Comfort and Convenience
Cabin temperature is the classic point of disagreement: one passenger feels a draught where another feels stuffy. Preferences shift with clothing, time of day and where someone sits, so a comfortable setting is usually a negotiated one.
Safety and Driver Assistance
Spending a minute before setting off, checking mirrors, seat position and where the hazard lights and demister sit, means fewer unknowns later. Preparation is simply about not searching for a control while traffic is moving.
Multimedia and Connectivity
Battery level is the usual concern on longer trips, since navigation drains a phone quickly. If a charging point is available and within reach of a passenger, topping up en route stays separate from calls or music.