1972 Citroen SM vs. 2009 Daihatsu Sirion
To start off, 2009 Daihatsu Sirion is newer by 37 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 89 more horse power than 2009 Daihatsu Sirion. (69 HP @ 6000 RPM). In normal driving conditions, 1972 Citroen SM should accelerate faster than 2009 Daihatsu Sirion. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 562 kg more than 2009 Daihatsu Sirion. 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 141 more torque (in Nm) than 2009 Daihatsu Sirion. (94 Nm @ 3600 RPM). This means 1972 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2009 Daihatsu Sirion.
Compare all specifications:
| 1972 Citroen SM | 2009 Daihatsu Sirion | |
| Make | Citroen | Daihatsu |
| Model | SM | Sirion |
| Year Released | 1972 | 2009 |
| Body Type | Coupe | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 998 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 69 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 235 Nm | 94 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Engine Bore Size | 87 mm | 71.1 mm |
| Engine Stroke Size | 75 mm | 84 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1452 kg | 890 kg |
| Vehicle Length | 4900 mm | 3610 mm |
| Vehicle Width | 1850 mm | 1670 mm |
| Vehicle Height | 1330 mm | 1560 mm |
| Wheelbase Size | 2950 mm | 2440 mm |
| Fuel Tank Capacity | 89 L | 40 L |
