How Does the Audi A6's Start-Stop System Work?

I am interested in learning more about how the start-stop system in the Audi A6 works. I heard it helps with fuel efficiency, but I am not sure how it actually functions. Can you provide some technical details and explanation?

The start-stop system in the Audi A6 is designed to automatically turn off the engine when the car is at a complete stop, such as at a red light. This helps to reduce fuel consumption and emissions. When the driver releases the brake pedal, the engine starts up again. It may take some getting used to, but it ultimately improves the overall efficiency of the vehicle.

The start-stop system in the Audi A6 is able to detect when the car is at a stop and the driver's foot is off the brake pedal. It then shuts off the engine, but still maintains power to vital systems like air conditioning and the radio. When the driver is ready to continue, the engine will seamlessly turn back on and the car will be ready to go.