1974 BMW 1502 vs. 1979 BMW 633
To start off, 1979 BMW 633 is newer by 5 year(s). Which means there will be less support and parts availability for 1974 BMW 1502. In addition, the cost of maintenance, including insurance, on 1974 BMW 1502 would be higher. At 3,210 cc (6 cylinders), 1979 BMW 633 is equipped with a bigger engine. In terms of performance, 1979 BMW 633 (194 HP @ 5500 RPM) has 111 more horse power than 1974 BMW 1502. (83 HP @ 5800 RPM) In normal driving conditions, 1979 BMW 633 should accelerate faster than 1974 BMW 1502. With that said, vehicle weight also plays an important factor in acceleration. 1979 BMW 633 weights approximately 540 kg more than 1974 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, 1979 BMW 633 (285 Nm @ 4300 RPM) has 155 more torque (in Nm) than 1974 BMW 1502. (130 Nm @ 3500 RPM). This means 1979 BMW 633 will have an easier job in driving up hills or pulling heavy equipment than 1974 BMW 1502.
Compare all specifications:
| 1974 BMW 1502 | 1979 BMW 633 | |
| Make | BMW | BMW |
| Model | 1502 | 633 |
| Year Released | 1974 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 1574 cc | 3210 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 83 HP | 194 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 130 Nm | 285 Nm |
| Torque RPM | 3500 RPM | 4300 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 71 mm | 86 mm |
| Engine Compression Ratio | 8.6:1 | 9.3:1 |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 930 kg | 1470 kg |
| Vehicle Length | 4240 mm | 4760 mm |
| Vehicle Width | 1600 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1390 mm |
| Wheelbase Size | 2510 mm | 2640 mm |
| Fuel Tank Capacity | 50 L | 70 L |
