Want to know about advertised mileage. A new Murano is advertised at 20/28/23. Does the manufacturer use real 100% gas or 10% ethanol? I have used straight gas and get anywhere from 2 to 4 miles more per gallon.
Doesn’t matter what kind of fuel they use because of the sentence ( your mileage may differ ) . If you don’t require non ethanol fuel why do it . The extra cost cancels out any fuel usage you gain.
Edit: A simple Google search finds that the EPA does use non-ethanol fuel . Those numbers on the sticker are just guide lines for comparison not something you can actually expect.