1968 Alfa Romeo Spider vs. 1973 Citroen SM
To start off, 1973 Citroen SM is newer by 5 year(s). Which means there will be less support and parts availability for 1968 Alfa Romeo Spider. In addition, the cost of maintenance, including insurance, on 1968 Alfa Romeo Spider 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 14 more horse power than 1968 Alfa Romeo Spider. (163 HP @ 5900 RPM) In normal driving conditions, 1973 Citroen SM should accelerate faster than 1968 Alfa Romeo Spider. With that said, vehicle weight also plays an important factor in acceleration. 1973 Citroen SM weights approximately 150 kg more than 1968 Alfa Romeo Spider. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1968 Alfa Romeo Spider | 1973 Citroen SM | |
| Make | Alfa Romeo | Citroen |
| Model | Spider | SM |
| Year Released | 1968 | 1973 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2580 cc | 2965 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 163 HP | 177 HP |
| Engine RPM | 5900 RPM | 6500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1330 kg | 1480 kg |
| Vehicle Length | 4510 mm | 4900 mm |
| Vehicle Width | 1610 mm | 1850 mm |
| Vehicle Height | 1390 mm | 1330 mm |
| Wheelbase Size | 2510 mm | 2960 mm |
