Its prolly because of the colder temperatures and all that Winter stuff, but still that should only affect the car by maybe 3-7mph. While we're getting drops of 10-15 mpg. Just seems really weird that a season can make that much of a difference.

 

and all that "winter stuff" eh?

read this and you'll have a better understanding of the 'winter stuff'
Why does gas mileage drop in winter?

My Fit has dropped to about 32mpg per tank so far this winter. I am just over 12K on the clock now and am due for another oil change.

 

^ haha i didnt know what to call it. But yeah after reading that article it makes a lot more sense as to whats going on. So i guess according to that article something you can do is fill your tire up with nitrogen. Has anyone done that?

 

I use nitrogen in the tires on my S2000 but not in my Fit (At leeast not yet). I might like to try it to see if it provides any stability in a situation other than the track.