Why does the Audi A8 have a hybrid engine and what are its benefits?

I've noticed that the Audi A8 has a hybrid engine, but I'm not sure why. Can you explain the reason for this and what advantages it offers?

The Audi A8's hybrid engine combines an electric motor with a petrol engine to increase fuel efficiency and lower emissions. This reduces your carbon footprint and saves money on gas in the long run.

The hybrid engine in the Audi A8 also offers a boost in power and performance. The electric motor provides instant torque, giving the car a quicker acceleration and smoother driving experience.

A hybrid Audi A8 also has the ability to switch to electric-only mode for short distances, making it ideal for city driving and reducing noise pollution in residential areas.