cost to repair spoiler brackets underneath motor

are you referring to the plastic belly pan under the motor? if so don't worry about it. just throw it out. dont spend your money having someone else fix something that isnt broken.

This pan protect the belly of the motor. It is valuable. Call 800-all-Audi and ask for one. They deal with only Audis. They have helped me. Avoid damages. These pans have several ways to be attached. Make sure they send all of these. New from Audi are lots of $$. Best of luck.