2009 Cadillac STS vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 4 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 4,564 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 117 more horse power than 2009 Cadillac STS. (320 HP @ 6400 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 2009 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series weights approximately 365 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.
Because 2013 BMW 6 series is all wheel drive (AWD), it will have significant more traction and grip than 2009 Cadillac STS. In wet, icy, snow, or gravel driving conditions, 2013 BMW 6 series will offer significantly more control. 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, 2013 BMW 6 series (649 Nm @ 4500 RPM) has 222 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2009 Cadillac STS | 2013 BMW 6 series | |
| Make | Cadillac | BMW |
| Model | STS | 6 series |
| Year Released | 2009 | 2013 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4564 cc | 4395 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 437 HP |
| Engine RPM | 6400 RPM | 5500 RPM |
| Torque | 427 Nm | 649 Nm |
| Torque RPM | 4400 RPM | 4500 RPM |
| Engine Compression Ratio | 3.7:1 | 10.0 :1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1635 kg | 2000 kg |
| Vehicle Length | 5000 mm | 4896 mm |
| Vehicle Width | 1850 mm | 2081 mm |
| Vehicle Height | 1470 mm | 1369 mm |
| Wheelbase Size | 2960 mm | 2855 mm |
| Fuel Consumption Highway | 9.8 L/100km | 7.1 L/100km |
| Fuel Consumption City | 15.7 L/100km | 12.9 L/100km |
| Fuel Tank Capacity | 64 L | 70 L |
