2005 BMW 630 vs. 2006 Cadillac STS
To start off, 2006 Cadillac STS is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 630. In addition, the cost of maintenance, including insurance, on 2005 BMW 630 would be higher. At 3,563 cc (6 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 1 more horse power than 2006 Cadillac STS. (253 HP @ 6500 RPM). In normal driving conditions, 2005 BMW 630 should accelerate faster than 2006 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 18 kg more than 2005 BMW 630.
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 42 more torque (in Nm) than 2005 BMW 630. (300 Nm @ 2500 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 630. 2006 Cadillac STS has automatic transmission and 2005 BMW 630 has manual transmission. 2005 BMW 630 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Cadillac STS will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW 630 | 2006 Cadillac STS | |
| Make | BMW | Cadillac |
| Model | 630 | STS |
| Year Released | 2005 | 2006 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2999 cc | 3563 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 254 HP | 253 HP |
| Engine RPM | 6600 RPM | 6500 RPM |
| Torque | 300 Nm | 342 Nm |
| Torque RPM | 2500 RPM | 3200 RPM |
| Engine Bore Size | 85 mm | 94 mm |
| Engine Stroke Size | 88 mm | 85.6 mm |
| Engine Compression Ratio | 10.7:1 | 10.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 229 km/hour |
| Acceleration 0-100mph | 6.9 seconds | 7.4 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1764 kg | 1782 kg |
| Vehicle Length | 4830 mm | 4990 mm |
| Vehicle Width | 1860 mm | 1850 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2670 mm | 2960 mm |
| Fuel Consumption Overall | 9.6 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 70 L | 66 L |
