Beleeve it or not, I got 22.25 MPG HIGHWAY on I-55 - STL to CHI n bak, ~575 miles w/4.36 final drive.
And this is calculated by the ole skool method, difference in mileage divided by gallons fueled, not the ECU guesstimate. LOL! The ECU stops displaying a range when ur close to empty anyway, how fok'n worthless nIssan!