How does the hybrid technology in the Audi A6 work?

I'm curious to know how the Audi A6 is able to achieve fuel efficiency with its hybrid technology. Can someone explain this in detail?

The Audi A6 uses a hybrid system where it combines a traditional gasoline engine with a small electric motor. This allows the car to switch between the two power sources depending on the driving situation, resulting in better fuel efficiency.

In addition to the hybrid system, the Audi A6 also utilizes regenerative braking. This means that whenever you brake, the car's kinetic energy is converted into electrical energy and stored in the battery. This further improves the car's fuel efficiency.