I have a 2015 4 cylinder sprinter with 70K on it.
Gets around 22-24 mpg no problems thus far.
Std wheel base you put a 14 ft kayak inside and close the door!
I have the x2 on my enduro and I think it is great. Butter smooth.
I would have put one on my 2018 Levo but I don't think it was available so I went with the dps