With only 1200 miles on the clock so far (car is about 4 weeks old) my 2016 QX60 AWD, is averaging about 20.5 to 21 MPG. I'm not Punching it either, 70% highway[NY traffic conditions] , 30% suburban driving. There are reviews from many sources - Edmunds, Car & Driver, etc., that say the same thing: They are NOT achieving the EPA rated mileage. You have to keep in mind, that all cars rarely achieve the ratings. From what I recall the testing is done in a interior environment (no wind or weather affects), steady 50-55 mph speeds on level platform. Not sure about Climate controls on or off. The only car that I had that actually Hit and bettered the EPA rating was the 2013 M37X that I just traded at end of lease. I was getting 23.5 to 24.5 on the highway, with no traffic conditions at 65 or better speeds. I was quite surprised. And only slight variance with Winter gas Blends.