1955 Armstrong Siddeley Sapphire vs. 1951 Austin A
To start off, 1955 Armstrong Siddeley Sapphire is newer by 4 year(s). Which means there will be less support and parts availability for 1951 Austin A. In addition, the cost of maintenance, including insurance, on 1951 Austin A would be higher. At 2,309 cc (6 cylinders), 1955 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1955 Armstrong Siddeley Sapphire (85 HP @ 4400 RPM) has 56 more horse power than 1951 Austin A. (29 HP @ 4800 RPM). In normal driving conditions, 1955 Armstrong Siddeley Sapphire should accelerate faster than 1951 Austin A. With that said, vehicle weight also plays an important factor in acceleration. 1955 Armstrong Siddeley Sapphire weights approximately 675 kg more than 1951 Austin A. 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, 1955 Armstrong Siddeley Sapphire (160 Nm @ 1750 RPM) has 106 more torque (in Nm) than 1951 Austin A. (54 Nm @ 2200 RPM). This means 1955 Armstrong Siddeley Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1951 Austin A.
Compare all specifications:
| 1955 Armstrong Siddeley Sapphire | 1951 Austin A | |
| Make | Armstrong Siddeley | Austin |
| Model | Sapphire | A |
| Year Released | 1955 | 1951 |
| Engine Position | Front | Front |
| Engine Size | 2309 cc | 803 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 85 HP | 29 HP |
| Engine RPM | 4400 RPM | 4800 RPM |
| Torque | 160 Nm | 54 Nm |
| Torque RPM | 1750 RPM | 2200 RPM |
| Engine Compression Ratio | 7.5:1 | 7.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1360 kg | 685 kg |
| Vehicle Length | 4580 mm | 3470 mm |
| Vehicle Width | 1730 mm | 1410 mm |
| Vehicle Height | 1570 mm | 1490 mm |
| Wheelbase Size | 2900 mm | 2030 mm |
