What is the purpose of the Audi A7 Sportback's valve lift system?

I've heard about the Audi A7 Sportback's valve lift system, but I'm not entirely sure what it does. Can you explain its purpose and how it works?

The valve lift system in the Audi A7 Sportback is responsible for adjusting the height of the intake valves according to the car's current driving conditions. This allows for better fuel efficiency and performance.

The valve lift system works by using a set of cam followers and cams to adjust the intake valves. This allows the engine to change the amount of air and fuel mixture entering the combustion chamber, resulting in better overall engine performance.

In simpler terms, the valve lift system in the Audi A7 Sportback helps to improve the car's power and efficiency by adjusting the intake valves to the optimal height for the current driving situation.