2009 Alfa Romeo 147 vs. 1972 Citroen SM
To start off, 2009 Alfa Romeo 147 is newer by 37 year(s). Which means there will be less support and parts availability for 1972 Citroen SM. In addition, the cost of maintenance, including insurance, on 1972 Citroen SM would be higher. At 2,669 cc (6 cylinders), 1972 Citroen SM is equipped with a bigger engine. In terms of performance, 1972 Citroen SM (173 HP @ 5500 RPM) has 55 more horse power than 2009 Alfa Romeo 147. (118 HP @ 4000 RPM) In normal driving conditions, 1972 Citroen SM should accelerate faster than 2009 Alfa Romeo 147. With that said, vehicle weight also plays an important factor in acceleration. 1972 Citroen SM weights approximately 100 kg more than 2009 Alfa Romeo 147. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2009 Alfa Romeo 147 (280 Nm @ 2000 RPM) has 43 more torque (in Nm) than 1972 Citroen SM. (237 Nm @ 4000 RPM). This means 2009 Alfa Romeo 147 will have an easier job in driving up hills or pulling heavy equipment than 1972 Citroen SM.
Compare all specifications:
| 2009 Alfa Romeo 147 | 1972 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | 147 | SM |
| Year Released | 2009 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2669 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 118 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 280 Nm | 237 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 87 mm |
| Engine Stroke Size | 90.4 mm | 75 mm |
| Engine Compression Ratio | 18.5:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 1350 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 | 2960 mm |
| Fuel Tank Capacity | 60 L | 25 L |
