https://www.cnet.com/roadshow/news/2018-bmw-x2-iihs-rating-head-restraints/

Many cars fell out of favor with the Insurance Institute for Highway Safety (IIHS) after its Top Safety Pick award criteria grew to include headlights and passenger-side crash tests, but the 2018 BMW X2 missed a safety award for a stranger reason.

The IIHS announced this week that the X2 just fell short of a Top Safety Pick designation. Its head restraints, which were only rated Acceptable after middling crash performance, are to blame. In order for a vehicle to earn Top Safety Pick, it must receive Good ratings in all of its crash tests, excluding the new passenger small overlap test.