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Probably pretty close. On our last trip to Maine and back (just about 400 total miles) we got about 20mpg from my wife's 07 AWD Edge. 95% of it was on the highway with the AC on at or around 80-85 mph. I'm sure with lighter driving you could get more than 20 MPG.
Got 25 hwy on a long trip with wife's 07 Edge fwd only. Now I notice the lie-o-meter sez 19 avg as she never resets the mpg, only has it on miles til empty.