Abstract: The application of Polypropylene (PP) is limited by its poor impact strength at low temperatures, which is frequently improved by the introduction of elastomers. However, a simultaneous decrease of stiffness of the overall blend is inevitable. In this research, PP/mPE blend was reinforced with short glass fiber (SGF). The dynamic properties of PP/mPE/SGF composites were examined by means of hysteresis measurement method with the Stepwise Load Increase Procedure and Single Load Level Procedure. The results show that PP/mPE/SGF composites have a very high dynamic modulus and dynamic load limit.