Why is my Audi A5 making a strange noise from the engine?

I recently purchased a used Audi A5 and have noticed a strange noise coming from the engine when I start the car. It sounds like a loud screeching noise and doesn't go away even after the car has been running for a few minutes. What could be causing this and is it something I should be concerned about?

This could be a sign of a belt or pulley issue. It's important to have this checked by a mechanic as soon as possible to avoid any further damage to the engine.