Comfort and Convenience
Preferred cabin temperature is a good example: some travellers settle at a cooler setting, others at a warmer one. Body size, clothing and where someone sits all shift the answer, so agreement usually comes from discussion rather than one fixed number.
Safety and Driver Assistance
Spending a few minutes with lights, wipers, mirrors and climate controls before setting off means those actions are already familiar when they are needed. Unfamiliar layouts are easier to learn while parked than in moving traffic.
Multimedia and Connectivity
Phone battery drains faster on a long drive with navigation running, so a plan for keeping it charged matters. Whichever charging method a car offers, checking that the right cable travels with you is worth doing.