To measure roof strength, a metal plate is pushed against one corner of a vehicle's
roof at a constant speed. The maximum force sustained by the roof before 5 inches
of crush is compared to the vehicle's weight to find the strength-to-weight ratio.
This is a good assessment of vehicle structural protection in rollover crashes.
Each model is rated based on our measured curb weight of a vehicle with typical
engine, transmission, and equipment options. However, when the same model is available
in a configuration over 10% heavier than the typically equipped vehicle, a separate
rating is assigned.
More about how we rate vehicle roof strength
Poor | Vehicles are listed in order of performance
©1996-2010, Insurance Institute for Highway Safety, Highway Loss Data Institute
1005 N. Glebe Road, Suite 800, Arlington, VA 22201 USA | tel 703/247-1500 | fax 703/247-1588