1986 Renault 21 vs. 1981 Renault 9
To start off, 1986 Renault 21 is newer by 5 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 1,870 cc (4 cylinders), 1986 Renault 21 is equipped with a bigger engine. In terms of performance, 1986 Renault 21 (64 HP @ 4500 RPM) has 10 more horse power than 1981 Renault 9. (54 HP @ 4800 RPM). In normal driving conditions, 1986 Renault 21 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 1986 Renault 21 weights approximately 135 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, 1986 Renault 21 (118 Nm @ 2250 RPM) has 14 more torque (in Nm) than 1981 Renault 9. (104 Nm @ 2250 RPM). This means 1986 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 1986 Renault 21 | 1981 Renault 9 | |
| Make | Renault | Renault |
| Model | 21 | 9 |
| Year Released | 1986 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1870 cc | 1595 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 64 HP | 54 HP |
| Engine RPM | 4500 RPM | 4800 RPM |
| Torque | 118 Nm | 104 Nm |
| Torque RPM | 2250 RPM | 2250 RPM |
| Engine Bore Size | 80 mm | 78 mm |
| Engine Stroke Size | 93 mm | 83.5 mm |
| Engine Compression Ratio | 21.5:1 | 22.5:1 |
| Fuel Type | Diesel | Diesel |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1050 kg | 915 kg |
| Vehicle Length | 4540 mm | 4070 mm |
| Vehicle Width | 1730 mm | 1660 mm |
| Vehicle Height | 1430 mm | 1410 mm |
| Wheelbase Size | 2670 mm | 2490 mm |
