The first Citroën DS introduced was the DS19. This initial model went through ugrades in 1965 and was known as the DS19A. The DS19A was renamed the DS20, and began production in 1968. The DS20 became the base model for the DS range, and was powered by a 2.0L inline four engine. While other variants recieved fuel injection later in their lives, the DS20 remained a carbureted car until the end of production in 1975.