1956 Armstrong Siddeley Sapphire vs. 1944 Rover P2
To start off, 1956 Armstrong Siddeley Sapphire is newer by 12 year(s). Which means there will be less support and parts availability for 1944 Rover P2. In addition, the cost of maintenance, including insurance, on 1944 Rover P2 would be higher. At 2,290 cc (6 cylinders), 1956 Armstrong Siddeley Sapphire is equipped with a bigger engine. In terms of performance, 1956 Armstrong Siddeley Sapphire (118 HP @ 5000 RPM) has 71 more horse power than 1944 Rover P2. (47 HP @ 4600 RPM). In normal driving conditions, 1956 Armstrong Siddeley Sapphire should accelerate faster than 1944 Rover P2. With that said, vehicle weight also plays an important factor in acceleration. 1956 Armstrong Siddeley Sapphire weights approximately 230 kg more than 1944 Rover P2. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1956 Armstrong Siddeley Sapphire | 1944 Rover P2 | |
| Make | Armstrong Siddeley | Rover |
| Model | Sapphire | P2 |
| Year Released | 1956 | 1944 |
| Engine Size | 2290 cc | 1577 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 118 HP | 47 HP |
| Engine RPM | 5000 RPM | 4600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1650 kg | 1420 kg |
