Last week we did a 1000 mile trip in our 2011 Town and Country recently, Missoula to Seattle and back at 5mph over the speed limit, so 70-85 mph and got 24.3 mpg. That is A/C running, cruise set, 3 mountain passes, and plenty of construction zones. The overhead was reading higher, even 28 for one run, but I figured that was off. We have done 500 miles and averaged 29.5 pump caculated at a more reasonable 60-65 in the past. I have no doubt the more modern Pacifica with lighter weight, better 3.6, more gears, and better aero would do 40 mpg if you kept it under 60.
My LRR tires are on their last summer probably and I have 75k miles now. It really seems to have improved from when we first bought it used with new tires and about 25k on it. Even day to day city it gets 18-19.
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