2003 Opel Signum vs. 2005 Porsche 996
To start off, 2005 Porsche 996 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 3,596 cc (6 cylinders), 2005 Porsche 996 is equipped with a bigger engine. In terms of performance, 2005 Porsche 996 (317 HP @ 6800 RPM) has 142 more horse power than 2003 Opel Signum. (175 HP @ 4000 RPM) In normal driving conditions, 2005 Porsche 996 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 265 kg more than 2005 Porsche 996.
Because 2005 Porsche 996 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2005 Porsche 996 will offer significantly more control. 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, 2003 Opel Signum (371 Nm @ 1900 RPM) has 1 more torque (in Nm) than 2005 Porsche 996. (370 Nm @ 4250 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2005 Porsche 996.
Compare all specifications:
| 2003 Opel Signum | 2005 Porsche 996 | |
| Make | Opel | Porsche |
| Model | Signum | 996 |
| Year Released | 2003 | 2005 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2958 cc | 3596 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 317 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 371 Nm | 370 Nm |
| Torque RPM | 1900 RPM | 4250 RPM |
| Engine Bore Size | 87.5 mm | 96 mm |
| Engine Stroke Size | 82 mm | 82.8 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1405 kg |
| Vehicle Length | 4640 mm | 4440 mm |
| Vehicle Width | 1800 mm | 1780 mm |
| Vehicle Height | 1470 mm | 1310 mm |
| Wheelbase Size | 2700 mm | 2360 mm |
| Fuel Tank Capacity | 60 L | 64 L |
