1971 Citroen SM vs. 2008 Porsche Cayenne
To start off, 2008 Porsche Cayenne is newer by 37 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 3,598 cc (6 cylinders), 2008 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2008 Porsche Cayenne (287 HP @ 6200 RPM) has 129 more horse power than 1971 Citroen SM. (158 HP @ 5500 RPM) In normal driving conditions, 2008 Porsche Cayenne should accelerate faster than 1971 Citroen SM. With that said, vehicle weight also plays an important factor in acceleration. 2008 Porsche Cayenne weights approximately 710 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 2008 Porsche Cayenne 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, 2008 Porsche Cayenne 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, 2008 Porsche Cayenne (385 Nm @ 3000 RPM) has 150 more torque (in Nm) than 1971 Citroen SM. (235 Nm @ 4000 RPM). This means 2008 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM.
Compare all specifications:
| 1971 Citroen SM | 2008 Porsche Cayenne | |
| Make | Citroen | Porsche |
| Model | SM | Cayenne |
| Year Released | 1971 | 2008 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 3598 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 287 HP |
| Engine RPM | 5500 RPM | 6200 RPM |
| Torque | 235 Nm | 385 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 87 mm | 89 mm |
| Engine Stroke Size | 75 mm | 96.4 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1450 kg | 2160 kg |
| Vehicle Length | 4900 mm | 4800 mm |
| Vehicle Width | 1850 mm | 1930 mm |
| Vehicle Height | 1330 mm | 1710 mm |
| Wheelbase Size | 2950 mm | 2860 mm |
| Fuel Tank Capacity | 89 L | 100 L |
