How does Audi A8's hybrid engine reduce emissions?

I've heard that the new Audi A8 has a hybrid engine. Can you explain how this helps reduce emissions?

The Audi A8's hybrid engine combines a traditional gasoline engine with an electric motor, allowing for more efficient fuel consumption and reducing overall emissions.

By using electricity to power some of its functions, the hybrid engine in the Audi A8 emits less harmful pollutants into the environment compared to a traditional gasoline engine.