What is the function of the Audi A1's variable intake valve lift system?

I've heard that the Audi A1 has a variable intake valve lift system, but I'm not sure what it does. Can someone explain its purpose and how it affects the car's performance?

The variable intake valve lift system in the Audi A1 allows for more precise control over the intake valves, resulting in better fuel efficiency and improved engine performance.

This system helps regulate the amount of air that enters the engine, allowing for optimal fuel-to-air ratio and improved power output. It's an important component for maximizing performance in the Audi A1.

The variable intake valve lift system in the Audi A1 automatically adjusts the valve lift based on various driving conditions, providing a smoother and more efficient driving experience.