Your vas deferens.

You’re thinking of the auto start-stop feature. That is a different feature which aims to save gas while you press the brake pedal.

What others in the thread are talking about is a feature that will fully power off the vehicle after it has been sitting idle for a longer period of time. This includes turning off the engine and any of the electronics that normally continue to run during the auto start-stop.

Volkswagen doesn’t sell the ID.3 in the US.