2009 BMW 520 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 520. In addition, the cost of maintenance, including insurance, on 2009 BMW 520 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 330 more horse power than 2009 BMW 520. (175 HP @ 4000 RPM) In normal driving conditions, 2011 Bentley Mulsanne should accelerate faster than 2009 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2011 Bentley Mulsanne weights approximately 1000 kg more than 2009 BMW 520. 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, 2011 Bentley Mulsanne (1,018 Nm @ 1750 RPM) has 668 more torque (in Nm) than 2009 BMW 520. (350 Nm @ 1750 RPM). This means 2011 Bentley Mulsanne will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 520. 2011 Bentley Mulsanne has automatic transmission and 2009 BMW 520 has manual transmission. 2009 BMW 520 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 Bentley Mulsanne will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW 520 | 2011 Bentley Mulsanne | |
| Make | BMW | Bentley |
| Model | 520 | Mulsanne |
| Year Released | 2009 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 6800 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 175 HP | 505 HP |
| Engine RPM | 4000 RPM | 4200 RPM |
| Torque | 350 Nm | 1018 Nm |
| Torque RPM | 1750 RPM | 1750 RPM |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1585 kg | 2585 kg |
| Vehicle Length | 4850 mm | 5575 mm |
| Vehicle Width | 1850 mm | 1925 mm |
| Vehicle Height | 1470 mm | 1521 mm |
| Wheelbase Size | 2890 mm | 3266 mm |
| Fuel Tank Capacity | 70 L | 96 L |
