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Honda eco mode shuts off one bank of cylinders in cruising and coasting conditions. In a very short period of time (60K miles for ours, I’ve seen reports of it happening earlier), those cylinders running without combustion will eat the piston rings. If you drive less aggressively, this happens sooner. Honda may or may not pay for the several thousand dollar repair, depending on which corporate warranty adjuster you happen to get.
There was already a class action for certain model years, with a TSB. But they didn’t actually change anything about the design, so it does happen in any 3.5V6: Odyssey, Pilot, whatever.
Honda eco mode shuts off one bank of cylinders in cruising and coasting conditions. In a very short period of time (60K miles for ours, I’ve seen reports of it happening earlier), those cylinders running without combustion will eat the piston rings. If you drive less aggressively, this happens sooner. Honda may or may not pay for the several thousand dollar repair, depending on which corporate warranty adjuster you happen to get.
There was already a class action for certain model years, with a TSB. But they didn’t actually change anything about the design, so it does happen in any 3.5V6: Odyssey, Pilot, whatever.
That is horrifying. Do they still use the engine?
They made changes to the gen 5 (2018-2023) that fixed that particular issue.
Yup.