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 1,595 cc (4 cylinders), 1981 Renault 9 is equipped with a bigger engine. In terms of performance, 2009 Citroen C4 (108 HP) has 54 more horse power than 1981 Renault 9. (54 HP). 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 360 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 (147 Nm @ 4000 RPM) has 43 more torque (in Nm) than 1981 Renault 9. (104 Nm @ 2250 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 | 1587 cc | 1595 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 108 HP | 54 HP |
| Torque | 147 Nm | 104 Nm |
| Torque RPM | 4000 RPM | 2250 RPM |
| Engine Bore Size | 78.5 mm | 78 mm |
| Engine Stroke Size | 82 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 | 3 doors | 4 doors |
| Vehicle Weight | 1275 kg | 915 kg |
| Vehicle Length | 4280 mm | 4070 mm |
| Vehicle Width | 1780 mm | 1660 mm |
| Vehicle Height | 1460 mm | 1410 mm |
| Wheelbase Size | 2610 mm | 2490 mm |
| Fuel Tank Capacity | 60 L | 38 L |
