JD Power found 35% of owners never use their passenger screen. Euro NCAP has awarded points for physical controls on nine functions since January.

A new J.D. Power study finds that more than a third of car owners with a passenger display never use it, while those who do often encounter problems.

JD Power's latest Tech Experience Index reports only 6% of owners use their passenger screen with every drive, and more than a third have never used it at all.