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  1. 2014-2018 Mazda 3 Skyactiv Discussion
    in the Highway MPG thread, someone mentioned that he got on his 2.0: With cruise set at 65 mph, average mpg is 32.0 mpg. With cruise set at 63 mph, average mpg is 38.1 mpg. is 63mph the magical Holy Grail optimum point? and why does going 2mph more kill the mpg soooooooooo much?