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  1. #1
    Junior Member
    Join Date
    Dec 2007

    2008 Prius Fuel Tank Capacity???

    Bought a new 2008 Prius in December. Noticed that the fuel tank was only holding about 6 gallons or so.

    I would let the fuel gauge get down to 2 bars remaining, and it would only take 4.5 to 5 gallon on fill up.

    Went back to dealer a couple times, they told me everything was fine.

    Submitted a complaint to Toyota National Customer Service.

    They phoned me back and said that it is "normal" for the Prius fuel tank (flexable rubber bladder) to only hold 6 gallons or so in the winter. And that the tank would not hold "rated" capacity of 11.9
    gallons until after temperatures are above 70 degrees.

    Just curious, how much fuel is your 2008 Prius holding, and what is the temp in your area?

  2. #2
    Junior Member
    Join Date
    Jan 2016
    I've had my 2008 Prius since 2008. I moved from Florida to upstate NY and noticed that in winter I got worse fuel economy. Now my gas gauge has gone nuts. I filled up my tank and the gauge didn't go all the way up. then, after 147 miles, my gauge was down to 3 blips, so I went to the gas station. After two or so gallons, the car wouldn't take any more. then, when I started the car again, the gauge didn't move from 3 blips. It's been really cold lately, could that be it? I get much better fuel economy in the summer: 50 mpg vs. 42 mpg.

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