2006 Cadillac STS vs. 2007 Pontiac Grand Prix
To start off, 2007 Pontiac Grand Prix is newer by 1 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 3,786 cc (6 cylinders), 2007 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (253 HP) has 53 more horse power than 2007 Pontiac Grand Prix. (200 HP). In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2007 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2006 Cadillac STS weights approximately 426 kg more than 2007 Pontiac Grand Prix. 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 30 more torque (in Nm) than 2007 Pontiac Grand Prix. (312 Nm @ 4000 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2007 Pontiac Grand Prix.
Compare all specifications:
| 2006 Cadillac STS | 2007 Pontiac Grand Prix | |
| Make | Cadillac | Pontiac |
| Model | STS | Grand Prix |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3563 cc | 3786 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 253 HP | 200 HP |
| Torque | 342 Nm | 312 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 94 mm | 97 mm |
| Engine Stroke Size | 85.6 mm | 86 mm |
| Engine Compression Ratio | 10.2:1 | 9.4:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1782 kg | 1356 kg |
| Vehicle Length | 4990 mm | 5040 mm |
| Vehicle Width | 1850 mm | 1830 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2960 mm | 2810 mm |
| Fuel Consumption Highway | 8.7 L/100km | 7.8 L/100km |
| Fuel Consumption City | 13.1 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 9.8 L/100km |
| Fuel Tank Capacity | 66 L | 64 L |
