My newish-to-me car was one of the many vehicles with the EA827 CR engine affected by the VW NOx scandal, AKA Dieselgate, and I got my recall letter. After questioning my favourite local independent VW specialist, and learning that the claims in the recall letter of no adverse affects on economy, power, torque, or noise seem to be true, I booked it in and went to Johnsons VW in the people’s republic of Wilenhall: what used to be Willenhall Coachcraft.
A surprisingly pleasant experience: the staff were nice, the work was carried out, and they didn’t find anything else to try to talk me in to (good, given that there’s a few things due now), and to be honest, all seems the same. Presumably, there’s been a flash of the engine ECU (which I’ll confirm with VCDS soon), but it does make me wonder what has been tweaked? Presumably the rolling road test detection has gone, but has anything affected the actual, real-world emissions? The car has never visibly smoked (it has a DPF, which hasn’t needed regen in the time I’ve had the car), but of course, the one everyone is upset about, NOx, is invisible.
Information on that on the web is hard to find, between all the scandal stories and lawyers looking to get a compensation case :-/. What I can say is that the advice I was given seems correct: economy seems around the same, still no smoke, and it seems to perform as before.