Wow I had no clue this was possible.

[CoastieCosta567]

i get 350-370 mpg as well, i and i have 132,000 miles on mine, it's all in air pressure and changing new small parts as well. well i think it is.

[Jolly Roger VX'er]

mine varies with the seasons....I got 16mpg the last fill-up which is typical for winter for me. The worst I got this winter was 15mpg but that involved a few times of just idling in the drive-way for 20 minutes each time because she set for a couple weeks. Typically in the warmer months (spring,summer,fall) she gets 17 to 17.5mpg mixed driving and SC'ed.

My all time best was traveling to Vermont with cruise on she got 23mpg there and 22mpg back. I've never come close since.....drats!

[cyronman]

I filled up just about COMPLETELY (~21 G's) on Monday--drove up to Riverside, over to Irvine and back, then back to San Diego.
Burned close to 3/4 of the tank, and had to fill up again today, but...
I had rolled 354 miles.
Not sure what the exact difference is either from the stock size wheels (not drastic), but around town I usually get 290 miles a tank.