2003 Opel Signum vs. 2005 Porsche 911
To start off, 2005 Porsche 911 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 3,600 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (445 HP @ 5700 RPM) has 270 more horse power than 2003 Opel Signum. (175 HP @ 5500 RPM) In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 15 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 Porsche 911 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 911 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, 2005 Porsche 911 (620 Nm @ 3500 RPM) has 250 more torque (in Nm) than 2003 Opel Signum. (370 Nm @ 1900 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2003 Opel Signum | 2005 Porsche 911 | |
| Make | Opel | Porsche |
| Model | Signum | 911 |
| Year Released | 2003 | 2005 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2958 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 445 HP |
| Engine RPM | 5500 RPM | 5700 RPM |
| Torque | 370 Nm | 620 Nm |
| Torque RPM | 1900 RPM | 3500 RPM |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1575 kg | 1590 kg |
| Vehicle Length | 4640 mm | 4440 mm |
| Vehicle Width | 1800 mm | 1840 mm |
| Vehicle Height | 1470 mm | 1300 mm |
| Wheelbase Size | 2840 mm | 2360 mm |
