Comfort and Convenience
The start-stop system works on the engine itself, cutting it at a halt and restarting it when the driver releases the brake, so the idle noise and vibration normally felt through the cabin floor briefly disappear.
Safety and Driver Assistance
The driver's airbag only inflates once an impact has already begun, cushioning the head and chest against the wheel. It shortens nothing about stopping distance, so following gaps still have to be judged by the driver.
Multimedia and Connectivity
The AUX input is only a wire carrying an analogue audio signal; it has no idea what is playing. Track names, playlists and volume stay controlled by whichever device is plugged into it.