Comfort and Convenience
Cabin temperature is a common point of disagreement: people differ in build, clothing and activity, so the same air feels pleasant to one passenger and chilly to another. Agreeing a setting early avoids constant readjustment.
Safety and Driver Assistance
Learning where the main controls sit, such as lights, wipers and the hazard switch, before setting off means less searching while moving. A few parked minutes usually cover what an ordinary journey asks for.
Multimedia and Connectivity
Phone battery is the usual worry on longer trips, since navigation drains it fastest. If a charging socket or cable is available, deciding who uses it prevents passengers competing for the same outlet mid-journey.