Why does my Audi A2's engine make a squealing noise when starting up?

I've noticed that my Audi A2 has recently been making a loud squealing noise when I start it up in the mornings. It goes away after a few minutes, but it's quite concerning. What could be causing this and how can I fix it?

The squealing noise is most likely due to a loose or worn out serpentine belt. This is a relatively easy and inexpensive fix that you can do yourself or have a mechanic take care of. Just make sure to address it quickly, as a damaged belt can cause further engine problems.

Another possible cause could be a faulty tensioner or pulley in the engine. It's best to have a professional inspect and replace these components if necessary. Ignoring the issue could potentially lead to more serious and costly damage.