1989 Citroen XM vs. 1972 Citroen SM
To start off, 1989 Citroen XM is newer by 17 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 17 more horse power than 1989 Citroen XM. (141 HP @ 4600 RPM) In normal driving conditions, 1972 Citroen SM should accelerate faster than 1989 Citroen XM. With that said, vehicle weight also plays an important factor in acceleration. 1989 Citroen XM weights approximately 48 kg more than 1972 Citroen SM.
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 10 more torque (in Nm) than 1989 Citroen XM. (225 Nm @ 2200 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1989 Citroen XM.
Compare all specifications:
| 1989 Citroen XM | 1972 Citroen SM | |
| Make | Citroen | Citroen |
| Model | XM | SM |
| Year Released | 1989 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 1905 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 141 HP | 158 HP |
| Engine RPM | 4600 RPM | 5500 RPM |
| Torque | 225 Nm | 235 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Engine Bore Size | 86 mm | 87 mm |
| Engine Stroke Size | 86 mm | 75 mm |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1500 kg | 1452 kg |
| Vehicle Length | 4970 mm | 4900 mm |
| Vehicle Width | 1800 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1330 mm |
| Wheelbase Size | 2860 mm | 2950 mm |
| Fuel Tank Capacity | 80 L | 89 L |
