Comfort and Convenience
Cabin temperature is rarely agreed on. Body size, clothing and where someone sits relative to the sun or a vent all shift what feels pleasant, so the setting one passenger chooses may suit nobody else.
Safety and Driver Assistance
It is worth finding lights, wipers, mirrors and demisting before setting off rather than during a journey. Preparation while stationary means an unexpected shower or a fogged window does not become a search with passengers waiting.
Multimedia and Connectivity
Phone batteries drain fastest when navigation runs all the way. If power is available on board, a passenger can keep a device topped up en route, which matters most when the phone holds tickets or an address.