2010 Prius with 55+ mpg. Suddenly, 43mpg stop and go. What gives?
Do you do a manual reset of your consumption screen each time you re-fuel? If you don't, then those lower readings will factor into the lifetime MPG & will keep you from seeing the kind of MPG's you were used to. Also check your tire pressure, it might have dropped a few pounds. Did you get new tires? That sometimes will effect it.
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