2008 BMW 650 vs. 2006 Cadillac STS
To start off, 2008 BMW 650 is newer by 2 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 4,799 cc (8 cylinders), 2008 BMW 650 is equipped with a bigger engine. In terms of performance, 2008 BMW 650 (360 HP @ 6300 RPM) has 107 more horse power than 2006 Cadillac STS. (253 HP @ 6500 RPM). In normal driving conditions, 2008 BMW 650 should accelerate faster than 2006 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 142 kg more than 2008 BMW 650.
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, 2008 BMW 650 (490 Nm @ 3400 RPM) has 148 more torque (in Nm) than 2006 Cadillac STS. (342 Nm @ 3200 RPM). This means 2008 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2006 Cadillac STS.
Compare all specifications:
| 2008 BMW 650 | 2006 Cadillac STS | |
| Make | BMW | Cadillac |
| Model | 650 | STS |
| Year Released | 2008 | 2006 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 3563 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 360 HP | 253 HP |
| Engine RPM | 6300 RPM | 6500 RPM |
| Torque | 490 Nm | 342 Nm |
| Torque RPM | 3400 RPM | 3200 RPM |
| Engine Bore Size | 92.1 mm | 94 mm |
| Engine Stroke Size | 82.7 mm | 85.6 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.5 seconds | 7.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1640 kg | 1782 kg |
| Vehicle Length | 4830 mm | 4990 mm |
| Vehicle Width | 1380 mm | 1850 mm |
| Vehicle Height | 1860 mm | 1470 mm |
| Wheelbase Size | 2790 mm | 2960 mm |
| Fuel Consumption Highway | 10.2 L/100km | 8.7 L/100km |
| Fuel Consumption City | 14.7 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 70 L | 66 L |
