What is the role of Audi's Quattro all-wheel drive system in the A7?

Can you explain what the Quattro all-wheel drive system does in the Audi A7 and how it affects the car's performance, handling, and fuel efficiency?

The Quattro all-wheel drive system in the Audi A7 provides power to all four wheels of the car, increasing traction and stability on slippery or uneven road surfaces. This not only enhances the car's performance, but also improves its handling and overall driving dynamics.

Additionally, the Quattro system actively distributes power between the front and rear axles, allowing the car to adapt to changing road conditions and improve fuel efficiency by only using as much power as needed.

In short, the Quattro all-wheel drive system is a key component of the A7's driving experience, providing drivers with increased control and confidence on the road.