Comfort and Convenience
Cabin temperature divides passengers more than almost anything else. Some prefer cool air moving constantly, others find that unpleasant and want warmth, so agreeing on a setting early avoids repeated adjustment.
Safety and Driver Assistance
Unfamiliar controls are best explored while stationary: indicator stalks, headlight modes, demisting. Knowing where each one sits removes a small distraction from the first miles, especially at night or in rain.
Multimedia and Connectivity
Hands-free calling is the practical need for many on the road, since answering by hand is unwise and often illegal. Where the car supports pairing, setting it up before departure is simplest.