How are the brakes? Are they dragging? Although you would have smelled the burning brakes if a caliper had been seized badly.
How are the tire pressures? You should be around 32 psi, anything lower will unnecessarily cause rolling resistance to reduce your MPG.
Are the new plugs you had put in the proper iridium model as specified by Honda?
Make sure any controller firmware version is up to date.
Other than that I can't offer any suggestions. The 7th Gen Hybrid seem to have had as much issues as the environmental issues it is trying to solve, perhaps that was one of the reasons the model was discontinued after only a few years of production, and never made into the 8th or 9th Gen Accords.
How are the tire pressures? You should be around 32 psi, anything lower will unnecessarily cause rolling resistance to reduce your MPG.
Are the new plugs you had put in the proper iridium model as specified by Honda?
Make sure any controller firmware version is up to date.
Other than that I can't offer any suggestions. The 7th Gen Hybrid seem to have had as much issues as the environmental issues it is trying to solve, perhaps that was one of the reasons the model was discontinued after only a few years of production, and never made into the 8th or 9th Gen Accords.