Comfort and Convenience
Cabin temperature is the preference people disagree about most, because warmth is felt differently depending on clothing, seating position and sensitivity to moving air. Agreeing on a setting early usually saves repeated adjustments later.
Safety and Driver Assistance
Spending a moment with lights, wipers and mirrors before setting off means fewer distractions once moving. Passengers benefit too when someone can locate hazard lights or door locks without searching mid-journey.
Multimedia and Connectivity
Battery levels drop quickly on long trips, so any available charging point is worth claiming early. Calls are a separate matter: if hands-free operation is available, it keeps conversation from competing with attention on the road.