1956 Armstrong Siddeley Sapphire vs. 1974 BMW 518
To start off, 1974 BMW 518 is newer by 18 year(s). Which means there will be less support and parts availability for 1956 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1956 Armstrong Siddeley Sapphire would be higher. At 2,307 cc (6 cylinders), 1956 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1974 BMW 518 (90 HP @ 5500 RPM) has 5 more horse power than 1956 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 1974 BMW 518 should accelerate faster than 1956 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1956 Armstrong Siddeley Sapphire weights approximately 120 kg more than 1974 BMW 518.
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, 1956 Armstrong Siddeley Sapphire (160 Nm @ 1750 RPM) has 14 more torque (in Nm) than 1974 BMW 518. (146 Nm @ 3500 RPM). This means 1956 Armstrong Siddeley Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1974 BMW 518.
Compare all specifications:
| 1956 Armstrong Siddeley Sapphire | 1974 BMW 518 | |
| Make | Armstrong Siddeley | BMW |
| Model | Sapphire | 518 |
| Year Released | 1956 | 1974 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2307 cc | 1766 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 90 HP |
| Engine RPM | 4400 RPM | 5500 RPM |
| Torque | 160 Nm | 146 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Compression Ratio | 7.5:1 | 8.3:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1240 kg |
| Vehicle Length | 4580 mm | 4630 mm |
| Vehicle Width | 1730 mm | 1700 mm |
| Vehicle Height | 1570 mm | 1430 mm |
| Wheelbase Size | 2900 mm | 2650 mm |
