1972 BMW 520 vs. 1981 Renault 9
To start off, 1981 Renault 9 is newer by 9 year(s). Which means there will be less support and parts availability for 1972 BMW 520. In addition, the cost of maintenance, including insurance, on 1972 BMW 520 would be higher. At 1,991 cc (6 cylinders), 1972 BMW 520 is equipped with a bigger engine. In terms of performance, 1972 BMW 520 (150 HP @ 5900 RPM) has 103 more horse power than 1981 Renault 9. (47 HP @ 5250 RPM). In normal driving conditions, 1972 BMW 520 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 1972 BMW 520 weights approximately 625 kg more than 1981 Renault 9. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1972 BMW 520 | 1981 Renault 9 | |
| Make | BMW | Renault |
| Model | 520 | 9 |
| Year Released | 1972 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 1108 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 150 HP | 47 HP |
| Engine RPM | 5900 RPM | 5250 RPM |
| Torque RPM | 4200 RPM | 2500 RPM |
| Engine Bore Size | 80 mm | 70 mm |
| Engine Stroke Size | 66 mm | 72 mm |
| Engine Compression Ratio | 11.0:1 | 9.2:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1445 kg | 820 kg |
| Vehicle Length | 4630 mm | 4070 mm |
| Vehicle Width | 1700 mm | 1660 mm |
| Vehicle Height | 1430 mm | 1410 mm |
| Wheelbase Size | 2770 mm | 2490 mm |
| Fuel Tank Capacity | 80 L | 38 L |
