What is the efficiency of the Audi A8's hybrid system?

I'm considering purchasing an Audi A8 hybrid and I want to know how efficiently it runs compared to other hybrid cars.

The Audi A8's hybrid system is highly efficient, with an average fuel economy of 27 miles per gallon. It also has a regenerative braking system, which helps to capture energy and further improves its efficiency.

In my experience, the Audi A8's hybrid system is one of the most efficient on the market. I've been able to get an average of 30 miles per gallon while driving in the city.