In the early stages of the vehicle development basic decision for the future vehicle concepts are made. Anyhow not all information for a confirmed decision, especially in the field of tolerance management, is available at that time. Known methods to estimate the impact on the final product normally require determined concepts and nearly completed parts and are thus not feasible to find new solutions. One solution to overcome this problem is the consequent use of design methodology. Combined with tolerance aspects the result of the process is a robust concept for all following process steps.