How does the hybrid engine in the Audi A7 save fuel?

I've heard that the Audi A7 has a hybrid engine, but I'm not sure how it works and how it can save fuel. Can anyone explain it to me in simple terms?

The hybrid engine in the Audi A7 uses a combination of gasoline and electric power to reduce fuel consumption. This is achieved through regenerative braking and automatic start/stop technology, allowing the car to rely on electricity at lower speeds.

The Audi A7 has a lithium-ion battery pack that stores energy from regenerative braking and assists the engine during acceleration. This reduces the strain on the engine and results in better fuel economy.