This paper presents a new platform integrating expert knowledge and different software products in an optimization loop, to optimize the design of mechatronic components in the project lifecycle management (PLM). These components are part of an automotive product and they contain different parts constituted by different materials. All providers of the automotive market use these components. The O2M two-years project involving different partners developed the platform, which has been tested in an industrial environment and now available on line. The platform allows to store, retrieve and share all the information about the design process of mechatronic components and optimize the PLM.