This paper deals with the durability life for the new development of the rear axle of a light commercial vehicle (LCV) which has been in the market. The test fixture has been constructed for the MTS bench tests. Simultaneously the ADAMS/View model of the rear axle has been created. The force-displacement graphs obtained from the bench tests and from the ADAMS/View simulation have been compared to each other. The fatigue tests have been performed at 2.5 g bump condition and it has been possible to simulate the low and high loads. The aim of this study has been to validate the test fixture and the test conditions.