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I own a 2018 Accord 1.5T, Touring. For the past few months I have been using 93 octane fuel to see if I can tell the difference in performance and mileage. To my surprise over the holidays, I have been consistently getting 41 to 43 MPG and set speeds of 80 miles per hour. Just curious if anyone else out there is seeing this kind of mileage with 93 octane, or even tried it? I've seen 36 to 38 MPG around town. I never use ECON Mode, and have a heavy foot at start up.