1956 Armstrong Siddeley Sapphire vs. 1985 Ford Sierra
To start off, 1985 Ford Sierra is newer by 29 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 2,790 cc (6 cylinders), 1985 Ford Sierra is equipped with a bigger engine. In terms of performance, 1985 Ford Sierra (148 HP @ 5700 RPM) has 63 more horse power than 1956 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM) In normal driving conditions, 1985 Ford Sierra 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 155 kg more than 1985 Ford Sierra.
Let's talk about torque, 1985 Ford Sierra (220 Nm @ 3800 RPM) has 60 more torque (in Nm) than 1956 Armstrong Siddeley Sapphire. (160 Nm @ 1750 RPM). This means 1985 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1956 Armstrong Siddeley Sapphire.
Compare all specifications:
| 1956 Armstrong Siddeley Sapphire | 1985 Ford Sierra | |
| Make | Armstrong Siddeley | Ford |
| Model | Sapphire | Sierra |
| Year Released | 1956 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 2307 cc | 2790 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 148 HP |
| Engine RPM | 4400 RPM | 5700 RPM |
| Torque | 160 Nm | 220 Nm |
| Torque RPM | 1750 RPM | 3800 RPM |
| Engine Bore Size | 70 mm | 93 mm |
| Engine Stroke Size | 100 mm | 68.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1360 kg | 1205 kg |
| Vehicle Length | 4580 mm | 4400 mm |
| Vehicle Width | 1730 mm | 1680 mm |
| Vehicle Height | 1570 mm | 1370 mm |
| Wheelbase Size | 2900 mm | 2620 mm |
