2006 Alfa Romeo 147 vs. 1971 Citroen SM
To start off, 2006 Alfa Romeo 147 is newer by 35 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 44 more horse power than 2006 Alfa Romeo 147. (114 HP @ 4000 RPM) In normal driving conditions, 1971 Citroen SM should accelerate faster than 2006 Alfa Romeo 147. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 147 weights approximately 135 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, 2006 Alfa Romeo 147 (275 Nm @ 2000 RPM) has 40 more torque (in Nm) than 1971 Citroen SM. (235 Nm @ 4000 RPM). This means 2006 Alfa Romeo 147 will have an easier job in driving up hills or pulling heavy equipment than 1971 Citroen SM.
Compare all specifications:
| 2006 Alfa Romeo 147 | 1971 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | 147 | SM |
| Year Released | 2006 | 1971 |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 114 HP | 158 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 275 Nm | 235 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 87 mm |
| Engine Stroke Size | 90.4 mm | 75 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1585 kg | 1450 kg |
| Vehicle Length | 4230 mm | 4900 mm |
| Vehicle Width | 1740 mm | 1850 mm |
| Vehicle Height | 1450 mm | 1330 mm |
| Wheelbase Size | 2550 mm | 2950 mm |
| Fuel Tank Capacity | 60 L | 89 L |
