Comfort and Convenience
Seating position is personal. Height, arm length and the habit of sitting upright or reclined all change what feels natural, which is why two drivers rarely settle on the same setup in the same car.
Safety and Driver Assistance
It is worth a stationary moment to locate the essentials: hazard lights, demister, headlight switch. Sorting that out before setting off means attention stays on driving rather than on hunting for an unfamiliar button.
Multimedia and Connectivity
Phone battery is the usual weak point on a long day out, since navigation and music both drain it. If a power source sits within reach of the front seats, a phone can charge while staying in view.