Hi there, I am new to this but have been reading for a few weeks whilst I pondered on what car to go for. I plumped for a 2013 A4 S line Quattro black edition. This weekend having had the car for 5 days I decided to fit the accessories I purchased. My first purchase was mudflaps to keep the dirt down on the Phantom black paintwork. I have read all the posts about fitment etc... but thought for anyone getting a 2013 model this may be of interest. The standard A4 mudflaps from Audi on the rear of the S-line do not fit. The front ones do but ideally you can only use the 2 screws as the other fitments that Audi recommend, unless you want to force the trim or drill through metal are not advisable in my opinion. they hold really firm with the 2 screws anyway. I found some rear mudflaps on E-bay that I had to trim a little to fit but they are much smaller and compact than standard Audi ones. I have posted some pics so you can see installation and final fitting.