2007 Cadillac STS vs. 2009 Porsche 911
To start off, 2009 Porsche 911 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2007 Cadillac STS would be higher. At 3,596 cc (6 cylinders), 2009 Porsche 911 is equipped with a bigger engine. In terms of performance, 2009 Porsche 911 (321 HP @ 6800 RPM) has 67 more horse power than 2007 Cadillac STS. (254 HP @ 6500 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 2007 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac STS weights approximately 487 kg more than 2009 Porsche 911.
Because 2007 Cadillac STS is four wheel drive (4WD), it will have significant more traction and grip than 2009 Porsche 911. In wet, icy, snow, or gravel driving conditions, 2007 Cadillac STS will offer significantly more control. 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, 2009 Porsche 911 (370 Nm @ 4250 RPM) has 28 more torque (in Nm) than 2007 Cadillac STS. (342 Nm @ 3200 RPM). This means 2009 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2007 Cadillac STS | 2009 Porsche 911 | |
| Make | Cadillac | Porsche |
| Model | STS | 911 |
| Year Released | 2007 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 3556 cc | 3596 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 254 HP | 321 HP |
| Engine RPM | 6500 RPM | 6800 RPM |
| Torque | 342 Nm | 370 Nm |
| Torque RPM | 3200 RPM | 4250 RPM |
| Engine Bore Size | 94 mm | 96 mm |
| Engine Stroke Size | 85.6 mm | 82.8 mm |
| Engine Compression Ratio | 10.5:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 229 km/hour | 280 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1782 kg | 1295 kg |
| Vehicle Length | 4990 mm | 4440 mm |
| Vehicle Width | 1850 mm | 1310 mm |
| Vehicle Height | 1470 mm | 1780 mm |
| Wheelbase Size | 2960 mm | 2360 mm |
| Fuel Consumption Overall | 12.4 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
