I have a 2010 Audi A6 with a CAHB engine (which I presume is a CAHA detuned to 120kw for the Belgian market).
Anyway, it’s one of the EA189 engines which was the focus of the emissions scandal. I had the dieselgate fix done a year or so ago.
I bought the car on 64,000 miles 4 years ago and it’s just rolled over 120,000. The only issue I’ve had with the vehicle was a high pressure sensor 2(?) years ago which was fixed under an aftermarket warranty taken out when I purchased the car.
The vast majority of the miles have been motorway driving, often at high speed through Germany, but whether that has any bearing on my lack of issues is difficult to ascertain.