I got my 2011 Juke last February 2011 and I was so proud of it until July 11, 2013 at 48,100 miles, it just broke down.
I had it towed to a Nissan Service Center and they changed the "TUBE - ASMY INLET" plus a gasket valve in and a seal-o ring.
I am not a mechanic so I don't know how this all work.
Anyway, if you are a potential buyer, just be ready to start paying for maintenance at 48,100 miles.
I am not sure what and when the next problem will come up now.