1987 BMW 730 vs. 1981 Renault 9
To start off, 1987 BMW 730 is newer by 6 year(s). Which means there will be less support and parts availability for 1981 Renault 9. In addition, the cost of maintenance, including insurance, on 1981 Renault 9 would be higher. At 2,986 cc (6 cylinders), 1987 BMW 730 is equipped with a bigger engine. In terms of performance, 1987 BMW 730 (181 HP @ 5800 RPM) has 96 more horse power than 1981 Renault 9. (85 HP @ 5000 RPM). In normal driving conditions, 1987 BMW 730 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 1987 BMW 730 weights approximately 696 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.
Let's talk about torque, 1987 BMW 730 (260 Nm @ 4000 RPM) has 121 more torque (in Nm) than 1981 Renault 9. (139 Nm @ 3250 RPM). This means 1987 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 1987 BMW 730 | 1981 Renault 9 | |
| Make | BMW | Renault |
| Model | 730 | 9 |
| Year Released | 1987 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 2986 cc | 1721 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 181 HP | 85 HP |
| Engine RPM | 5800 RPM | 5000 RPM |
| Torque | 260 Nm | 139 Nm |
| Torque RPM | 4000 RPM | 3250 RPM |
| Engine Bore Size | 89 mm | 81 mm |
| Engine Stroke Size | 80 mm | 83.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1602 kg | 906 kg |
| Vehicle Length | 4920 mm | 4070 mm |
| Vehicle Width | 1850 mm | 1660 mm |
| Vehicle Height | 1420 mm | 1410 mm |
| Wheelbase Size | 2840 mm | 2490 mm |
