Dodge are junk, we have 6 City Pro Masters, a 1500 and a 3500 and they are always in the shop.
Not sure about camper vans but my Pri Master has been a maintenence nightmare. About the only things that haven’t gone out has been the engine and tranny. Van has 100k on it. Oil pumps,wheel bearings, rebuilt front end, water pump, Well over 15 head lights. Door locks, sensor out on a break pad and a 2nd or third water pump are currently on the to get fixed list. If you get one get the best warranty available.