What issues have you heard about with the 3.0T in the newer SQ5? All im aware of is the weak rocker arms (which can disintegrate) on the earlier MY17-MY19 models, but these were updated in 2019 to a more robust design. Apart from that, these engines are pretty reliable from what I have seen (I have a 2015 model B8.5 SQ5 and am considering the newer B9 SQ5 - and have been doing some research on them).
As for your question re Passat or Suberb - they are very much the same car underneath the skin. So it really comes down to price and which one you like better as they are essentially very much identical otherwise. What about the Arteon wagon?
Bookmarks