The Citroën XM, produced from 1989 to 2000 under the chassis code Y4, represents a significant chapter in automotive engineering, particularly within the large family and executive car segments. This model is distinguished by its avant-garde design and Citroën's signature hydropneumatic suspension, known as Hydractive, which provided unparalleled ride comfort and adjustable ride height. Available with a range of four-cylinder and V6 petrol and diesel engines, the XM offered a blend of innovative technology for its era, including Anti-lock Braking System (ABS) and advanced climate control, positioning it as a unique competitor against established luxury brands. Its aerodynamic styling and commitment to comfort underscored Citroën's legacy of pushing automotive boundaries.

This comprehensive Service and Repair Manual in English is designed to be an indispensable resource for maintaining and repairing the Citroën XM (Y4 chassis). It covers all essential systems, including the powertrain, transmission, complex hydropneumatic suspension, braking system, and electrical components, as well as bodywork and interior. Detailed procedures for scheduled maintenance, component overhaul, and diagnostic troubleshooting are provided, supported by technical specifications and fluid requirements. This manual aims to empower owners, technicians, and mechanics with the knowledge necessary to ensure the continued optimal performance, reliability, and longevity of their XM vehicles.