Why does the 2021 Audi A5 have a mild hybrid system?

I've been researching the 2021 Audi A5 and noticed that it has a mild hybrid system. Can you explain the benefits of this and how it differs from a traditional hybrid system?

The mild hybrid system in the 2021 Audi A5 helps improve fuel efficiency and reduce emissions. It is different from a traditional hybrid system in that it does not have a large battery pack or electric motor. Instead, it uses a small lithium-ion battery and a belt-driven starter generator which works with the engine to provide a small boost of power when needed.

The mild hybrid system in the 2021 Audi A5 is also known as a 48-volt hybrid system. It operates at a higher voltage than traditional 12-volt systems and allows for more energy to be recaptured and stored in the battery. This results in improved fuel efficiency and smoother engine start-stop functionality.

I've been driving the 2021 Audi A5 with the mild hybrid system for a few months now and have noticed a significant improvement in overall fuel efficiency. It also adds a bit of a power boost when accelerating from a stop, making for a more responsive and enjoyable driving experience.