Comfort and Convenience
Power adjustment for the driver's seat moves the cushion and backrest electrically along fixed tracks. It positions the body relative to the pedals and wheel, but does not alter cushion shape or lumbar contour.
Safety and Driver Assistance
Emergency brake assist reads how fast the pedal is pressed and raises hydraulic pressure to full braking sooner. It shortens the driver's reaction chain, not the physical distance the car needs to stop.
Multimedia and Connectivity
The audio system is the head unit, amplification and speakers that reproduce sound, while the AUX input is simply an analogue connector feeding an external player's signal into that chain.