1989 Alfa Romeo SZ vs. 1955 Armstrong Siddeley Sapphire
To start off, 1989 Alfa Romeo SZ is newer by 34 year(s). Which means there will be less support and parts availability for 1955 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1955 Armstrong Siddeley Sapphire would be higher. At 3,435 cc (6 cylinders), 1955 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1989 Alfa Romeo SZ (208 HP @ 6200 RPM) has 83 more horse power than 1955 Armstrong Siddeley Sapphire. (125 HP @ 4700 RPM). In normal driving conditions, 1989 Alfa Romeo SZ should accelerate faster than 1955 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1955 Armstrong Siddeley Sapphire weights approximately 570 kg more than 1989 Alfa Romeo SZ.
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 (247 Nm @ 2000 RPM) has 2 more torque (in Nm) than 1989 Alfa Romeo SZ. (245 Nm @ 4500 RPM). This means 1955 Armstrong Siddeley Sapphire will have an easier job in driving up hills or pulling heavy equipment than 1989 Alfa Romeo SZ.
Compare all specifications:
| 1989 Alfa Romeo SZ | 1955 Armstrong Siddeley Sapphire | |
| Make | Alfa Romeo | Armstrong Siddeley |
| Model | SZ | Sapphire |
| Year Released | 1989 | 1955 |
| Engine Position | Front | Front |
| Engine Size | 2957 cc | 3435 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 208 HP | 125 HP |
| Engine RPM | 6200 RPM | 4700 RPM |
| Torque | 245 Nm | 247 Nm |
| Torque RPM | 4500 RPM | 2000 RPM |
| Engine Bore Size | 93 mm | 90 mm |
| Engine Stroke Size | 72.6 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 7.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 7 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1260 kg | 1830 kg |
| Vehicle Length | 4070 mm | 5390 mm |
| Vehicle Width | 1740 mm | 1840 mm |
| Vehicle Height | 1320 mm | 1680 mm |
| Wheelbase Size | 2520 mm | 3380 mm |
| Fuel Tank Capacity | 50 L | 72 L |
