Why does my Audi A4 make a clicking noise when braking?

I've noticed that when I press on the brake pedal, my Audi A4 makes a strange clicking noise. It doesn't seem to affect the braking performance, but I'm wondering if this is something I should be concerned about.

The clicking noise is most likely due to worn out brake pads. This is a common issue with Audis and it's a relatively easy and inexpensive fix. I would recommend taking it to a trusted mechanic to have it checked out and replaced if necessary.

Another possible cause for the clicking could be a loose brake caliper. If the caliper is not securely attached, it can produce a clicking noise when the brakes are applied. It's best to have a professional inspect and tighten the caliper if needed.