Why does the Audi A5 have a Start-Stop System and how does it work?

I noticed that my new Audi A5 has a Start-Stop button on the dashboard and I'm curious about its function. Can someone please explain why the car has this feature and how it works?

The Start-Stop System is designed to save fuel and reduce emissions by automatically shutting off the engine when the car comes to a complete stop. It works by using sensors to detect when the car is stopped and then restarting the engine when you release the brake pedal.

This feature is especially useful in city traffic, where there are frequent stops and starts. It can also be manually turned off for situations where you may not want the engine to shut off, such as in heavy traffic or a hot climate.

One thing to note is that the Start-Stop System does not compromise the car's performance and is designed to seamlessly integrate with the engine. It's just another way Audi is making their vehicles more efficient and eco-friendly.