I've seen better mileage in my Odyssey at 60 compared to 55. However, that's running in the 1800 rpm range.
My Civic is another story. My best mileage comes at *slower* speeds. Considering that this is an EX that runs at higher rpm, I'd expect the optimum speed to be even lower than mine.
Maybe there's some VTEC trickery going on. My DX doesn't have that.
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![](http://ecomodder.com/forum/fe-graphs/sig268a.png)
11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
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