Comfort and Convenience
Cabin temperature is a good example: some people want steady warmth, others prefer cooler air and more ventilation. Height, clothing and the length of a typical trip all pull that preference in different directions.
Safety and Driver Assistance
Spending a few minutes with the basic controls while parked means mirrors, seat position and lighting are sorted before setting off. A car you don't know well rewards that small habit, especially before a long or unfamiliar route.
Multimedia and Connectivity
Keeping a phone charged through a long day matters most if it is also your navigation device. Where a charging option exists, a cable route that keeps the phone visible but secure is worth checking.