2009 Citroen C4 vs. 1981 Renault 9
To start off, 2009 Citroen C4 is newer by 28 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 1,996 cc (4 cylinders), 2009 Citroen C4 is equipped with a bigger engine. In terms of performance, 2009 Citroen C4 (141 HP @ 6000 RPM) has 56 more horse power than 1981 Renault 9. (85 HP @ 5000 RPM). In normal driving conditions, 2009 Citroen C4 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 2009 Citroen C4 weights approximately 680 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, 2009 Citroen C4 (200 Nm @ 4000 RPM) has 61 more torque (in Nm) than 1981 Renault 9. (139 Nm @ 3250 RPM). This means 2009 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 2009 Citroen C4 | 1981 Renault 9 | |
| Make | Citroen | Renault |
| Model | C4 | 9 |
| Year Released | 2009 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1996 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 141 HP | 85 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 200 Nm | 139 Nm |
| Torque RPM | 4000 RPM | 3250 RPM |
| Engine Bore Size | 85 mm | 81 mm |
| Engine Stroke Size | 88 mm | 83.5 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Vehicle Weight | 1586 kg | 906 kg |
| Vehicle Length | 4480 mm | 4070 mm |
| Vehicle Width | 2110 mm | 1660 mm |
| Vehicle Height | 1690 mm | 1410 mm |
| Wheelbase Size | 2730 mm | 2490 mm |
