The Citroën D Series, encompassing models such as the DSuper, DSuper 5, DS20, DS21, DS23, ID19, and ID21, represents a significant era in automotive engineering from 1965 through 1974. These vehicles are celebrated for their avant-garde design and pioneering hydropneumatic suspension system, which provided an unparalleled level of ride comfort and self-leveling capability. With front-wheel drive, aerodynamic styling, and innovative safety features, the D Series established itself as a leader in its segment, offering a distinctive driving experience characterized by its advanced technology and exceptional engineering quality.

This workshop service repair manual provides comprehensive A-Z coverage for all models and repairs for the specified Citroën D Series vehicles. It details maintenance procedures, including regular servicing, fluid changes, and tune-ups, alongside in-depth repair instructions for mechanical and electrical systems. The manual covers the powertrain, chassis, electrical systems, and bodywork, offering step-by-step guidance with detailed diagrams to assist owners and technicians in diagnosing issues, performing adjustments, and ensuring the optimal performance and longevity of their vehicle.