1985 Renault 18 vs. 1981 Renault 9
To start off, 1985 Renault 18 is newer by 4 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 1,995 cc (4 cylinders), 1985 Renault 18 is equipped with a bigger engine. In terms of performance, 1985 Renault 18 (104 HP @ 5500 RPM) has 19 more horse power than 1981 Renault 9. (85 HP @ 5000 RPM). In normal driving conditions, 1985 Renault 18 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 1985 Renault 18 weights approximately 229 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, 1985 Renault 18 (163 Nm @ 3250 RPM) has 24 more torque (in Nm) than 1981 Renault 9. (139 Nm @ 3250 RPM). This means 1985 Renault 18 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 1985 Renault 18 | 1981 Renault 9 | |
| Make | Renault | Renault |
| Model | 18 | 9 |
| Year Released | 1985 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 104 HP | 85 HP |
| Engine RPM | 5500 RPM | 5000 RPM |
| Torque | 163 Nm | 139 Nm |
| Torque RPM | 3250 RPM | 3250 RPM |
| Engine Bore Size | 88 mm | 81 mm |
| Engine Stroke Size | 82 mm | 83.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1135 kg | 906 kg |
| Vehicle Length | 4470 mm | 4070 mm |
| Vehicle Width | 1710 mm | 1660 mm |
| Vehicle Height | 1410 mm | 1410 mm |
