Comfort and Convenience
Start-stop is switched by a dedicated button each time the car is started; the setting is not remembered between journeys, so a driver who prefers the engine running must press it again.
Safety and Driver Assistance
A passenger airbag responds only to a frontal impact of sufficient force. In a low-speed knock or a side or rear hit, it stays folded, since deployment would offer no benefit there.
Multimedia and Connectivity
Bluetooth handles the wireless link itself: it pairs the phone to the car and carries call audio or streamed sound to the speakers, while charging depends on a separate power connection.