2006 Cadillac STS vs. 2012 BMW 520
To start off, 2012 BMW 520 is newer by 6 year(s). Which means there will be less support and parts availability for 2006 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2006 Cadillac STS would be higher. At 3,563 cc (6 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (253 HP @ 6500 RPM) has 71 more horse power than 2012 BMW 520. (182 HP @ 5000 RPM). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2012 BMW 520. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 520 weights approximately 8 kg more than 2006 Cadillac STS.
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, 2006 Cadillac STS (342 Nm @ 3200 RPM) has 72 more torque (in Nm) than 2012 BMW 520. (270 Nm @ 4500 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2012 BMW 520.
Compare all specifications:
| 2006 Cadillac STS | 2012 BMW 520 | |
| Make | Cadillac | BMW |
| Model | STS | 520 |
| Year Released | 2006 | 2012 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 1997 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 253 HP | 182 HP |
| Engine RPM | 6500 RPM | 5000 RPM |
| Torque | 342 Nm | 270 Nm |
| Torque RPM | 3200 RPM | 4500 RPM |
| Engine Bore Size | 94 mm | 90.1 mm |
| Engine Stroke Size | 85.6 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 229 km/hour | 220 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 8.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1782 kg | 1790 kg |
| Vehicle Length | 4990 mm | 4907 mm |
| Vehicle Width | 1850 mm | 1860 mm |
| Vehicle Height | 1470 mm | 1462 mm |
| Wheelbase Size | 2960 mm | 2968 mm |
| Fuel Tank Capacity | 66 L | 70 L |
