1960 AC Greyhound vs. 1957 Armstrong Siddeley Sapphire
To start off, 1960 AC Greyhound is newer by 3 year(s). Which means there will be less support and parts availability for 1957 Armstrong Siddeley Sapphire. In addition, the cost of maintenance, including insurance, on 1957 Armstrong Siddeley Sapphire would be higher. At 2,309 cc (6 cylinders), 1957 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1960 AC Greyhound (123 HP @ 5750 RPM) has 38 more horse power than 1957 Armstrong Siddeley Sapphire. (85 HP @ 4400 RPM). In normal driving conditions, 1960 AC Greyhound should accelerate faster than 1957 Armstrong Siddeley Sapphire. With that said, vehicle weight also plays an important factor in acceleration. 1957 Armstrong Siddeley Sapphire weights approximately 345 kg more than 1960 AC Greyhound.
Compare all specifications:
| 1960 AC Greyhound | 1957 Armstrong Siddeley Sapphire | |
| Make | AC | Armstrong Siddeley |
| Model | Greyhound | Sapphire |
| Year Released | 1960 | 1957 |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 2309 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 123 HP | 85 HP |
| Engine RPM | 5750 RPM | 4400 RPM |
| Engine Bore Size | 66 mm | 70 mm |
| Engine Stroke Size | 96 mm | 100 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1015 kg | 1360 kg |
| Vehicle Length | 4580 mm | 4580 mm |
| Vehicle Width | 1670 mm | 1750 mm |
| Vehicle Height | 1340 mm | 1570 mm |
| Wheelbase Size | 2550 mm | 2900 mm |
| Fuel Tank Capacity | 54 L | 72 L |
