Why does the Audi A6 use a 48-volt mild hybrid system?

I've noticed that the Audi A6 has a 48-volt mild hybrid system. What is the purpose of this system and how does it work?

The 48-volt mild hybrid system in the Audi A6 helps improve fuel efficiency and reduce emissions. It works by using regenerative braking to charge a small lithium-ion battery, which then provides supplementary power to the car's engine during acceleration.

The 48-volt mild hybrid system in the Audi A6 also allows for smoother start-stop functionality and a more seamless transition between the engine and electric power. This can improve the overall driving experience and comfort for the driver.

In addition to its environmental benefits, the 48-volt mild hybrid system in the Audi A6 can also provide a performance boost when needed. The electric motor can provide extra torque during acceleration, making the car feel more responsive and agile on the road.