1971 Citroen SM vs. 2005 Peugeot 407
To start off, 2005 Peugeot 407 is newer by 34 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 2 more horse power than 2005 Peugeot 407. (156 HP @ 5650 RPM). In normal driving conditions, 1971 Citroen SM should accelerate faster than 2005 Peugeot 407. With that said, vehicle weight also plays an important factor in acceleration. 2005 Peugeot 407 weights approximately 105 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 17 more torque (in Nm) than 2005 Peugeot 407. (218 Nm @ 3900 RPM). This means 1971 Citroen SM will have an easier job in driving up hills or pulling heavy equipment than 2005 Peugeot 407.
Compare all specifications:
| 1971 Citroen SM | 2005 Peugeot 407 | |
| Make | Citroen | Peugeot |
| Model | SM | 407 |
| Year Released | 1971 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2670 cc | 2179 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 156 HP |
| Engine RPM | 5500 RPM | 5650 RPM |
| Torque | 235 Nm | 218 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Engine Bore Size | 87 mm | 86 mm |
| Engine Stroke Size | 75 mm | 96 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 1555 kg |
| Vehicle Length | 4900 mm | 4680 mm |
| Vehicle Width | 1850 mm | 1820 mm |
| Vehicle Height | 1330 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 2730 mm |
| Fuel Tank Capacity | 89 L | 66 L |
