I've been detailing this A5 for one of my customers for years now. Daily driver and as usual when be brings it in, it had some water spots, filthy wheels, and some light wash induced micro marring. Washed, clayed, machine applied DG501 which took care of water spots, light wash/clay induced micro marring. Still has some light swirls and a few RIDS, next time will be another compound and/or polish session.