What should the car head rests be level with head or neck?

Car headrests should be positioned so that the top of the headrest is level with the back of the head or the crown of the head. This alignment helps to provide maximum support during a collision and reduces the risk of whiplash injuries. If the headrest is too low, it may not adequately protect the neck; if it's too high, it can be uncomfortable. Adjusting the headrest correctly ensures both safety and comfort while driving.