Well just got back from a upstate NY to Florida and back trip with the Ascender . It was very consistent. A low of like 21.5 mpg on a tank of BP gas to a high of 22.8 mpg . This was all pretty much highway driving going 70-72 mph with occasional runs of 60-65 mph . Weather going down was bad the first day , driving rain and wind and it still got 22 mpg . Did not see any 24 mpg which I have seen in the past which I suspect has to do with running winter grade gas which decreases mileage. This was all done by the miles and gas fill calculations, Ascender does not have a DIC. Mine is 2wd and has 3.42 gears in it . Car ran great with no issues other than the stupid TPMS popping on a couple of times , nothing wrong with tires . I am pretty sure it's the kids ipods wireless radio's that's setting it off when they have them on in the backseat . Next restart light goes out . Worthless feature!