1971 Citroen SM vs. 2004 Hummer H2
To start off, 2004 Hummer H2 is newer by 33 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 5,963 cc (8 cylinders), 2004 Hummer H2 is equipped with a bigger engine. In terms of performance, 2004 Hummer H2 (316 HP) has 158 more horse power than 1971 Citroen SM. (158 HP) In normal driving conditions, 2004 Hummer H2 should accelerate faster than 1971 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2004 Hummer H2 weights approximately 1453 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 2004 Hummer H2 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, 2004 Hummer H2 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, 2004 Hummer H2 (488 Nm) has 253 more torque (in Nm) than 1971 Citroen SM. (235 Nm). This means 2004 Hummer H2 will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM. 2004 Hummer H2 has automatic transmission and 1971 Citroen SM has manual transmission. 1971 Citroen SM will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Hummer H2 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1971 Citroen SM | 2004 Hummer H2 | |
| Make | Citroen | Hummer |
| Model | SM | H2 |
| Year Released | 1971 | 2004 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 5963 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 158 HP | 316 HP |
| Torque | 235 Nm | 488 Nm |
| Engine Bore Size | 87 mm | 102 mm |
| Engine Stroke Size | 75 mm | 92 mm |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 2903 kg |
| Vehicle Length | 4900 mm | 4830 mm |
| Vehicle Width | 1850 mm | 2070 mm |
| Vehicle Height | 1330 mm | 2020 mm |
| Wheelbase Size | 2950 mm | 3130 mm |
| Fuel Tank Capacity | 89 L | 121 L |
