Re: Large room at rear under car
On the '14 U.S. Diesels that space is used for the DEF - urea tank and shield. I found some neat posts and photos in the Aus. thread where the space was used for aux. fuel or water tanks and deep cycle batteries to run their fridges.
Purchased 12Nov13: '14 Limited CRD, White/ Beige, ORAII, LuxII, Nav, Blk Heater, Adv Tech