1975 BMW 520 vs. 1961 Reliant Sabre Six
To start off, 1975 BMW 520 is newer by 14 year(s). Which means there will be less support and parts availability for 1961 Reliant Sabre Six. In addition, the cost of maintenance, including insurance, on 1961 Reliant Sabre Six would be higher. At 2,553 cc (6 cylinders), 1961 Reliant Sabre Six is equipped with a bigger engine. In terms of performance, 1975 BMW 520 (123 HP @ 5700 RPM) has 14 more horse power than 1961 Reliant Sabre Six. (109 HP @ 4800 RPM). In normal driving conditions, 1975 BMW 520 should accelerate faster than 1961 Reliant Sabre Six. With that said, vehicle weight also plays an important factor in acceleration. 1975 BMW 520 weights approximately 479 kg more than 1961 Reliant Sabre Six. 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, 1961 Reliant Sabre Six (186 Nm @ 2400 RPM) has 14 more torque (in Nm) than 1975 BMW 520. (172 Nm @ 4350 RPM). This means 1961 Reliant Sabre Six will have an easier job in driving up hills or pulling heavy equipment than 1975 BMW 520.
Compare all specifications:
| 1975 BMW 520 | 1961 Reliant Sabre Six | |
| Make | BMW | Reliant |
| Model | 520 | Sabre Six |
| Year Released | 1975 | 1961 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 2553 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 109 HP |
| Engine RPM | 5700 RPM | 4800 RPM |
| Torque | 172 Nm | 186 Nm |
| Torque RPM | 4350 RPM | 2400 RPM |
| Engine Compression Ratio | 9.3:1 | 8.3:1 |
| Top Speed | 175 km/hour | 179 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1295 kg | 816 kg |
| Vehicle Length | 4630 mm | 4060 mm |
| Vehicle Width | 1700 mm | 1560 mm |
| Vehicle Height | 1430 mm | 1280 mm |
| Wheelbase Size | 2640 mm | 2290 mm |
| Fuel Tank Capacity | 70 L | 38 L |
