Why does my Audi 80's engine make a squealing noise when starting up?

I have recently noticed that when I start up my Audi 80, the engine makes a loud, high-pitched squealing noise for a few seconds before eventually subsiding. What could be causing this?

It is likely that the squealing noise is caused by a loose or worn out belt in the engine. It may be time to have your belts checked and possibly replaced to prevent further issues.

Sometimes the squealing noise can be caused by a faulty or failing alternator. It is a good idea to have your alternator checked by a professional to ensure it is functioning properly.

I had a similar issue with my Audi 80 and it turned out to be a problem with the tensioner pulley. I suggest having a mechanic take a look at it to see if it needs to be replaced.