Castrol Edge 5w-40 in my 2.8 2001 Passat, 3.6 2017 Touareg, 3.0T 2014 Audi A6 and Castrol Edge 0W-40 in my 2.5 2012 Jetta. Located in Minnesota. Usually run 5W-40 year round.
Jetta was picky last winter, so switched over to 0W-40 from 5W-40. Depends on how harsh the winter, might be a good idea to go 0W-40.