Originally Posted by RedRiverRam
My '11 is still new but on it's first road trip Shreveport, LA to Houston, TX I got 17.4 running largely in the mid 70's mph. Around town here seems to be closer to high 15s low 16s.
That's your problem right there. Your not going to get the best mpg at 70mpg most likely 55-60 would get you what it's supposed to be. Ever think maybe it's running too hot as well?