2005 Opel Signum vs. 2006 Pontiac Grand Prix
To start off, 2006 Pontiac Grand Prix is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Opel Signum. In addition, the cost of maintenance, including insurance, on 2005 Opel Signum would be higher. At 3,786 cc (6 cylinders), 2006 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2006 Pontiac Grand Prix (260 HP @ 5200 RPM) has 87 more horse power than 2005 Opel Signum. (173 HP @ 5500 RPM) In normal driving conditions, 2006 Pontiac Grand Prix should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 213 kg more than 2006 Pontiac Grand Prix.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than 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, 2006 Pontiac Grand Prix (380 Nm @ 3600 RPM) has 115 more torque (in Nm) than 2005 Opel Signum. (265 Nm @ 2500 RPM). This means 2006 Pontiac Grand Prix will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum.
Compare all specifications:
| 2005 Opel Signum | 2006 Pontiac Grand Prix | |
| Make | Opel | Pontiac |
| Model | Signum | Grand Prix |
| Year Released | 2005 | 2006 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1908 cc | 3786 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 173 HP | 260 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 265 Nm | 380 Nm |
| Torque RPM | 2500 RPM | 3600 RPM |
| Engine Bore Size | 86 mm | 96.5 mm |
| Engine Stroke Size | 86 mm | 86.4 mm |
| Engine Compression Ratio | 9.5:1 | 8.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1347 kg |
| Vehicle Length | 4640 mm | 5040 mm |
| Vehicle Width | 1800 mm | 1830 mm |
| Vehicle Height | 1470 mm | 1430 mm |
| Wheelbase Size | 2620 mm | 2810 mm |
| Fuel Consumption Overall | 9.2 L/100km | 10.8 L/100km |
| Fuel Tank Capacity | 60 L | 64 L |
