2007 Citroen C4 vs. 1981 Renault 9
To start off, 2007 Citroen C4 is newer by 26 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 1,747 cc (4 cylinders), 2007 Citroen C4 is equipped with a bigger engine. In terms of performance, 2007 Citroen C4 (123 HP @ 6000 RPM) has 69 more horse power than 1981 Renault 9. (54 HP @ 4800 RPM). In normal driving conditions, 2007 Citroen C4 should accelerate faster than 1981 Renault 9. With that said, vehicle weight also plays an important factor in acceleration. 2007 Citroen C4 weights approximately 670 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, 2007 Citroen C4 (170 Nm @ 3750 RPM) has 66 more torque (in Nm) than 1981 Renault 9. (104 Nm @ 2250 RPM). This means 2007 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 1981 Renault 9.
Compare all specifications:
| 2007 Citroen C4 | 1981 Renault 9 | |
| Make | Citroen | Renault |
| Model | C4 | 9 |
| Year Released | 2007 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 1595 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 54 HP |
| Engine RPM | 6000 RPM | 4800 RPM |
| Torque | 170 Nm | 104 Nm |
| Torque RPM | 3750 RPM | 2250 RPM |
| Engine Bore Size | 82.7 mm | 78 mm |
| Engine Stroke Size | 81.4 mm | 83.5 mm |
| Engine Compression Ratio | 11.0:1 | 22.5:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1585 kg | 915 kg |
| Vehicle Length | 4280 mm | 4070 mm |
| Vehicle Width | 1840 mm | 1660 mm |
| Vehicle Height | 1630 mm | 1410 mm |
| Wheelbase Size | 2730 mm | 2490 mm |
| Fuel Tank Capacity | 60 L | 38 L |
