Comfort and Convenience
Seat firmness is a personal choice because some people prefer soft cushioning on long roads while others want firmer support, so trying the seat position beforehand is useful.
Safety and Driver Assistance
Checking mirror positions and steering wheel reach before setting off means those adjustments are not worked out while driving, which keeps attention on the road.
Multimedia and Connectivity
Listening preferences vary widely: a driver may want a single playlist for hours, while a passenger might prefer radio, and if separate volume controls are available, both needs can be met.