1973 BMW 1502 vs. 1956 Rover P4
To start off, 1973 BMW 1502 is newer by 17 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 2,636 cc (6 cylinders), 1956 Rover P4 is equipped with a bigger engine. In terms of performance, 1956 Rover P4 (108 HP @ 4250 RPM) has 23 more horse power than 1973 BMW 1502. (85 HP @ 5800 RPM) In normal driving conditions, 1956 Rover P4 should accelerate faster than 1973 BMW 1502. With that said, vehicle weight also plays an important factor in acceleration. 1956 Rover P4 weights approximately 518 kg more than 1973 BMW 1502. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1956 Rover P4 (206 Nm @ 2500 RPM) has 76 more torque (in Nm) than 1973 BMW 1502. (130 Nm @ 3500 RPM). This means 1956 Rover P4 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW 1502.
Compare all specifications:
| 1973 BMW 1502 | 1956 Rover P4 | |
| Make | BMW | Rover |
| Model | 1502 | P4 |
| Year Released | 1973 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 1573 cc | 2636 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 85 HP | 108 HP |
| Engine RPM | 5800 RPM | 4250 RPM |
| Torque | 130 Nm | 206 Nm |
| Torque RPM | 3500 RPM | 2500 RPM |
| Engine Bore Size | 84 mm | 73 mm |
| Engine Stroke Size | 71 mm | 105 mm |
| Engine Compression Ratio | 8.6:1 | 8.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1448 kg |
| Vehicle Length | 4240 mm | 4530 mm |
| Vehicle Width | 1600 mm | 1670 mm |
| Vehicle Height | 1420 mm | 1320 mm |
| Wheelbase Size | 2510 mm | 2830 mm |
| Fuel Tank Capacity | 50 L | 52 L |
