Why is my Audi A4 making a strange noise underneath the hood?

I've noticed a strange noise coming from under the hood of my Audi A4. It almost sounds like a whirring or grinding sound. This is my first time owning an Audi, so I'm not sure if this is normal or if I should be concerned. Can someone shed some light on this for me?

Hi Samantha, a strange noise coming from under the hood can be cause for concern. It could be a variety of things from a loose belt to a faulty part. I would recommend taking your Audi to a trusted mechanic to get it inspected and diagnosed as soon as possible.