How does the Audi A1 use its 48-volt mild-hybrid technology?

I've heard that the Audi A1 has a 48-volt mild-hybrid technology, but I don't really understand how this affects the car's performance. Can someone explain it to me in simple terms?

Yes, the Audi A1 does indeed come equipped with a 48-volt mild-hybrid system, which assists the car's gasoline engine while accelerating. This leads to improved fuel efficiency and reduced emissions.

The 48-volt mild-hybrid technology in the Audi A1 also allows for smoother start-stop functionality, which can save even more fuel in stop-and-go traffic.