| Engine RPM | 4400 RPM | 6800 RPM |
| Torque | 581 Nm | 631 Nm |
| Torque RPM | 1750 RPM | 5200 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1725 kg | 1326 kg |
| Vehicle Length | 4830 mm | 5210 mm |
| Vehicle Width | 1860 mm | 1880 mm |
| Vehicle Height | 1380 mm | 1480 mm |
| Wheelbase Size | 2790 mm | 3170 mm |
| Fuel Consumption Overall | 7.2 L/100km | 18.1 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
