I have a new model Q5, my fourth Audi. A lot of minor issues and now a major one. When I get to about 40 mph I get a warning 'Four wheel drive fault, car can be driven'. My garage has told me that the clutch is stuck in four wheel drive. They will need to take it to a specialist workshop and the very expensive repair will take a week.
The car has done 10k miles and Audi don't want to know!
I believe that all Q5 car are made in Mexico, and it looks like they have adapted Mexican build quality.