How does the Audi A7's hybrid engine save fuel and reduce emissions?

Can you explain the mechanics and technology behind the Audi A7's hybrid engine and how it helps to improve fuel efficiency and reduce emissions?

The Audi A7's hybrid engine uses a combination of gas and electric power, allowing it to utilize energy more efficiently and reduce fuel consumption. Additionally, the car is able to recover energy from braking and coasting, which further lowers emissions and saves fuel.

By employing a system known as 'energy recuperation', the Audi A7's hybrid engine is able to convert kinetic energy into electric energy while the car decelerates. This energy can then be reused to power the vehicle, leading to lower fuel consumption and emissions.