1991 Citroen C 15 vs. 1972 Citroen SM
To start off, 1991 Citroen C 15 is newer by 19 year(s). Which means there will be less support and parts availability for 1972 Citroen SM. In addition, the cost of maintenance, including insurance, on 1972 Citroen SM would be higher. At 2,670 cc (6 cylinders), 1972 Citroen SM is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (158 HP @ 5500 RPM) has 84 more horse power than 1991 Citroen C 15. (74 HP @ 6200 RPM) In normal driving conditions, 1972 Citroen SM should accelerate faster than 1991 Citroen C 15. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 577 kg more than 1991 Citroen C 15. 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, 1972 Citroen SM (235 Nm @ 4000 RPM) has 126 more torque (in Nm) than 1991 Citroen C 15. (109 Nm @ 4000 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen C 15.
Compare all specifications:
| 1991 Citroen C 15 | 1972 Citroen SM | |
| Make | Citroen | Citroen |
| Model | C 15 | SM |
| Year Released | 1991 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 1360 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 74 HP | 158 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 109 Nm | 235 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 74.9 mm | 87 mm |
| Engine Stroke Size | 77 mm | 75 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 875 kg | 1452 kg |
| Vehicle Length | 4010 mm | 4900 mm |
| Vehicle Width | 1650 mm | 1850 mm |
| Vehicle Height | 1820 mm | 1330 mm |
| Wheelbase Size | 2750 mm | 2950 mm |
