What is the Audi A3's 48V mild hybrid system and how does it work?

I've heard that the Audi A3 has a 48V mild hybrid system, but I'm not sure what that means or how it works. Can someone explain it to me?

The 48V mild hybrid system in the Audi A3 is a technology that allows the car to recover energy during braking and store it in a compact lithium-ion battery. This energy can then be used to power the car's electrical systems and provide additional torque to the engine, resulting in improved fuel efficiency and performance.

The 48V mild hybrid system in the Audi A3 is a step towards electrification and reducing emissions. It allows the car to coast with the engine completely off at speeds between 34-100 km/h, saving fuel and reducing emissions. As for how it works, it's a bit technical, but essentially it uses a belt alternator starter and a DC converter to manage the energy flow.

Think of the 48V mild hybrid system in the Audi A3 as a support system for the engine. It provides a boost of power when needed and also helps to smooth out the start/stop function when the engine turns off at a stoplight. It's a clever piece of technology that adds to the overall driving experience of the A3.