Is it better to sit high or low in a car?

Ideally, the back of your car seat should reach the height of your shoulders. If it is slightly higher or lower but you can still rest into it, it will be fine in most circumstances. Most car seats come with adjustable headrests. Ideally, you should be able to adjust both the height and the front-to-back position.Correct Sitting Posture: Driving - Physio Med