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In the automotive industry, crash analysis plays an important role in the virtual product development of the design of the car body. The minimization of weight and competing requirements from several load cases have to be adjusted as optimal as possible. Consequently, high safety limits cannot be kept while maintaining all requirements. Therefore, the assurance of robustness of the optimized design against unavoidable scatters of crash test constraints, production constraints and material constraints in preferably early stages of product development becomes more and more important. Therefore, numerical robustness analysis is recommended as method of stochastic analysis in virtual product development. Robustness analysis is primarily carried out to determine the variation range of significant response variables and their evaluation by using definitions of system robustness due to the unavoidable scatter of design parameters.