Rollover evaluations

Midsize luxury SUVs

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
Mercedes M class 2012-13 models		4,722	31,545	6.68
Mercedes GLK 2010-13 models		4,157	26,647	6.41
Acura RDX 2013 models		3,806	20,843	5.48
Volvo XC60 2010-13 models		4,172	21,828	5.23
Lincoln MKX 2011-13 models built after February 2011		4,330	20,347	4.70
BMW X3 2012-13 models		4,135	19,389	4.69
Volvo XC90 2003-13 models		4,718	21,274	4.51
Acura MDX 2012-13 models		4,587	20,474	4.46
Audi Q5 2009-13 models		4,237	18,684	4.41
Lincoln MKT 2010-13 models built after March 2010		4,899	21,010	4.29
Lexus RX 2010-13 models		4,367	18,634	4.27
Cadillac SRX 2010-13 models built after May 2010 Saab 9-4X 2011-12 models		4,505	18,652	4.14
Infiniti EX 2008-13 models		3,970	15,878	4.00
Lincoln MKX 2007-11 models built before March 2011		4,268	14,950	3.50
Acura RDX 2007-12 models		3,911	11,325	2.90