Loud Screaching Sound while coasting but not accelerating Audi A4 wagon


#1

Today while driving I noticed a loud screaching sound coming from under my car while coasting but not accelerating. I don’t believe its the breaks and it sounds like metal is grinding against metal, anyone have any thoughts? THANKS!!


#2

It’s impossiblke to tell without seeing the car. It could be brakes (torque load on the axles can have suttle effects, and it can affect noises), it could be a component bearing (acceleration puts a load on the serpentine belt and can affect noises), it could be the tensioner, it’s just impossible to tell from here. It’s always a good idea to get the brakes checked for noises like this anyway.