Maybe I'm Crazy?
 

Everytime I see my gas mileage start to drop I drive my 350z hard like on a back road and the mileage will go back up. Maybe our 350Zs need to be driven hard occasionally to get the best performance and mileage?

Yep your crazy.

"That doesn't make any sense." -Ron Burgundy

It does it for me sometimes

Me too, last week I had an average of 19.5 mpg, Ive been running the car hard for a few days now, and Im averaging 20.3 mpg on the display-lol I know it doesnt make sense but thats what it says. Sometimes my Z doesnt like to be granny shifted I guess :icon4:

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Go ahead and floor it and then fill up a week later, and do the math? That is divide the miles driven by the gallons used. Don;t rely on that odomoter meter, its false half the time.

My entire paycheck says you will get less MPG than driving normal.

I don't drive it hard all the time just occasionally when I see the gas mileage on the readout going lower.