Comfort and Convenience
The on-board computer reports trip and consumption data the vehicle can measure, such as distance and averages. It summarises what sensors register; it does not diagnose faults or adjust the single-zone climate control on the driver's behalf.
Safety and Driver Assistance
The electronic stability program assists rather than informs: when it detects a difference between steering input and the car's actual path, it brakes individual wheels to help restore direction. It cannot exceed available tyre grip.
Multimedia and Connectivity
Bluetooth carries a wireless digital signal, typically streamed audio and hands-free call voice, between a paired phone and the head unit. Charging current is not part of that link, so it still needs a USB or 12V connection.