2002 Pontiac Grand Prix vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 3 year(s). Which means there will be less support and parts availability for 2002 Pontiac Grand Prix. In addition, the cost of maintenance, including insurance, on 2002 Pontiac Grand Prix would be higher. At 3,129 cc (6 cylinders), 2002 Pontiac Grand Prix is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (175 HP @ 4000 RPM) has 2 more horse power than 2002 Pontiac Grand Prix. (173 HP @ 5200 RPM) In normal driving conditions, 2005 Opel Signum should accelerate faster than 2002 Pontiac Grand Prix. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 106 kg more than 2002 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 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, 2005 Opel Signum (370 Nm @ 1900 RPM) has 106 more torque (in Nm) than 2002 Pontiac Grand Prix. (264 Nm @ 4000 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2002 Pontiac Grand Prix.
Compare all specifications:
| 2002 Pontiac Grand Prix | 2005 Opel Signum | |
| Make | Pontiac | Opel |
| Model | Grand Prix | Signum |
| Year Released | 2002 | 2005 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3129 cc | 2958 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 173 HP | 175 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 264 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 1900 RPM |
| Engine Bore Size | 89 mm | 87.5 mm |
| Engine Stroke Size | 84 mm | 82 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1564 kg | 1670 kg |
| Vehicle Length | 5000 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1360 mm | 1470 mm |
| Wheelbase Size | 3110 mm | 2620 mm |
| Fuel Tank Capacity | 66 L | 60 L |
