As a matter of interest how many Audi Euro 6 owners have had an AdBlue pump failure? USA appear to have this sussed with a 10 year warranty on all emissions components. My car has done 28K miles and has a full service history but the AdBlue pump has failed. Repair costs are astronomical. Audi have offered some goodwill but I think this is a common technical issue and should be repaired FOC. How do we escalate this?, how do we find out just how many cars are affected?. Looking at the forums it would suggest many, many cars.