2008 Citroen C4 vs. 1971 Citroen SM
To start off, 2008 Citroen C4 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 2,670 cc (6 cylinders), 1971 Citroen SM is equipped with a bigger engine. In terms of performance, 1971 Citroen SM (158 HP @ 5500 RPM) has 20 more horse power than 2008 Citroen C4. (138 HP @ 6000 RPM) In normal driving conditions, 1971 Citroen SM should accelerate faster than 2008 Citroen C4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Citroen C4 weights approximately 185 kg more than 1971 Citroen SM.
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, 1971 Citroen SM (235 Nm @ 4000 RPM) has 35 more torque (in Nm) than 2008 Citroen C4. (200 Nm @ 4000 RPM). This means 1971 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2008 Citroen C4.
Compare all specifications:
| 2008 Citroen C4 | 1971 Citroen SM | |
| Make | Citroen | Citroen |
| Model | C4 | SM |
| Year Released | 2008 | 1971 |
| Body Type | Minivan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 138 HP | 158 HP |
| Engine RPM | 6000 RPM | 5500 RPM |
| Torque | 200 Nm | 235 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 85 mm | 87 mm |
| Engine Stroke Size | 88 mm | 75 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1450 kg |
| Vehicle Length | 4590 mm | 4900 mm |
| Vehicle Width | 1840 mm | 1850 mm |
| Vehicle Height | 1630 mm | 1330 mm |
| Wheelbase Size | 2730 mm | 2950 mm |
| Fuel Tank Capacity | 60 L | 89 L |
