Report them to VWCV HQ, demand it gets sorted out as it is a widely known issue on E6 engines. Like you say, you haven’t bought an extended warranty just to put more money in their pockets.
And vwcv hq will applaud the dealer for doing their utmost to reduce warranty spend.
Record profits for VW despite dieselgate. Now how do you think they have achieved that?
Hardly your fault that they designed it so poorly that it takes a day to replace. And given what you paid for it, the quality of the engineering should be considerably better than it is.
I suspect that the engines are now having to operate in clean mode all the time which is stressing the emissions equipment beyond the design limits. Lots of EGR failures reported on vag vehicles after the software was patched.
I swerved the T6 this time round. When VW finally wake up and show some contrition - plus some product quality - I might come back.