mostly emissions related things. the 3.0 engine is nothing new, they have been using it overseas for a while. however, it doesnt have the USA mandated emissions crap bolted on it overseas. go read on the some of their forums for a while. the 13-14 models were nothing i would pay a dime for. maybe the new ones are better. i got the wife a different vehicle last fall and have not kept up with the new eco diesel models