2006 BMW 645 vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW 645. In addition, the cost of maintenance, including insurance, on 2006 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 73 more horse power than 2007 Cadillac STS. (255 HP @ 6500 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2007 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 BMW 645 (450 Nm @ 3600 RPM) has 108 more torque (in Nm) than 2007 Cadillac STS. (342 Nm @ 3200 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2006 BMW 645 | 2007 Cadillac STS | |
| Make | BMW | Cadillac |
| Model | 645 | STS |
| Year Released | 2006 | 2007 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 3556 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 328 HP | 255 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 450 Nm | 342 Nm |
| Torque RPM | 3600 RPM | 3200 RPM |
| Engine Compression Ratio | 10.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4830 mm | 4990 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2790 mm | 2960 mm |
| Fuel Consumption Overall | 13.3 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 70 L | 64 L |
