This document summarizes a study that used finite element analysis to evaluate vehicle interior safety features. The study analyzed head injury criteria (HIC) from impacts of a free motion headform at various points inside a vehicle model, both with and without interior trim components. Without trim, the HIC exceeded 1000, the safety standard limit, at all impact points. With 2mm thick trim added to the pillars and side rails, the HIC was below 1000 at all points tested. The results indicate that interior trim materials are effective at reducing head accelerations and meeting safety standards during interior impacts.