2006 Cadillac STS vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 3 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 77 more horse power than 2009 BMW Z4. (176 HP @ 5800 RPM). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2009 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 437 kg more than 2009 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 112 more torque (in Nm) than 2009 BMW Z4. (230 Nm @ 3500 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
Compare all specifications:
| 2006 Cadillac STS | 2009 BMW Z4 | |
| Make | Cadillac | BMW |
| Model | STS | Z4 |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 253 HP | 176 HP |
| Engine RPM | 6500 RPM | 5800 RPM |
| Torque | 342 Nm | 230 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Engine Bore Size | 94 mm | 82 mm |
| Engine Stroke Size | 85.6 mm | 78.8 mm |
| Engine Compression Ratio | 10.2:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 229 km/hour | 229 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 6.5 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1782 kg | 1345 kg |
| Vehicle Length | 4990 mm | 4100 mm |
| Vehicle Width | 1850 mm | 1790 mm |
| Vehicle Height | 1470 mm | 1310 mm |
| Wheelbase Size | 2960 mm | 2500 mm |
| Fuel Consumption Overall | 12.4 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 66 L | 55 L |
