Comfort and Convenience
Cabin temperature is a common disagreement, since people running warm or cold judge the same setting differently. Passengers in the back often experience airflow differently from those in front.
Safety and Driver Assistance
Mirror and seat adjustment belongs before the journey rather than during it, because setting them at a standstill takes seconds, while doing so in traffic competes with everything else.
Multimedia and Connectivity
Phone battery drain matters on longer drives, since navigation and streaming both consume power; whether a car charges via a USB socket or a wireless pad is worth checking.