1964 Alfa Romeo Spider vs. 1956 Rover P4
To start off, 1964 Alfa Romeo Spider is newer by 8 year(s). Which means there will be less support and parts availability for 1956 Rover P4. In addition, the cost of maintenance, including insurance, on 1956 Rover P4 would be higher. At 2,638 cc (6 cylinders), 1956 Rover P4 is equipped with a bigger engine. In terms of performance, 1964 Alfa Romeo Spider (163 HP @ 5900 RPM) has 55 more horse power than 1956 Rover P4. (108 HP @ 4250 RPM). In normal driving conditions, 1964 Alfa Romeo Spider should accelerate faster than 1956 Rover P4. With that said, vehicle weight also plays an important factor in acceleration. 1956 Rover P4 weights approximately 156 kg more than 1964 Alfa Romeo Spider.
Let's talk about torque, 1964 Alfa Romeo Spider (221 Nm @ 4000 RPM) has 15 more torque (in Nm) than 1956 Rover P4. (206 Nm @ 2500 RPM). This means 1964 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 1956 Rover P4.
Compare all specifications:
| 1964 Alfa Romeo Spider | 1956 Rover P4 | |
| Make | Alfa Romeo | Rover |
| Model | Spider | P4 |
| Year Released | 1964 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 2582 cc | 2638 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 163 HP | 108 HP |
| Engine RPM | 5900 RPM | 4250 RPM |
| Torque | 221 Nm | 206 Nm |
| Torque RPM | 4000 RPM | 2500 RPM |
| Engine Bore Size | 83 mm | 73 mm |
| Engine Stroke Size | 79.6 mm | 105 mm |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1330 kg | 1486 kg |
| Vehicle Length | 4510 mm | 4530 mm |
| Vehicle Width | 1610 mm | 1670 mm |
| Vehicle Height | 1390 mm | 1320 mm |
| Wheelbase Size | 2510 mm | 2830 mm |
| Fuel Tank Capacity | 100 L | 52 L |
