...The Insurance Institute for Highway Safety rated the car as Good overall, and it’s the safest Prius ever according to IIHS’ detailed table. “Good” rating in all categories translated to the 2016 TOP SAFETY PICK+ from IIHS.
The National Highway Traffic Safety Administration included the Prius Prime in its crash testing safety evaluations. Both the Prius standard hybrid and the Prius Prime share the same platform and overall structure.
For overall safety ratings for the 2016 Prius, NHTSA issued a five-star rating even though not all the tests won that highest-level score. For the Frontal crash rating, the rating received four stars; for side crash, it was five stars; for rollover, the Prius was given a four-star rating; and the overall rating was five stars.