I have discontinued using some of my hypermiling techniques to test their effectiveness. I have been watching my tachometer closely, and, rather than using cruise control, I have been manually keeping the RPMs under 2000 at all times which usually results in an interstate cruising speed of 60mph. I have also been practicing engine-off-coasting. I am still driving conservatively, but I have resumed using my cruise control and started driving up to 70mph. I have also started shifting to neutral rather than turning the engine off for coasting. After one day of this, I have some surprising results.

My best results while hypermiling were 31.5mpg. I also got results of 27mpg and 28.9mpg. My most recent results driving conservatively but not practicing the aforementioned hypermiling techniques was 31.8mpg—better than anything I have achieved hypermiling! I’m not sure quite what to make of these results. I’m relatively sure I must be doing something wrong; I just don’t know what. Any help will be greatly appreciated. Fire up the new comment system on this one!