Why does my Audi A2 make a strange noise when I turn on the AC?

I've noticed that whenever I turn on the AC in my Audi A2, there is a strange rattling or buzzing noise coming from the engine. It sounds like it's coming from the front of the car. What could be causing this and is it something I should be concerned about?

The AC compressor may be failing or there could be an issue with the AC fan. I suggest bringing your car to a certified mechanic to diagnose the problem and fix it before it becomes a larger issue.

It sounds like something may be loose or broken in the AC system. I recommend getting your car checked out by a professional to prevent any further damage.