What Does the Audi A1's Start-Stop Technology Do?

I've heard that the Audi A1 has a feature called 'start-stop' but I'm not sure what it actually does. Can you explain it to me?

The Audi A1's start-stop technology automatically shuts off the engine when the car is stationary, reducing fuel consumption and emissions, and starts it back up when the brake is released. It's a great way to save on gas and reduce your carbon footprint.

Audi's start-stop technology is designed to improve fuel efficiency by temporarily shutting off the engine when the car is idle, such as at a stoplight. It's a small but impactful step towards reducing your environmental impact.