I get about 300 if I drive it without be driving slow, ha. On the track is a whole different story like under 100 miles per tank!

 

I got about 305-315miles a few tanks ago with about 80% of it being highway miles. I ended up filling about 13.2 gallons and I believe our tanks hold 14 gallons if not slightly less correct? That was on 91 oct btw. My personal best on e85 is somewhere between 220-240 miles when I drove up to GST in Norcal from Socal to get tuned

 

^im jealous of your gas mileage haha...

 

There is already a thread on MPG. Closed.