Why is my Audi A6 making a strange noise while driving?

I have noticed a strange noise coming from my Audi A6 while driving at high speeds. It sounds like a high-pitched whine and seems to be coming from the engine. What could be causing this and how can I fix it?

The strange noise you are hearing could be due to a loose belt in your engine. It is important to have this checked and tightened or replaced if necessary, as a loose belt can cause damage to other parts of your car.

Another possible cause for the noise could be a problem with your transmission. If you notice any issues with shifting or acceleration, it is important to have your transmission checked and serviced by a professional.

Make sure to also check your wheel bearings and suspension components as they can also cause strange noises while driving. It is best to have these inspected by a mechanic to determine any necessary repairs.