The Hardest Restoration Ever? Rebuilding the Impossible 1970 Citroën SM (Full ASMR).

The Hardest Restoration Ever? Rebuilding the Impossible 1970 Citroën SM (Full ASMR). They said it was too complex to ever run again. Watch the full ASMR restoration of the 1970 Citroën SM, a French-Italian masterpiece featuring a Maserati V12-derived V6 and "impossible" hydraulics. In 1970, Citroën and Maserati teamed up to build the future. The SM was the result—a car with self-leveling suspension, swiveling headlights that "see" around corners, and DIRAVI steering that centers itself even when the car is off. But decades of neglect turn this "future" into a nightmare of rusted hydraulic lines and seized Italian valves. This ASMR restoration takes you into the "Labyrinth." You won't hear any talking—only the click-clack of Maserati quad-cams being adjusted, the "hiss" of high-pressure LHM (green blood) fluid returning to the spheres, and the satisfying "pop" of the 90-degree V6 firing for the first time in 40 years. We tackle the infamous "timing chain" issue and the complex wiring of the six-headlight glass nose. It’s a delicate dance of French innovation and Italian soul. Will this spaceship glide once more, or is it a riddle that should have stayed unsolved? #CitroenSM #Maserati #ASMRRestoration #ClassicCars #EngineeringMarvel

Added 4 Sept 2026