A method for producing a cladding part for vehicles with a cladding part body that forms a cladding in the mounted state. A sandwich panel is formed and extends two-dimensionally in a plane with at least one transparent thermoplastic upper layer, a prefabricated, postprocessing-free intermediate layer, and a thermoplastic base layer. The at least three-layered sandwich plate is subsequently three-dimensionally formed under the influence of heat into a sandwich element forming the cladding part body.