2004 Alfa Romeo 156 vs. 1973 Citroen SM
To start off, 2004 Alfa Romeo 156 is newer by 31 year(s). Which means there will be less support and parts availability for 1973 Citroen SM. In addition, the cost of maintenance, including insurance, on 1973 Citroen SM would be higher. At 2,965 cc (6 cylinders), 1973 Citroen SM is equipped with a bigger engine. In terms of performance, 1973 Citroen SM (177 HP @ 6500 RPM) has 29 more horse power than 2004 Alfa Romeo 156. (148 HP @ 4000 RPM) In normal driving conditions, 1973 Citroen SM should accelerate faster than 2004 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2004 Alfa Romeo 156 weights approximately 45 kg more than 1973 Citroen SM.
Because 2004 Alfa Romeo 156 is four wheel drive (4WD), it will have significant more traction and grip than 1973 Citroen SM. In wet, icy, snow, or gravel driving conditions, 2004 Alfa Romeo 156 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.
Compare all specifications:
| 2004 Alfa Romeo 156 | 1973 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | 156 | SM |
| Year Released | 2004 | 1973 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1910 cc | 2965 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 177 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1525 kg | 1480 kg |
| Vehicle Width | 1750 mm | 1850 mm |
| Vehicle Height | 1460 mm | 1330 mm |
| Wheelbase Size | 2600 mm | 2960 mm |
