The emission control light is permantly lit on my car (53 reg A3 2.0 FSI). Car drives perfectly normally though. I've done a search on here and found some useful information. I've booked it in for 2 days time at Hitchin Audi but they are quoting £85 simply to diagnose (originally quoted £105 and said this was standard cost for labour + diagnostic test). Did try a couple of other garages but no callback was received as promised, so no custom! As the car's out of warranty I was wondering if anyone knows whether this is a reasonable price? Seems very high to me. Oh, and if anyone has suggestions as to what the problem could be then that would be welcome too! Thanks.