Comfort and Convenience
Cabin temperature is a common point of disagreement, since one passenger's comfortable setting feels stuffy or cool to another. Clothing, time of day and personal sensitivity all shift where that preference settles.
Safety and Driver Assistance
Before setting off, running through mirrors, seat position and the wiper stalk removes small unknowns. A few unhurried minutes stationary are easier than working out an unfamiliar switch mid-junction.
Multimedia and Connectivity
Calls on the move raise a separate question from music: whether audio routes through the speakers at all. Where that is possible, arranging it beforehand helps; charging is a third matter entirely.