2001 Opel Signum vs. 1981 Porsche 911
To start off, 2001 Opel Signum is newer by 20 year(s). Which means there will be less support and parts availability for 1981 Porsche 911. In addition, the cost of maintenance, including insurance, on 1981 Porsche 911 would be higher. At 3,164 cc (6 cylinders), 1981 Porsche 911 is equipped with a bigger engine. In terms of performance, 1981 Porsche 911 (232 HP @ 5900 RPM) has 57 more horse power than 2001 Opel Signum. (175 HP @ 4000 RPM) In normal driving conditions, 1981 Porsche 911 should accelerate faster than 2001 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2001 Opel Signum weights approximately 410 kg more than 1981 Porsche 911.
Because 1981 Porsche 911 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 1981 Porsche 911. However, in wet, icy, snow, or gravel driving conditions, 2001 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, 2001 Opel Signum (370 Nm @ 1900 RPM) has 86 more torque (in Nm) than 1981 Porsche 911. (284 Nm @ 4800 RPM). This means 2001 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1981 Porsche 911.
Compare all specifications:
| 2001 Opel Signum | 1981 Porsche 911 | |
| Make | Opel | Porsche |
| Model | Signum | 911 |
| Year Released | 2001 | 1981 |
| Body Type | Hatchback | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 2958 cc | 3164 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 175 HP | 232 HP |
| Engine RPM | 4000 RPM | 5900 RPM |
| Torque | 370 Nm | 284 Nm |
| Torque RPM | 1900 RPM | 4800 RPM |
| Engine Bore Size | 87.5 mm | 95 mm |
| Engine Stroke Size | 82 mm | 74.4 mm |
| Engine Compression Ratio | 18.5:1 | 10.3:1 |
| Top Speed | 221 km/hour | 246 km/hour |
| Acceleration 0-100mph | 9.4 seconds | 6.3 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 1260 kg |
| Vehicle Length | 4640 mm | 4300 mm |
| Vehicle Width | 1800 mm | 1660 mm |
| Vehicle Height | 1470 mm | 1330 mm |
| Wheelbase Size | 2710 mm | 2270 mm |
| Fuel Tank Capacity | 60 L | 80 L |
