2005 BMW 730 vs. 2009 Cadillac STS
To start off, 2009 Cadillac STS is newer by 4 year(s). Which means there will be less support and parts availability for 2005 BMW 730. In addition, the cost of maintenance, including insurance, on 2005 BMW 730 would be higher. At 4,564 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (320 HP @ 6400 RPM) has 95 more horse power than 2005 BMW 730. (225 HP @ 4000 RPM) In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2005 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 340 kg more than 2009 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, 2005 BMW 730 (500 Nm @ 2000 RPM) has 73 more torque (in Nm) than 2009 Cadillac STS. (427 Nm @ 4400 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac STS.
Compare all specifications:
| 2005 BMW 730 | 2009 Cadillac STS | |
| Make | BMW | Cadillac |
| Model | 730 | STS |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 4564 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 225 HP | 320 HP |
| Engine RPM | 4000 RPM | 6400 RPM |
| Torque | 500 Nm | 427 Nm |
| Torque RPM | 2000 RPM | 4400 RPM |
| Engine Compression Ratio | 18.0:1 | 3.7:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1975 kg | 1635 kg |
| Vehicle Length | 5050 mm | 5000 mm |
| Vehicle Width | 1910 mm | 1850 mm |
| Vehicle Height | 1500 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2960 mm |
| Fuel Consumption | 6.4 L/100km | 9.8 L/100km |
| Fuel Consumption City | 11.3 L/100km | 15.7 L/100km |
| Fuel Consumption Overall | 8.2 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 88 L | 64 L |
