2007 Opel Signum vs. 1973 Porsche 911
To start off, 2007 Opel Signum is newer by 34 year(s). Which means there will be less support and parts availability for 1973 Porsche 911. In addition, the cost of maintenance, including insurance, on 1973 Porsche 911 would be higher. At 2,958 cc (6 cylinders), 2007 Opel Signum is equipped with a bigger engine. In terms of performance, 1973 Porsche 911 (208 HP @ 6300 RPM) has 33 more horse power than 2007 Opel Signum. (175 HP @ 4000 RPM) In normal driving conditions, 1973 Porsche 911 should accelerate faster than 2007 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2007 Opel Signum weights approximately 720 kg more than 1973 Porsche 911.
Let's talk about torque, 2007 Opel Signum (370 Nm @ 1900 RPM) has 110 more torque (in Nm) than 1973 Porsche 911. (260 Nm @ 5100 RPM). This means 2007 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1973 Porsche 911.
Compare all specifications:
| 2007 Opel Signum | 1973 Porsche 911 | |
| Make | Opel | Porsche |
| Model | Signum | 911 |
| Year Released | 2007 | 1973 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2958 cc | 2687 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 175 HP | 208 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 370 Nm | 260 Nm |
| Torque RPM | 1900 RPM | 5100 RPM |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1670 kg | 950 kg |
| Vehicle Length | 4640 mm | 4110 mm |
| Vehicle Width | 1800 mm | 1660 mm |
| Vehicle Height | 1470 mm | 1330 mm |
| Wheelbase Size | 2840 mm | 2280 mm |
