Comfort and Convenience
Cabin temperature is a common point of difference: one person feels comfortable in cool air while another prefers warmth. Agreeing on a setting early, or letting passengers say what suits them, avoids silent discomfort.
Safety and Driver Assistance
Learning where the main controls sit before setting off means lights, wipers or demisting can be adjusted without hunting for them. A few minutes parked is usually enough to locate what a drive will need.
Multimedia and Connectivity
Keeping a phone charged matters most on long trips, when navigation drains a battery. If charging is available, agreeing who plugs in avoids a scramble; music and calls are separate questions, handled through whatever audio setup is present.