1972 Citroen SM vs. 1973 Mazda 929
To start off, 1973 Mazda 929 is newer by 1 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 2,669 cc (6 cylinders), 1972 Citroen SM is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (173 HP @ 5500 RPM) has 90 more horse power than 1973 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 1972 Citroen SM should accelerate faster than 1973 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 380 kg more than 1973 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1972 Citroen SM (237 Nm @ 4000 RPM) has 103 more torque (in Nm) than 1973 Mazda 929. (134 Nm @ 3000 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 1973 Mazda 929.
Compare all specifications:
| 1972 Citroen SM | 1973 Mazda 929 | |
| Make | Citroen | Mazda |
| Model | SM | 929 |
| Year Released | 1972 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 2669 cc | 1769 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 173 HP | 83 HP |
| Engine RPM | 5500 RPM | 5000 RPM |
| Torque | 237 Nm | 134 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 87 mm | 80 mm |
| Engine Stroke Size | 75 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1070 kg |
| Vehicle Length | 4900 mm | 4410 mm |
| Vehicle Width | 1850 mm | 1670 mm |
| Vehicle Height | 1330 mm | 1420 mm |
| Wheelbase Size | 2960 mm | 2520 mm |
| Fuel Tank Capacity | 25 L | 55 L |
