Comfort and Convenience
Preferred cabin temperature is a good example: some people feel comfortable a few degrees cooler than others, and clothing, time of day and how long someone has been sitting all shift that judgement.
Safety and Driver Assistance
Wipers, lights and demisting are easier to operate when their positions are already familiar, since a first journey in an unfamiliar car often coincides with unfamiliar roads, and looking for a switch takes attention from the route.
Multimedia and Connectivity
Keeping a phone charged during a long day matters most when it is also handling navigation; where a suitable power outlet or cable is available, topping up en route avoids arriving with a flat battery.