A test series was conducted with a moving deformable barrier similar to the FMVSS 214 (Federal Motor Vehicle Safety Standard 214) barrier impacting the rear of the subject vehicle in a partial overlap configuration to evaluate fuel system integrity. The tests were conducted in two phases. The first phase examined rear impact test configuration differences such as overlap, speed and alignment; the second phase examined the performance of various vehicles using a consistent test protocol based on the first phase of testing and crash data analysis. This paper presents the results of these fuel system integrity tests.