Any newer grand cherokee owners here

I had a 2006 hemi grand cherokee limited, that thing drank gas like crazy. Def not something to get if your are concerned with fuel economy. I had that jeep for 1 year, couldn't take it any longer ! My wife just picked up a 2014 grand Cherokee with the 3.6 pentastar, the jeep is a perk of her new job. Curious of the mileage on this one, and hoping it doesn't need cylinder heads !!!