The main project aims at the creation of a complete parametric vehicle model in the early development phase of a new electric car. The tool needs some inputs that can be requirements given by manufacturer, performance targets, type of vehicle…but it also needs many other factors and models that cannot be defined by users but they are necessary to obtain the different structures. These necessary parameters are obtained in a pre-processing phase that is the core of the developed work. The pre-processing phase that has been developed, has the objective to completely automatize the process, reducing manual errors and maintaining an actualized structure.