2003 Opel Signum vs. 2005 Pontiac GTO
To start off, 2005 Pontiac GTO is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 5,965 cc (8 cylinders), 2005 Pontiac GTO is equipped with a bigger engine. In terms of performance, 2005 Pontiac GTO (400 HP @ 5200 RPM) has 225 more horse power than 2003 Opel Signum. (175 HP @ 5500 RPM) In normal driving conditions, 2005 Pontiac GTO should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Pontiac GTO weights approximately 115 kg more than 2003 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Pontiac GTO 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 2005 Pontiac GTO. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Signum, 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 GTO (536 Nm) has 166 more torque (in Nm) than 2003 Opel Signum. (370 Nm). This means 2005 Pontiac GTO will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2003 Opel Signum | 2005 Pontiac GTO | |
| Make | Opel | Pontiac |
| Model | Signum | GTO |
| Year Released | 2003 | 2005 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 5965 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 175 HP | 400 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 370 Nm | 536 Nm |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1575 kg | 1690 kg |
| Vehicle Length | 4640 mm | 4830 mm |
| Vehicle Width | 1800 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1400 mm |
| Wheelbase Size | 2840 mm | 2800 mm |
