I purchased a very expensive RS model in March 2016 and after 1month the car developed a very annoying brake squeal. I tried to keep on top of it by regular weekly cleaning due to the build up of brake dust which then reacts with the discs which have a design fault as they are non directional. I contacted Audi Slough on multiple occasion for support with this matter, but they have denied the issue and offered me paste or weights to counter the brake squeal. There is a known fault, but there is a solution to replace the discs and pads with an alternate version. Slough refuse to do this and after much back and forth I was forced to sell the car after just 7 months of ownership. Service and attention are terrible from this dealer - I would steer well clear. My previous car was a BMW and I had very good service from them.... I