First off do not listen to Dave, he says that in every thread he can fit that in.
My wife has a 2014 with a v6 and it is just fine, especially in sport mode, I wish she had the hemi just for the fun factor but love the fuel mileage, everyday driving she is getting 21 or so mostly city with some highway. She has about 4500 miles on it and hasn't had a tank yet with a average below 20. I just got a 2013 Ram with the 8 speed and hemi though and I am averaging 15.5 though 1200 miles, and that is mostly highway driving. I towed my dad's boat last weekend with it and you didn't even notice it on the truck, I did the same with her jeep and you could definitely tell it was back there, it didn't seem to struggle, but you knew it was back there, I got about 13 average with my truck pulling it, her jeep was about 14. The boat is only a 17' Lund, but it does weigh a decent amount.