2009 Cadillac STS vs. 2011 BMW 550
To start off, 2011 BMW 550 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 4,400 cc (8 cylinders), 2011 BMW 550 is equipped with a bigger engine. In terms of performance, 2011 BMW 550 (400 HP @ 5500 RPM) has 98 more horse power than 2009 Cadillac STS. (302 HP @ 6300 RPM) In normal driving conditions, 2011 BMW 550 should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 550 weights approximately 345 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 BMW 550 (609 Nm @ 1750 RPM) has 240 more torque (in Nm) than 2009 Cadillac STS. (369 Nm @ 5200 RPM). This means 2011 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2011 BMW 550 | |
| Make | Cadillac | BMW |
| Model | STS | 550 |
| Year Released | 2009 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3599 cc | 4400 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 302 HP | 400 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 369 Nm | 609 Nm |
| Torque RPM | 5200 RPM | 1750 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 1980 kg |
| Vehicle Length | 5000 mm | 4899 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1464 mm |
| Wheelbase Size | 2960 mm | 2968 mm |
| Fuel Consumption | 9.1 L/100km | 10.7 L/100km |
| Fuel Consumption City | 13.8 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 64 L | 70 L |
