1971 Citroen SM vs. 1983 Hummer H1
To start off, 1983 Hummer H1 is newer by 12 year(s). Which means there will be less support and parts availability for 1971 Citroen SM. In addition, the cost of maintenance, including insurance, on 1971 Citroen SM would be higher. At 5,733 cc (8 cylinders), 1983 Hummer H1 is equipped with a bigger engine. In terms of performance, 1983 Hummer H1 (187 HP @ 4000 RPM) has 29 more horse power than 1971 Citroen SM. (158 HP @ 5500 RPM) In normal driving conditions, 1983 Hummer H1 should accelerate faster than 1971 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 1983 Hummer H1 weights approximately 1320 kg more than 1971 Citroen SM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1983 Hummer H1 is four wheel drive (4WD), it will have significant more traction and grip than 1971 Citroen SM. In wet, icy, snow, or gravel driving conditions, 1983 Hummer H1 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, 1983 Hummer H1 (407 Nm @ 2400 RPM) has 172 more torque (in Nm) than 1971 Citroen SM. (235 Nm @ 4000 RPM). This means 1983 Hummer H1 will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM.
Compare all specifications:
| 1971 Citroen SM | 1983 Hummer H1 | |
| Make | Citroen | Hummer |
| Model | SM | H1 |
| Year Released | 1971 | 1983 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 5733 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | in-line |
| Horse Power | 158 HP | 187 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 235 Nm | 407 Nm |
| Torque RPM | 4000 RPM | 2400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Vehicle Weight | 1450 kg | 2770 kg |
| Vehicle Length | 4900 mm | 4690 mm |
| Vehicle Width | 1850 mm | 2200 mm |
| Vehicle Height | 1330 mm | 1840 mm |
| Wheelbase Size | 2950 mm | 3310 mm |
