1975 BMW 520 vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 31 year(s). Which means there will be less support and parts availability for 1975 BMW 520. In addition, the cost of maintenance, including insurance, on 1975 BMW 520 would be higher. At 1,991 cc (4 cylinders), 1975 BMW 520 is equipped with a bigger engine. In terms of performance, 1975 BMW 520 (123 HP @ 5700 RPM) has 5 more horse power than 2006 Opel Signum. (118 HP @ 4000 RPM). In normal driving conditions, 1975 BMW 520 should accelerate faster than 2006 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 320 kg more than 1975 BMW 520.
Because 1975 BMW 520 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 1975 BMW 520. 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, 2006 Opel Signum (281 Nm @ 2000 RPM) has 109 more torque (in Nm) than 1975 BMW 520. (172 Nm @ 4350 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 520.
Compare all specifications:
| 1975 BMW 520 | 2006 Opel Signum | |
| Make | BMW | Opel |
| Model | 520 | Signum |
| Year Released | 1975 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 1910 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 123 HP | 118 HP |
| Engine RPM | 5700 RPM | 4000 RPM |
| Torque | 172 Nm | 281 Nm |
| Torque RPM | 4350 RPM | 2000 RPM |
| Top Speed | 175 km/hour | 191 km/hour |
| Acceleration 0-100mph | 12 seconds | 12.2 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1295 kg | 1615 kg |
| Vehicle Length | 4630 mm | 4640 mm |
| Vehicle Width | 1700 mm | 1800 mm |
| Vehicle Height | 1430 mm | 1470 mm |
| Wheelbase Size | 2640 mm | 2840 mm |
| Fuel Tank Capacity | 70 L | 60 L |
