Why does the Audi A7 have a variable valve timing system?

I am considering buying an Audi A7, and I noticed that it has a variable valve timing system. Can you explain what this does and why it is important?

The variable valve timing system is an important feature in the Audi A7 as it helps improve engine performance and fuel efficiency. It allows for precise control over the opening and closing of the engine's valves, optimizing combustion and reducing emissions.

In addition to its performance benefits, the variable valve timing system also helps prolong the life of the engine by reducing wear and tear. By adjusting the timing of the valves, it can prevent overheating and improve overall engine longevity.

The variable valve timing system also contributes to a smoother driving experience in the Audi A7. By optimizing the engine's power delivery, it can eliminate any roughness or hesitation in acceleration, making for a more enjoyable ride.