Any suggestions? I have 2010 Prius III. I remember when it was new and I did a fill up I'd get over 500 miles a tank. Now when I fill up it's about 430. My maintenance is up to date, tires, pressure, and driving habits are good. Is the car just getting old, I do have 125k miles on it
Here is a questionnaire that covers most common problems: Fuel economy complaints/queries? Please copy, paste & answer these questions, esp. if you're new | PriusChat The 12V battery can get old and cause MPG to drop, but other aging components should not cause similar problems.
could be your tank isn't holding as much as it used to. are you still getting good mpg's? has your driving pattern changed to mostly uphill?