Probably has something to do with the fact that the front driver's side caliper is essentially seized, to the point of barely being able to turn the rotor by hand when the car is jacked up, the IMA pack being dead, dead, dead and the prior owner taking frequent short trips and loving the A/C, not to mention having incorrect size, non low rolling resistance tires, so, yeah, it is possible, but, as noted, you do have to work at it. Oh yeah, the prior owner was running non Honda plugs that were basically finger tight in the head too. I am attributing mileage gains to correct plugs at proper torque, plus not using the A/C. Rebuilt calipers on the way. I imagine they will result in a significant mileage boost.
Prior owner was also unaware that brake fluid is a two year maintenance item, so never renewed the brake fluid. I'm guessing that produced the sticky calipers.
I suspect the passenger side front caliper is in similar shape.