Comfort and Convenience
Scrolling the steering wheel buttons cycles the on-board computer display, so a chosen readout such as range or consumption appears in the instrument cluster without reaching for a separate screen.
Safety and Driver Assistance
In a frontal crash severe enough to trigger it, the driver's airbag inflates from the steering wheel hub. It works with the belt, which must be worn for the cushion to be met correctly.
Multimedia and Connectivity
A listed audio system covers the head unit and speakers. It does not establish how a given phone connects or which file formats play, since those depend on the separate USB and Bluetooth inputs.