2017 Acura MDX Tech FWD
I'm aborting this mission. Not only am I seeing less range and a constant steady instanteous rating of 32.5 mpg average and 33.8 mpg max, but my transmission is acting weird now. It won't respond to my throttle input at times in "D" mode.I figured there might not be a difference in mpgs in 87 -vs- 93 Octane at steady hwy speeds at sea level. You are probably using under 100 hp to maintain 60 mph. You might see different results in higher altitudes, hilly/mountainous terrain, higher interstate speeds of +80 mph, or hauling a heavier load when the MDX needs that extra performance from 91-93 octane.