Hi this is my first post on here and starting to learn it a little bit. Anyways i have a 2015 mustang gt and every time i go up/down a driveway or hit a little bump at low speeds theres a squeaking noise from the back rear of the car what could this be. I read that it could be a break line rubbing on something. im going to take it to the dealer but rather see if the mustang family could help me out first . Thanks

 

Could be something wampy in the suspension too. My last car (not a Mustang) had a REALLY annoying squeak from passenger rear. Turned out to be a problem with the suspension mounting. I never had it fixed. Too costly. Just turned the radio up. But with yours I'd have the dealer look and embrace the warranty.

 

I had the same issue but it was a squeak in the front. The routed the brake line a different way and I haven't had an issue since. Little issue but boy did it wear on my nerves! You might be able to recreate the noise if you can find the brake line where it is near the frame.

 

Was this ever fixed? What was the issue?