help not getting more than 29mpg

[*MAD DOG*]

Originally Posted by gray09S-hatch

I dont uderstand i cant get better than 29mpg in my 09 at hatch ? Its a mix of hwy and city, and i just took a 400 hwy trip and at 80-85mph most of they way i got 29mpg also

There is a thing called "wind resistance". Even if you can't see it, it exists. Any speed over 55mph and your really using a lot more fuel for little gain. Drop your speed to the posted speed limit and check back in. Also make sure your tires are at the correct pressure, nearer to the maximum side creates less friction.