Comfort and Convenience
Preferred cabin temperature differs from person to person, and those sitting in the back often feel airflow differently from those in front. Settling on a setting early avoids constant readjustment.
Safety and Driver Assistance
Mirrors and seating position are easier to set while stationary than at the first junction. Doing it beforehand keeps small adjustments out of the way once traffic starts demanding attention.
Multimedia and Connectivity
Listening needs differ: radio asks nothing of a phone, while streamed music depends on mobile signal. Where a hands-free link is available, calls take over the speakers whatever the audio source.