Comfort and Convenience
Cabin temperature is the classic point of disagreement: one person feels a draught where another feels stuffy. Preferences follow build, clothing and where someone sits, so a setting that suits the driver rarely suits everyone.
Safety and Driver Assistance
Learning where the lights, wipers and demister sit before setting off is a small piece of preparation that costs a minute in a parked car. Sorting it later, with passengers aboard, is harder.
Multimedia and Connectivity
Phone battery is the everyday concern, since navigation drains it quickly on longer trips. Where a car offers a charging point within reach of passengers, nobody has to ration screen time to arrive with power left.