Abstract: The bumper rail plays extremely important role in the collision of vehicles. Extent of human casualties and damages to the vehicle is determined in accordance with the extent to which the bumper rail can absorb the impact when the vehicle is involved in head-on collision. In this study, a total of five different bumper rail models are designed for each of the configurations by making reference to the commercially available bumper rails on the basis of the aforementioned function of the bumper rail. Simulated structural analysis was then executed to assess and research the durability and mechanical characteristic of each of the bumper rail models. In this study, a total of five types of bumper rail models for each of configurations were 3D modeled with CATIA design program by making reference to the commercially available bumper rails and simulated structural analysis on these models was executed. After having designed 3D bumper rail models for each of the configurations, it was possible to confirm the durability and mechanical characteristic of each of the bumper rail models by executing simulated structural analysis. As the result of this study, bumper rail model 5 is deemed to have the best durability with the higher maximum stress in comparison to other bumper rail models. Moreover, this model 5 is determined to be most appropriate for application to vehicles as it displayed the largest maximum deformation indicating the best ability to absorb the impact imparted at the time of collision of the vehicle, although, deformation and damages due to deformation under load above the prescribed level could occur. This study is on the research of the durability and mechanical characteristics of bumper rails used in automobiles. It is deemed that data obtained through the corresponding research can be utilized as the basic data for more advanced designing of and researches related to bumper rail.