I have an A4 with light grey Milano leather which has stubborn dried water stains which occurred whilst I was overseas. I have tried leather cleaner,soft soap and rubbing alcohol, none of which are making any difference. It almost seems like the discoloration is coming from a chemical leaching out of the seat padding underneath the leather skin. Anyone come across this problem and know how to fix it? Thanks

 

did you tried using the leather cleaner and conditioner @ your local audi dealer ?