Comfort and Convenience
The on-board computer gathers data the car already measures and presents it through a dash display, so the driver reads trip and consumption information by cycling through screens with a stalk or steering button rather than interpreting gauges.
Safety and Driver Assistance
The passenger airbag protects one seated occupant during an impact that has already begun, whereas the listed anti-lock braking system acts earlier, keeping the wheels turning under hard braking so steering input still changes direction.
Multimedia and Connectivity
Plugging a phone or memory stick into the USB socket lets the audio system read the device's own track list, so selection happens through the car's controls instead of handling the phone while driving.