Don't quote me on this, but I think the navi re-calculates the gas mileage every "x" number of miles.

Because when I first bought my car, it was like 10.4mpg...then it went to 14.6mpg, but now its stuck at 14.6 for the last 2 days, but im sure it will change after maybe 25 more miles and increase. Car is only a week old though.

04 Black G35C 6MT | Premium | Navigation

 

I have 3700 miles on my 2004 6mt coupe
city: 19.5-20 mpg
highway: 25 mpg averaging 75+80 mph

Ivory Pearl Coupe/Willow Interior
6mt Base Model
Aero Package only option

 

Its funny I have a ztube, stillen, xerd headers, free flow cats, fuji y pipe and titanium exhaust, along with a plenum and ecu reflash...my mileage was crappy then at about 4k miles I dumped a bottle of redline into my car and my mileage improved and its been good since...6 bucks for redline

Northface

 

northface. what is redline and where can i get it?

don't start no sh*t, won't be no sh*t!