1977 Citroen GS vs. 1993 Renault 21
To start off, 1993 Renault 21 is newer by 16 year(s). Which means there will be less support and parts availability for 1977 Citroen GS. In addition, the cost of maintenance, including insurance, on 1977 Citroen GS would be higher. At 1,721 cc (4 cylinders), 1993 Renault 21 is equipped with a bigger engine. In terms of performance, 1993 Renault 21 (75 HP @ 5000 RPM) has 20 more horse power than 1977 Citroen GS. (55 HP @ 6500 RPM) In normal driving conditions, 1993 Renault 21 should accelerate faster than 1977 Citroen GS. With that said, vehicle weight also plays an important factor in acceleration. 1993 Renault 21 weights approximately 130 kg more than 1977 Citroen GS. 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, 1993 Renault 21 (129 Nm @ 3250 RPM) has 57 more torque (in Nm) than 1977 Citroen GS. (72 Nm @ 3500 RPM). This means 1993 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 1977 Citroen GS.
Compare all specifications:
| 1977 Citroen GS | 1993 Renault 21 | |
| Make | Citroen | Renault |
| Model | GS | 21 |
| Year Released | 1977 | 1993 |
| Engine Position | Front | Front |
| Engine Size | 1015 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 55 HP | 75 HP |
| Engine RPM | 6500 RPM | 5000 RPM |
| Torque | 72 Nm | 129 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Bore Size | 74 mm | 81 mm |
| Engine Stroke Size | 59 mm | 83.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 890 kg | 1020 kg |
| Vehicle Length | 4130 mm | 4650 mm |
| Vehicle Width | 1620 mm | 1720 mm |
| Vehicle Height | 1360 mm | 1430 mm |
| Wheelbase Size | 2560 mm | 2820 mm |
