2009 Cadillac STS 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 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2009 Cadillac STS 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 185 more horse power than 2009 Cadillac STS. (320 HP @ 6400 RPM) In normal driving conditions, 2011 Bentley Mulsanne should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2011 Bentley Mulsanne weights approximately 950 kg more than 2009 Cadillac STS. 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 591 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2011 Bentley Mulsanne will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2011 Bentley Mulsanne | |
| Make | Cadillac | Bentley |
| Model | STS | Mulsanne |
| Year Released | 2009 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4564 cc | 6800 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 320 HP | 505 HP |
| Engine RPM | 6400 RPM | 4200 RPM |
| Torque | 427 Nm | 1018 Nm |
| Torque RPM | 4400 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 2585 kg |
| Vehicle Length | 5000 mm | 5575 mm |
| Vehicle Width | 1850 mm | 1925 mm |
| Vehicle Height | 1470 mm | 1521 mm |
| Wheelbase Size | 2960 mm | 3266 mm |
| Fuel Consumption | 9.8 L/100km | 13.1 L/100km |
| Fuel Consumption City | 15.7 L/100km | 21.4 L/100km |
| Fuel Tank Capacity | 64 L | 96 L |
