Rollover evaluations

Minicars

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
Fiat 500 2012-13 models		2,469	15,221	6.16
Ford Fiesta sedan 2011-14 models		2,605	14,122	5.42
Toyota Prius c 2012-13 models		2,529	13,352	5.28
Hyundai Accent 2012-13 models		2,523	13,172	5.22
Ford Fiesta hatchback 2011-14 models		2,603	13,142	5.05
Honda Fit 2012-13 models		2,569	12,894	5.02
Nissan Versa sedan 2012-13 models		2,412	11,947	4.95
Toyota Yaris hatchback 2012-13 models		2,387	10,663	4.47
Mazda 2 2011-13 models		2,321	9,701	4.18
Toyota Yaris sedan 2007-12 models		2,401	9,072	3.78
Hyundai Accent Kia Rio 2006-11 models		2,558	9,526	3.72
Mini Cooper 2007-13 models		2,564	8,810	3.44
Honda Fit 2009-11 models		2,569	8,787	3.42
Chevrolet Aveo 2009-11 models		2,569	7,935	3.09