1974 Citroen GS vs. 1973 Citroen SM
To start off, 1974 Citroen GS is newer by 1 year(s). Which means there will be less support and parts availability for 1973 Citroen SM. In addition, the cost of maintenance, including insurance, on 1973 Citroen SM would be higher. At 2,670 cc (6 cylinders), 1973 Citroen SM is equipped with a bigger engine. In terms of performance, 1973 Citroen SM (171 HP @ 5500 RPM) has 113 more horse power than 1974 Citroen GS. (58 HP @ 5750 RPM) In normal driving conditions, 1973 Citroen SM should accelerate faster than 1974 Citroen GS. With that said, vehicle weight also plays an important factor in acceleration. 1973 Citroen SM weights approximately 520 kg more than 1974 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, 1973 Citroen SM (237 Nm @ 4000 RPM) has 149 more torque (in Nm) than 1974 Citroen GS. (88 Nm @ 3250 RPM). This means 1973 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1974 Citroen GS.
Compare all specifications:
| 1974 Citroen GS | 1973 Citroen SM | |
| Make | Citroen | Citroen |
| Model | GS | SM |
| Year Released | 1974 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 1222 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | boxer | V |
| Horse Power | 58 HP | 171 HP |
| Engine RPM | 5750 RPM | 5500 RPM |
| Torque | 88 Nm | 237 Nm |
| Torque RPM | 3250 RPM | 4000 RPM |
| Engine Bore Size | 77 mm | 87 mm |
| Engine Stroke Size | 65.6 mm | 75 mm |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 930 kg | 1450 kg |
| Vehicle Length | 4130 mm | 4900 mm |
| Vehicle Width | 1610 mm | 1850 mm |
| Vehicle Height | 1360 mm | 1330 mm |
| Wheelbase Size | 2560 mm | 2960 mm |
| Fuel Tank Capacity | 43 L | 25 L |
