How to determine if the brake pads in an Audi 80 need to be replaced?

I recently bought a used Audi 80 and I noticed a slight squeaking noise when I apply the brakes. I want to make sure my brake pads are still in good condition. What are some ways to determine if they need to be replaced?

The easiest way to check if your brake pads need to be replaced is by visually inspecting them. If they are less than 1/4 inch thick, they need to be replaced. Also, if you notice any uneven wear, it's a sign that they should be replaced as soon as possible.

Another way to check if your brake pads need to be replaced is by listening to your car when you apply the brakes. If you hear a grinding or scraping noise, it's a clear indication that your brake pads are worn out and need to be replaced.