1971 Alfa Romeo Spider vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 35 year(s). Which means there will be less support and parts availability for 1971 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1971 Alfa Romeo Spider would be higher. At 1,962 cc (4 cylinders), 1971 Alfa Romeo Spider is equipped with a bigger engine. In terms of performance, 1971 Alfa Romeo Spider (131 HP @ 5500 RPM) has 11 more horse power than 2006 Opel Signum. (120 HP @ 6000 RPM). In normal driving conditions, 1971 Alfa Romeo Spider should accelerate faster than 2006 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 440 kg more than 1971 Alfa Romeo Spider.
Because 1971 Alfa Romeo Spider 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 1971 Alfa Romeo Spider. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 1971 Alfa Romeo Spider (190 Nm @ 3500 RPM) has 22 more torque (in Nm) than 2006 Opel Signum. (168 Nm @ 3800 RPM). This means 1971 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Signum.
Compare all specifications:
| 1971 Alfa Romeo Spider | 2006 Opel Signum | |
| Make | Alfa Romeo | Opel |
| Model | Spider | Signum |
| Year Released | 1971 | 2006 |
| Body Type | Roadster | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1962 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 131 HP | 120 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 190 Nm | 168 Nm |
| Torque RPM | 3500 RPM | 3800 RPM |
| Engine Bore Size | 84 mm | 80.5 mm |
| Engine Stroke Size | 88.5 mm | 88.2 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1040 kg | 1480 kg |
| Vehicle Length | 4130 mm | 4640 mm |
| Vehicle Width | 1640 mm | 1800 mm |
| Vehicle Height | 1300 mm | 1470 mm |
| Wheelbase Size | 2260 mm | 2840 mm |
