2008 Citroen C4 vs. 1978 Renault 18
To start off, 2008 Citroen C4 is newer by 30 year(s). Which means there will be less support and parts availability for 1978 Renault 18. In addition, the cost of maintenance, including insurance, on 1978 Renault 18 would be higher. At 1,645 cc (4 cylinders), 1978 Renault 18 is equipped with a bigger engine. In terms of performance, 2008 Citroen C4 (89 HP @ 4000 RPM) has 11 more horse power than 1978 Renault 18. (78 HP @ 5000 RPM). In normal driving conditions, 2008 Citroen C4 should accelerate faster than 1978 Renault 18. With that said, vehicle weight also plays an important factor in acceleration. 2008 Citroen C4 weights approximately 360 kg more than 1978 Renault 18. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Citroen C4 (215 Nm @ 1750 RPM) has 82 more torque (in Nm) than 1978 Renault 18. (133 Nm @ 3000 RPM). This means 2008 Citroen C4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Renault 18.
Compare all specifications:
| 2008 Citroen C4 | 1978 Renault 18 | |
| Make | Citroen | Renault |
| Model | C4 | 18 |
| Year Released | 2008 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1559 cc | 1645 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 89 HP | 78 HP |
| Engine RPM | 4000 RPM | 5000 RPM |
| Torque | 215 Nm | 133 Nm |
| Torque RPM | 1750 RPM | 3000 RPM |
| Engine Bore Size | 75 mm | 81 mm |
| Engine Stroke Size | 88 mm | 83.5 mm |
| Engine Compression Ratio | 18.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 1330 kg | 970 kg |
| Vehicle Length | 4280 mm | 4390 mm |
| Vehicle Width | 1780 mm | 1710 mm |
| Vehicle Height | 1460 mm | 1410 mm |
| Wheelbase Size | 2610 mm | 2450 mm |
| Fuel Tank Capacity | 60 L | 53 L |
