2009 BMW 635 vs. 2011 Bentley Mulsanne
To start off, 2011 Bentley Mulsanne is newer by 2 year(s). Which means there will be less support and parts availability for 2009 BMW 635. In addition, the cost of maintenance, including insurance, on 2009 BMW 635 would be higher. At 6,800 cc (8 cylinders), 2011 Bentley Mulsanne is equipped with a bigger engine. In terms of performance, 2011 Bentley Mulsanne (505 HP @ 4200 RPM) has 223 more horse power than 2009 BMW 635. (282 HP @ 4400 RPM) In normal driving conditions, 2011 Bentley Mulsanne should accelerate faster than 2009 BMW 635.
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, 2011 Bentley Mulsanne (1,018 Nm @ 1750 RPM) has 438 more torque (in Nm) than 2009 BMW 635. (580 Nm @ 1750 RPM). This means 2011 Bentley Mulsanne will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 635.
Compare all specifications:
| 2009 BMW 635 | 2011 Bentley Mulsanne | |
| Make | BMW | Bentley |
| Model | 635 | Mulsanne |
| Year Released | 2009 | 2011 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 6800 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 282 HP | 505 HP |
| Engine RPM | 4400 RPM | 4200 RPM |
| Torque | 580 Nm | 1018 Nm |
| Torque RPM | 1750 RPM | 1750 RPM |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4830 mm | 5575 mm |
| Vehicle Width | 1860 mm | 1925 mm |
| Vehicle Height | 1380 mm | 1521 mm |
| Wheelbase Size | 2790 mm | 3266 mm |
| Fuel Tank Capacity | 70 L | 96 L |
