Sponsors An Idiot Abroad. A Bit Much For Some. New Citroen DS4. Creative Technologie. Citroën is a major French automobile manufacturer, part of the PSA Peugeot Citroën group. Founded in 1919 by André-Gustave Citroën, Citroën was the first mass-production car company outside of the USA and pioneered the modern concept of creating a sales and services network that complements the motor car.