All around driving 23-25mpg. Hiway only 27-28mpg.

I have been getting 260-280 miles before it gets down to last bar.
Then again on some days, I get about 220miles if I push my car hard.

So average, I would say somewhere between 22-26mpg.

wow kinda suprised but i guess not really. It's a performance engine. anyways thanks for all the replies! :)