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How far can you go on 1 bar (mileage/tank)

Discussion in 'Gen 3 Prius Fuel Economy' started by rrolff, Oct 23, 2009.

  1. rrolff

    rrolff Prius Surgeon

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    Haven't seen this detailed... Since we all get different mileage, I'm trying to gauge how far we can go on a tank. As an example, I went to 1 bar at 450 miles - drove 30 and filled up. Getting 48MPG (and allowing that the "prius" number is off 5%), I can still expect around 1.5+ gallons left - or an easy 50 miles. This means in theory I can go safely 80 miles on 1 bar.......

    Anyone checked this?
     
  2. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    In my 2009, I have run out of gas in as little as 7 miles once the last bar started blinking. (I have also driven 30 miles with it blinking, without running out) Now I drive 400 miles and start looking for a station.
     
  3. qbee42

    qbee42 My other car is a boat

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    I've seen these 1 bar threads go on for pages.

    Tom
     
  4. rrolff

    rrolff Prius Surgeon

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    I believe the 09/06 have different fuel tanks. The 2010 has an 11.9 gallon tank - and hence operates likely differently.
     
  5. Ads_green

    Ads_green New Member

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    Well I had 1 bar on my 2010 and filled it with 35litres so potentially 2 gallon left?
     
  6. qbee42

    qbee42 My other car is a boat

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    The tanks are different, but not the fuel tank threads. This was supposed to be a wry comment about beating a dead horse. We visit this same topic several times a week, hence the comment about the threads going on for pages.

    Tom
     
  7. rrolff

    rrolff Prius Surgeon

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    Understood - but I have not seen it on the 2010 - can you point me towards it? I know there are many on the GenII, but I don't want to just take your word that they are the same - just different tanks - I'm looking for real world info on the Gen III...
     
  8. rrolff

    rrolff Prius Surgeon

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    (???) isn't 35 litres 4+ gallons (approx - depending on what you call a gallon and where you sit in the world)?
     
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  9. rrolff

    rrolff Prius Surgeon

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    (???) isn't 35 litres 4+ gallons (approx - depending on what you call a gallon and where you sit in the world)? I am thinking I get between 1.5 and 2 gallons left after running 1 bar for some time...
     
  10. fuzzy1

    fuzzy1 Senior Member

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    Bob Wilson does this for sport. The base post has his distance and gallon figures, but the problems he describes in that post are a side issue. He posts more data and a somewhat better resolution if you read very very deep into the thread.

    35 liters is about a quart over 9 US gallons.
     
  11. ken1784

    ken1784 SuperMID designer

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    So, the driving distance depends on your mpg number.

    Anyway, following is our findings among JP owners.
    pip liters gallons
    1 1 solid -> 1 blink 1.8 0.48
    2 1 blink -> empty 7.5 1.98


    Ken@Japan
     
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  12. rrolff

    rrolff Prius Surgeon

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    Thanks! It seems BobWilson proved twice that from blink to out is 2.16 and 2.18 gallons. So 2 gallons from blink sounds like a good number to run with... Very nice to know...
     
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  13. richard schumacher

    richard schumacher shortbus driver

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    If you assume that you will one day run out of gas.
     
  14. rrolff

    rrolff Prius Surgeon

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    How does that old saying about assume go??? Never assume - it makes ????
     
  15. PriusRoadWarrior

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    I agree with ADSGREEN, I also filled and had 2 gallons left at the time, good for at least another 50 miles on my 2010.
     
  16. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    u lie
     
  17. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    last bar starts blinking when tank is aprox 12% full, iow, you have the proverbial 8th of a tank.

    so figure out how far ya went with the prev 7/8th, and divide by 8. subtract a mile, (jus in case) and tha is how far you can go.

    all this assumes the tank was full in the first place.
     
  18. rrolff

    rrolff Prius Surgeon

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    I think we should stick with Bob's detailed analysis that shows 18.2% (average 2.17 US gallons).

    Where in the world did you pull your number from - it sounds official ????
     
  19. DaveinOlyWA

    DaveinOlyWA 3rd Time was Solariffic!!

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    CANVIEW tracks info computer to computer. it tracked gas gauge readings in 2½ % increments in whole #'s iow;

    100, 97,95, 92, etc. the last bar would ALWAYS start blinking at 12 %
     
  20. cantgoback

    cantgoback Junior Member

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    I'm under the impression that the gauges themselves are just not accurate enough to warrant much confidence in them. In my experience, the gas level depends on the slope of the ground. I noticed with prior cars that when parked on an incline facing uphill the gas level is lower than when parked on flat ground. The reported results on the computers are only as accurate as the gauges themselves are.