There is a comforting myth that the dealership is the “gold standard” for repair. It feels safe. The building is huge, there’s a barista in the waiting room, and everyone wears a uniform.
European cars aren’t just “cars.” They are highly integrated computer networks on wheels. A modern Mercedes-Benz has over 80 control modules communicating on a high-speed CAN-BUS network. If a technician tries to fix an electrical issue with a generic test light and a…