Well just over 5 months since I took delivery of my 2013 A4 Avant 177 Black Edition and the lower front seat frames have got to be replaced.....and I ain't happyï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ I had noticed a month or so ago that there was some "rocking" movement in the seat base which I initially though was due to the seat not locking into the seat rail correctly. As it turned out it appears that the seat rail tolerances are way out of spec hence the seat frame requiring replacement. My Audi dealer initially thought the seat anchorages were working loose which was a concern, however after an inspection they have determined that the seat frames will have to be replaced under warranty......I'm guessing that my car is not the only one afflicted by this problem as they had the items in stock. My car is booked in tomorrow for 2 days and I am just hoping this is not the start of any other issues!!