Just got my wife an 09 Commander Limited with the 5.7 and what i understand is Quadradrive (?? full time with low range ??) - it has 54K on it and is in great shape (appearance wise) - we even got the window sticker which says 13-19 for MPG. My question is what is typical for these in the real world? We are hard pressed to get more than 13 out of it with about 60% highway and 40% city - i know it's not a Prius but thought it would be at least in the middle of the stated range. I searched and didn't find specific threads readily on this, if there are, a link would be greatly appreciated. I am assuming it may be time for plugs - just through i would get some real world input on what everyone else is getting as i feel my way around this vehicle.......... thanks!