What is the purpose of the start-stop system in the Audi A1?

I've heard that some newer cars have a start-stop system, including the Audi A1. What is this system and how does it work?

The start-stop system in the Audi A1 is designed to automatically shut off the engine when the car is stopped in traffic or at a red light. This helps reduce fuel consumption and emissions.

The start-stop system is a feature in modern cars that helps save fuel and reduce emissions by automatically turning off the engine when the car is stopped. This is especially useful in congested areas or during city driving.

The start-stop system in the Audi A1 is a smart feature that helps improve fuel efficiency by turning off the engine when the car is at a standstill. It can quickly restart the engine when needed, providing a seamless driving experience.