Are you sure you were getting that high of gas mileage? That's unheard of! I'm very jealous, on my SS/TC I can't even seem to break 30. Then again I do have a hard time keeping my foot from mashing it a few times.

 

my economy thing says i'm getting 25.something but when i calculate after filling its usually more around 21. i'm running rich, stage 2 setup and untuned. oh and i beat the **** out of my car

 

Not really. Just take a look here. https://www.cobaltss.net/forums/fuel...cobalt-116025/
Too many variables.

 

if referring to me, yes i am sure. i drive about 72 on the highway and 57 on normal roads. i dont really speed. sometimes i do hammer it through gears, and highway on ramps are always fun

 

Yea.. I usually don't really go into boost ever when I drive. I just kinda grandpa the thing lol

 

I average 24.9 hand calculated in mixed driving / stop and go. On highway trips my best has been 34.9mpg averaging 64mph (bad traffic). Haven't ever really had a trip without traffic, so I'd imagine there is better mileage to be had.