brake question
 

When I release the brake pedal on my 2012 V6 mustang convertible it makes an audible thunk. If I release the brake slowly, it is quiet. Is this normal for all 2012 mustangs or do I have a problem?

Unfortunately I have been told that is is normal. Its an annoying sound and feel for the amount of money that is paid for the vehicle. The 2012 for focus doesn't do do it.
It really devalues the ownership experience for me.

2012 lava premium v6 Auto

Both control arms replaced @ 2K and 5K each side and now @ 20K making noise again

Car currently in shop for TSB for Automatics with front pump seal leak.