1974 BMW 1502 vs. 1992 Renault 21
To start off, 1992 Renault 21 is newer by 18 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 1,721 cc (4 cylinders), 1992 Renault 21 is equipped with a bigger engine. In terms of performance, 1992 Renault 21 (91 HP @ 5200 RPM) has 8 more horse power than 1974 BMW 1502. (83 HP @ 5800 RPM) In normal driving conditions, 1992 Renault 21 should accelerate faster than 1974 BMW 1502. With that said, vehicle weight also plays an important factor in acceleration. 1992 Renault 21 weights approximately 145 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, 1992 Renault 21 (138 Nm @ 3500 RPM) has 8 more torque (in Nm) than 1974 BMW 1502. (130 Nm @ 3500 RPM). This means 1992 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 1974 BMW 1502.
Compare all specifications:
| 1974 BMW 1502 | 1992 Renault 21 | |
| Make | BMW | Renault |
| Model | 1502 | 21 |
| Year Released | 1974 | 1992 |
| Engine Position | Front | Front |
| Engine Size | 1574 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 83 HP | 91 HP |
| Engine RPM | 5800 RPM | 5200 RPM |
| Torque | 130 Nm | 138 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 81 mm |
| Engine Stroke Size | 71 mm | 83.5 mm |
| Engine Compression Ratio | 8.6:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 930 kg | 1075 kg |
| Vehicle Length | 4240 mm | 4650 mm |
| Vehicle Width | 1600 mm | 1720 mm |
| Vehicle Height | 1420 mm | 1430 mm |
| Wheelbase Size | 2510 mm | 2820 mm |
