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Improving the robustness of vehicle crashworthiness in relation to the impact angle may be quite important in enhancing vehicle safety under actual driving conditions. This importance can also be inferred from the fact that almost all of the accidents classified as frontal crashes in real-world driving have an impact angle. The first step of this research was to make clear the differences between inline offset impacts and oblique offset impacts, focusing on the behavior of the vehicle. Based on the results obtained, a feasibility study for improving the robustness of vehicle crashworthiness relative to the impact angle in frontal collisions was carried out. In order to analyze vehicle behavior and examine ways of improving robustness, oblique offset car-to-car (CTC) impact tests were conducted and simulations were run using finite element (FE) models. The method of evaluating vehicle body strength that was reported by Kitagawa et al. [7] was utilized to process the data.