I know you ask for 2015 sprinters but I have to say I have a 2012 copper canyon 292 fwbhs bought it new and the only problem i had was the utility hookup the box was broke and when they replaced it they didn't tighten a water line. after a few years of suffering in the bedroom with the AC I finally took apart the unit inside and found the ducts were never cut out properly or sealed the air was blowing into the ceiling,,, go figure I work in the HVAC field my entire life never checked it. like they say the plumbers sink always leaks .. the only complaint I have and have seen with the new sprinters are the utility hookup centers they are so small and tight they need to make them bigger other than that I would probably buy again
