Comfort and Convenience
The on-board computer matters mid-journey, once the car is rolling: it collects trip data from the vehicle's sensors and presents it as running readouts, so questions about consumption or distance are answered without stopping.
Safety and Driver Assistance
Hill start assist acts after the driver lifts off the brake on a slope. It briefly holds brake pressure at the wheels, giving time to move to the accelerator instead of rolling backwards.
Multimedia and Connectivity
Bluetooth is the link, not the material carried over it. The same wireless pairing can stream music or route call audio through the speakers, depending on which service the connected phone hands across.