yeah mine does the same, on my one though its the b4stard brakes. i have a Cupra R 225 for almost 3 years now and ive never not had squeaky brakes on it.
They squeak slightly sometimes when going forward slowly, and when i reverse it sounds like my cars making a whale song.
Nothing the dealers can do about it, trust me, its been back so many times and each time they take them off, clean out all the crap, put them back on....no more than a a week or two later they're back to their screaming habits.