1988 Citroen AX vs. 1973 Citroen SM
To start off, 1988 Citroen AX is newer by 15 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 114 more horse power than 1988 Citroen AX. (57 HP @ 6200 RPM) In normal driving conditions, 1973 Citroen SM should accelerate faster than 1988 Citroen AX. With that said, vehicle weight also plays an important factor in acceleration. 1973 Citroen SM weights approximately 742 kg more than 1988 Citroen AX. 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 1988 Citroen AX. (88 Nm @ 3700 RPM). This means 1973 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1988 Citroen AX.
Compare all specifications:
| 1988 Citroen AX | 1973 Citroen SM | |
| Make | Citroen | Citroen |
| Model | AX | SM |
| Year Released | 1988 | 1973 |
| Body Type | Hatchback | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1124 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 57 HP | 171 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 88 Nm | 237 Nm |
| Torque RPM | 3700 RPM | 4000 RPM |
| Engine Bore Size | 72 mm | 87 mm |
| Engine Stroke Size | 69 mm | 75 mm |
| Engine Compression Ratio | 9.4:1 | 9.0:1 |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 708 kg | 1450 kg |
| Vehicle Length | 3530 mm | 4900 mm |
| Vehicle Width | 1560 mm | 1850 mm |
| Vehicle Height | 1360 mm | 1330 mm |
| Wheelbase Size | 2290 mm | 2960 mm |
| Fuel Tank Capacity | 43 L | 25 L |
