2005 Pontiac Grand Prix vs. 2009 Porsche Cayman
To start off, 2009 Porsche Cayman is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 2005 Pontiac Grand Prix would be higher. At 3,786 cc (6 cylinders), 2005 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2009 Porsche Cayman (291 HP @ 6250 RPM) has 31 more horse power than 2005 Pontiac Grand Prix. (260 HP @ 5200 RPM) In normal driving conditions, 2009 Porsche Cayman should accelerate faster than 2005 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2005 Pontiac Grand Prix weights approximately 90 kg more than 2009 Porsche Cayman.
Because 2009 Porsche Cayman is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2009 Porsche Cayman. However, in wet, icy, snow, or gravel driving conditions, 2005 Pontiac Grand Prix, being front wheel drive (FWD), will offer much better control with better grip. 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 Pontiac Grand Prix (380 Nm) has 40 more torque (in Nm) than 2009 Porsche Cayman. (340 Nm). This means 2005 Pontiac Grand Prix will have an easier job in driving up hills or pulling heavy equipment than 2009 Porsche Cayman.
Compare all specifications:
| 2005 Pontiac Grand Prix | 2009 Porsche Cayman | |
| Make | Pontiac | Porsche |
| Model | Grand Prix | Cayman |
| Year Released | 2005 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 3786 cc | 3385 cc |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 260 HP | 291 HP |
| Engine RPM | 5200 RPM | 6250 RPM |
| Torque | 380 Nm | 340 Nm |
| Engine Bore Size | 97.1 mm | 96.3 mm |
| Engine Stroke Size | 86 mm | 78.3 mm |
| Engine Compression Ratio | 8.5:1 | 11.1:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1620 kg | 1530 kg |
| Vehicle Length | 5040 mm | 4350 mm |
| Vehicle Width | 1830 mm | 1310 mm |
| Vehicle Height | 1420 mm | 1810 mm |
| Wheelbase Size | 2810 mm | 2420 mm |
| Fuel Consumption Overall | 10.7 L/100km | 11 L/100km |
| Fuel Tank Capacity | 64 L | 64 L |
