1981 BMW 520 vs. 1970 Opel Kadett
To start off, 1981 BMW 520 is newer by 11 year(s). Which means there will be less support and parts availability for 1970 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1970 Opel Kadett would be higher. At 1,991 cc (6 cylinders), 1981 BMW 520 is equipped with a bigger engine. In terms of performance, 1981 BMW 520 (123 HP @ 5800 RPM) has 79 more horse power than 1970 Opel Kadett. (44 HP @ 5000 RPM). In normal driving conditions, 1981 BMW 520 should accelerate faster than 1970 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 520 weights approximately 465 kg more than 1970 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1981 BMW 520 (170 Nm @ 4000 RPM) has 94 more torque (in Nm) than 1970 Opel Kadett. (76 Nm @ 2800 RPM). This means 1981 BMW 520 will have an easier job in driving up hills or pulling heavy equipment than 1970 Opel Kadett.
Compare all specifications:
| 1981 BMW 520 | 1970 Opel Kadett | |
| Make | BMW | Opel |
| Model | 520 | Kadett |
| Year Released | 1981 | 1970 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 1078 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 44 HP |
| Engine RPM | 5800 RPM | 5000 RPM |
| Torque | 170 Nm | 76 Nm |
| Torque RPM | 4000 RPM | 2800 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1220 kg | 755 kg |
| Vehicle Length | 4630 mm | 4190 mm |
| Vehicle Width | 1710 mm | 1580 mm |
| Vehicle Height | 1430 mm | 1410 mm |
| Wheelbase Size | 2630 mm | 2420 mm |
