None of the VW UK spec cars use AdBlue as far as I've seen, none of the Mk1 or Mk2 CC's nor do Passat B7's
Any & all of the 190hp TDIs use AdBlue across the entirety of VAG - VW, Audi, Skoda (and I assume Seat), for example in the current Passat, A6, Superb etc.
The 190's? So Euro6? Sounds like it's the higher BHP ones have to use it, to keep emissions down.
As I don't think the Euro 5's do from what I've seen
I thought the lack of Adblue on EUR 5 VAG tractors was the reason for the 'creative' emissions software.

With many cities now lifting up the emissions drawbridge to improve air quality, where will this leave the VAG fumers? In Germany they are now actively monitoring their major cities air quality and won't issue any lower than acceptable green permits during periods of high pollution. This summer no permits below EUR 4 were available. The fine for entering a restricted area with a car that doesn't comply and has a displayed permit is €80. From 2017 tractors will need instead of a green permit, a blue NOX one to enter NOX restricted sub-zones. Only about 500k of 13m tractors in Germany meet EUR 6 and can display the blue permit. If you take your car to Germany on holiday then you will need a green or blue permit, which you can order online, before you go. Iirc France is dragging their heels on implementing this, but the writing's on the wall. Will #Brexit mean that we will escape the full implementation of this EU wide system?
As the standards drawbridge goes up, older more polluting car increasingly cannot visit German cities and this may make older cars not a viable option rather than them wearing out. Certainly one to monitor and think about if you are a London commuter with a tractor and view the vehicle as a long term keeper!
http://www.environmental-badge.co.uk/en/environmental-badge.html