1973 Citroen SM vs. 2009 Hummer H3
To start off, 2009 Hummer H3 is newer by 36 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 5,300 cc (8 cylinders), 2009 Hummer H3 is equipped with a bigger engine. In terms of performance, 2009 Hummer H3 (300 HP @ 5200 RPM) has 129 more horse power than 1973 Citroen SM. (171 HP @ 5500 RPM) In normal driving conditions, 2009 Hummer H3 should accelerate faster than 1973 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2009 Hummer H3 weights approximately 744 kg more than 1973 Citroen SM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Hummer H3 is four wheel drive (4WD), it will have significant more traction and grip than 1973 Citroen SM. In wet, icy, snow, or gravel driving conditions, 2009 Hummer H3 will offer significantly more control. 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, 2009 Hummer H3 (434 Nm @ 4000 RPM) has 197 more torque (in Nm) than 1973 Citroen SM. (237 Nm @ 4000 RPM). This means 2009 Hummer H3 will have an easier job in driving up hills or pulling heavy equipment than 1973 Citroen SM.
Compare all specifications:
| 1973 Citroen SM | 2009 Hummer H3 | |
| Make | Citroen | Hummer |
| Model | SM | H3 |
| Year Released | 1973 | 2009 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 5300 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 171 HP | 300 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 237 Nm | 434 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 2194 kg |
| Vehicle Length | 4900 mm | 4770 mm |
| Vehicle Width | 1850 mm | 2170 mm |
| Vehicle Height | 1330 mm | 1870 mm |
| Wheelbase Size | 2960 mm | 2850 mm |
| Fuel Tank Capacity | 25 L | 87 L |
