1972 BMW 520 vs. 1975 Reliant Kitten
To start off, 1975 Reliant Kitten is newer by 3 year(s). Which means there will be less support and parts availability for 1972 BMW 520. In addition, the cost of maintenance, including insurance, on 1972 BMW 520 would be higher. At 1,991 cc (6 cylinders), 1972 BMW 520 is equipped with a bigger engine. In terms of performance, 1972 BMW 520 (150 HP @ 5900 RPM) has 111 more horse power than 1975 Reliant Kitten. (39 HP @ 5500 RPM). In normal driving conditions, 1972 BMW 520 should accelerate faster than 1975 Reliant Kitten. With that said, vehicle weight also plays an important factor in acceleration. 1972 BMW 520 weights approximately 907 kg more than 1975 Reliant Kitten. 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, 1972 BMW 520 (190 Nm @ 4200 RPM) has 127 more torque (in Nm) than 1975 Reliant Kitten. (63 Nm @ 3500 RPM). This means 1972 BMW 520 will have an easier job in driving up hills or pulling heavy equipment than 1975 Reliant Kitten.
Compare all specifications:
| 1972 BMW 520 | 1975 Reliant Kitten | |
| Make | BMW | Reliant |
| Model | 520 | Kitten |
| Year Released | 1972 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 848 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 150 HP | 39 HP |
| Engine RPM | 5900 RPM | 5500 RPM |
| Torque | 190 Nm | 63 Nm |
| Torque RPM | 4200 RPM | 3500 RPM |
| Engine Bore Size | 80 mm | 62.5 mm |
| Engine Stroke Size | 66 mm | 69.1 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1445 kg | 538 kg |
| Vehicle Length | 4630 mm | 3350 mm |
| Vehicle Width | 1700 mm | 1430 mm |
| Vehicle Height | 1430 mm | 1400 mm |
| Wheelbase Size | 2770 mm | 2150 mm |
| Fuel Tank Capacity | 80 L | 27 L |
