2009 Cadillac STS vs. 2007 Porsche 911
To start off, 2009 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Porsche 911. In addition, the cost of maintenance, including insurance, on 2007 Porsche 911 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac STS is equipped with a bigger engine. In terms of performance, 2009 Cadillac STS (321 HP @ 6400 RPM) has 5 more horse power than 2007 Porsche 911. (316 HP @ 4250 RPM). In normal driving conditions, 2009 Cadillac STS should accelerate faster than 2007 Porsche 911. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac STS weights approximately 335 kg more than 2007 Porsche 911. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 2009 Cadillac STS (427 Nm @ 4400 RPM) has 57 more torque (in Nm) than 2007 Porsche 911. (370 Nm @ 4250 RPM). This means 2009 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2007 Porsche 911.
Compare all specifications:
| 2009 Cadillac STS | 2007 Porsche 911 | |
| Make | Cadillac | Porsche |
| Model | STS | 911 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 4565 cc | 3595 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 316 HP |
| Engine RPM | 6400 RPM | 4250 RPM |
| Torque | 427 Nm | 370 Nm |
| Torque RPM | 4400 RPM | 4250 RPM |
| Engine Bore Size | 93 mm | 96 mm |
| Engine Stroke Size | 84 mm | 82.8 mm |
| Engine Compression Ratio | 10.5:1 | 11.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 285 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 5.2 seconds |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1820 kg | 1485 kg |
| Vehicle Length | 4990 mm | 4440 mm |
| Vehicle Width | 1850 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1310 mm |
| Wheelbase Size | 2960 mm | 2360 mm |
| Fuel Consumption Overall | 16.8 L/100km | 11.2 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
