Sounds like the 3.6 gets a CVT, 2014 was a 5 speed auto, I suspect that would be a good bit of the mileage improvement.
Like that they let you get the tech package on the touring trim, so it's possible to get it with a manual transmission.... unless there is some other rule, to prevent that. 2014's in Canada only let you get it on the limited pkg.
Agree with the other comments, why so much black plastic trim and cladding? I'll stick with my A4 Avant for now.