14. Citroen DS
Citroen has made over 1.5 million of those fantastic, highly advanced sedans with its self-leveling hydropneumatic suspension and front-wheel drive. Thanks to the futuristic interior, aerodynamic design, aluminum hood, and plastic roof, the Citroen DS was an enormous success.
They also sold the DS in America where people thought it was a technical marvel, so it had modest success on the market. But despite all the advantages of its basic design, the Citroen had problems with its underpowered four-cylinder engines and complicated mechanics, so the U.S. sales were reserved.