How does the Audi A2's start-stop system work?

I'm interested in learning how the start-stop system in the Audi A2 functions. Can anyone provide me with an explanation?

The start-stop system in the Audi A2 is designed to improve fuel efficiency by automatically turning off the engine when the car is idling or in traffic. It works by using a combination of sensors to detect when the vehicle is stationary, and then cutting the power to the engine. When you release the brake pedal, the engine restarts automatically, allowing you to resume driving without any noticeable delays. It's a great feature for reducing emissions and saving money on gas.