This paper deals with experimental investigations on the failure behaviour and mechanical property of glass fiber reinforced thermoplastic components subjected to axial compression,three point bending test and tors ion test,which have been developed for bearing carrier and energy absorption in motor vehicle.Several design parameters for the different cross-section shape (semicircular,rectangular and trapeziform) of the components were investigated.In addition,by means of visual and the optical microscopy observations,the failure modes of the all the specimens were discussed and categorized under the compression test,three point bending test and torsion test.