Rollover evaluations

Large family cars

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

Good   Acceptable   Marginal   Poor   |   Vehicles are listed in order of performance

Model	Overall rating	Curb weight (lb)	Peak force (lb)	Strength-to-weight ratio
Dodge Charger Chrysler 300 2011-13 models		4,054	21,762	5.37
Toyota Avalon 2013 models		3,426	17,900	5.22
Buick Regal 2011-13 models		3,614	17,968	4.97
Buick LaCrosse 2010-13 models		3,998	19,571	4.90
Hyundai Azera 2012-13 models		3,626	17,249	4.76
Ford Taurus 2010-13 models		3,972	16,759	4.22
Toyota Avalon 2011-12 models		3,583	14,574	4.07
Chevrolet Impala 2011-13 models built after July 2010		3,635	12,547	3.45