Comfort and Convenience
Cabin temperature is a common point of difference: people vary in build, clothing and activity, so the same air feels warm to one passenger and cool to another. Agreeing a setting before setting off avoids repeated adjustment.
Safety and Driver Assistance
Locating lights, wipers, mirrors and hazard switches while parked means less searching later, when attention belongs on the road. A few unhurried minutes before departure also help passengers point out what a driver may need.
Multimedia and Connectivity
Phone battery level matters on longer trips, since navigation drains it quickly. Where a charging point is available, agreeing who uses it keeps one device topped up rather than several running low.