I bought a 2016 Civic EXT at
I bought a 2016 Civic EXT at the end of August. The initial tanks were getting about 28 MPG in mostly city driving. I just drove it from Boston to Baltimore and back I90 to 84, around NYC to I95, I had the econ button on and got 42.9 mpg. Coming back I turned the econ button off, came up through the Poconos ( I81, I 83, I84)which was a harder terrain and still the computer told me 41.3 mpg.
I do not think the car and computer knew really what it could do until driven long distances. Every hour I watched the mpg move from 32 to 34 to 39 and thought surely this is wrong. Amazed when it went over 40!