Recently bought a B9 S4. Love it so far but noticed when on A & B roads, when passing other cars, there is a popping or dull knocking comes from the rear driver's side.
Would take it back to dealer, but I travelled from NE Scotland to Southampton to get the best spec/deal.
Any ideas?
Would take it back to dealer, but I travelled from NE Scotland to Southampton to get the best spec/deal.
Any ideas?
