I took some notes on gas and milage on my wife’s new car and here it is. It’s really a big difference compared to the 12 mpg Denali!

8/16 8.702g 510m
8/22 9.25g 764m
8/24 7.995g 1031m

764-510=254m divide 254miles with 9.25gallon which equals 27
1031-764=267m divide 267 miles with 7.995g equals 33

So if I calculated this right we have a 27mpg on city and 33mpg on highway!
Oh what a relief!

-11/7/09- on a side note, I was just doing some home filing and noticed that we actually drove the Expedition in around 55,000 miles