1981 BMW 725 vs. 1973 BMW 1502
To start off, 1981 BMW 725 is newer by 8 year(s). Which means there will be less support and parts availability for 1973 BMW 1502. In addition, the cost of maintenance, including insurance, on 1973 BMW 1502 would be higher. At 2,493 cc (6 cylinders), 1981 BMW 725 is equipped with a bigger engine. In terms of performance, 1981 BMW 725 (148 HP @ 5500 RPM) has 63 more horse power than 1973 BMW 1502. (85 HP @ 5800 RPM). In normal driving conditions, 1981 BMW 725 should accelerate faster than 1973 BMW 1502.
Let's talk about torque, 1981 BMW 725 (215 Nm @ 4000 RPM) has 85 more torque (in Nm) than 1973 BMW 1502. (130 Nm @ 3500 RPM). This means 1981 BMW 725 will have an easier job in driving up hills or pulling heavy equipment than 1973 BMW 1502.
Compare all specifications:
| 1981 BMW 725 | 1973 BMW 1502 | |
| Make | BMW | BMW |
| Model | 725 | 1502 |
| Year Released | 1981 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 2493 cc | 1573 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 148 HP | 85 HP |
| Engine RPM | 5500 RPM | 5800 RPM |
| Torque | 215 Nm | 130 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 71.6 mm | 71 mm |
| Engine Compression Ratio | 9.6:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Length | 4870 mm | 4240 mm |
| Vehicle Width | 1810 mm | 1600 mm |
| Vehicle Height | 1440 mm | 1420 mm |
| Wheelbase Size | 2810 mm | 2510 mm |
