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Results from the research projects sponsored by General Motors, Motor Vehicle Fire Research Institute and National Highway Traffic Safety Administration are discussed. In the projects, thermophysical and fire properties of engine compartment fluids and polymer parts of the vehicle were quantified. Burning behaviors of the actual vehicle parts and front and rear crashed vehicle were also examined. Penetration of flames into the passenger compartment was the most critical stage in vehicle crash fire tests. Pain, 2nd and 3rd degree burns, flashover, toxicity, and lethality followed in that order very shortly after the flame penetration. The flame penetration into the passenger compartment from the engine compartment fires in front vehicle crashes was significantly longer (10 to 24 minutes post ignition) than from gasoline pool fires under the vehicle (0.5 to 3.0 minutes post ignition).