When you fill up gas tank...

Discussion in 'Prius c Fuel Economy' started by Justin Hargrove, Mar 17, 2018.

  1. Justin Hargrove

    Justin Hargrove New Member

    Joined:
    Jun 6, 2017
    16
    6
    1
    Location:
    Hesperia ca
    Vehicle:
    2015 Prius c
    Model:
    Two
    When you fill up your gas tank, how many cruising miles does your car say? For the most part mine says 370 miles unless I add a bit more after gas pump stops. The most I’ve seen was 389 miles.
     
    Starship16 likes this.
  2. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    I have been unable to get my car to talk to me. However, when tanking up I always get over 100 mpg and try for a 1000 mile/ tank useage. the last three times were 104, 106 and 96. The mpg reading on my dash generally
    displays about the same, usually a bit more, like 110 mpg. I tend to agree with the manual system, although it’s fraught with errors, like: how full is full? Hope this answers your question.
     
  3. Sam Spade

    Sam Spade Senior Member

    Joined:
    Dec 3, 2016
    2,036
    974
    0
    Location:
    USA
    Vehicle:
    2017 Prius c
    Model:
    Four
    Not at all. He has a C.
    The information about your model does not apply.
     
    roadrunner likes this.
  4. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    I noticed that, his post came to me by Email. So I answered it from my perspective. I should think the OP may notice what I’m driving. Anyway I notice that unlike how it was before the last change, everything is discombobulated with very little order. I also like to read the real action. The Prime is so boring.
     
  5. davids45

    davids45 Member

    Joined:
    Nov 23, 2016
    97
    120
    0
    Location:
    Chatswood, NSW
    Vehicle:
    2016 Prius c
    Model:
    One
    G'day,

    I usually see about 680km. Feel free to practice your x16 tables (as a 1.6 divisor) to get the rough equivalent miles ;) .

    I expect this is a safety-first under-estimate, given the actual distance depends so much on how the car is driven, the roads, and the weather. City-only driving gives me more than this before the km figure gets to near 0 (often still have a couple of blips on the fuel gauge), motorway-interstate driving is much more consumptive/expensive so this full-tank estimate is about right for a >600km country trip.

    David S.
     
    Andyprius1 likes this.
  6. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    680KM X .625 = 425 miles So you are doing a bit better than Justin.
     
  7. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    As David 45 said, it’s all about conditions, weather, air pressure, temperature type of traffic. and lastly but not leastly, all these Prii calculate your future mileage based on your past driving so that number indicating range
    is all very subjective. It’s a guess.
    However, you can change it and increase that # by better driving. Meaning, slower speeds, steady speeds, more gliding, etc.
     
  8. dubit

    dubit Active Member

    Joined:
    Dec 3, 2016
    369
    209
    5
    Location:
    Indiana
    Vehicle:
    2016 Prius c
    Model:
    Two
    If I remember correctly, my last fill up was 412 miles. I did see those low numbers you mentioned estimated myself during the winter. But now that it's getting warmer, I cleared my vehicles history to give me a somewhat more accurate estimate.
     
  9. pulltab

    pulltab Junior Member

    Joined:
    Oct 26, 2015
    21
    8
    0
    Location:
    Oceanside, CA
    Vehicle:
    2015 Prius c
    Model:
    One
    Mine also varies by many miles... sometimes after a "fill up" showing 393...then other times up to 405...seemingly like I am putting the same amount of gas in... don't know why it fluctuates so much... I understand it is just an "estimate", so not really interpreted as gospel on the actual mileage left.
     
    Andyprius1 likes this.
  10. uber2016

    uber2016 Junior Member

    Joined:
    Sep 17, 2016
    12
    9
    0
    Location:
    US
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    dubit and Andyprius1 like this.
  11. davidc83

    davidc83 Member

    Joined:
    Oct 14, 2015
    64
    29
    0
    Location:
    Scottsburg, Indiana
    Vehicle:
    2015 Prius c
    Model:
    Five
    I have noticed my cruising range after fill-up is based on my previous mpg on the previous tank if gas overall mpg

    Z917VL ?
     
    Andyprius1 likes this.
  12. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    The gas tank fill up will always vary, nothing can be done except to average all your readings.
    In ref to post 9.
     
    #12 Andyprius1, Mar 30, 2018
    Last edited: Mar 30, 2018
  13. Mendel Leisk

    Mendel Leisk Lapsed Cargo Cultist

    Joined:
    Oct 17, 2010
    27,789
    17,132
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I've never looked. (n)
     
  14. SwhitePC

    SwhitePC Active Member

    Joined:
    Apr 11, 2013
    480
    187
    0
    Location:
    ca
    Vehicle:
    2013 Prius c
    Model:
    Four
    In cold weather, it would read 330s (+ the 30-50 last 1.5gal that I know the car doesn't show once it hits 0 and beeps)

    AND

    In hot weather, I've had it read near 400s (+ the 30-50 last 1.5gal after the 0 beep)
     
    Andyprius1 likes this.
  15. ztanos

    ztanos All-around Geek!

    Joined:
    Jan 10, 2013
    3,031
    939
    40
    Location:
    Cumming, Georgia
    Vehicle:
    2012 Prius c
    Model:
    Four
    I've seen as high as 485 (before the 1.5), but that was when I was doing my old commute and getting 60 mpg tanks.
     
  16. mohsin

    mohsin Junior Member

    Joined:
    Nov 3, 2017
    71
    45
    0
    Location:
    Dubai, UAE.
    Vehicle:
    2014 Aqua
    Model:
    N/A
    My car shows 780 ~790kms
     
  17. mohsin

    mohsin Junior Member

    Joined:
    Nov 3, 2017
    71
    45
    0
    Location:
    Dubai, UAE.
    Vehicle:
    2014 Aqua
    Model:
    N/A
    Strangely this time it showed some 930kms. I presume it is calculated from the present avg.
     
  18. mohsin

    mohsin Junior Member

    Joined:
    Nov 3, 2017
    71
    45
    0
    Location:
    Dubai, UAE.
    Vehicle:
    2014 Aqua
    Model:
    N/A
    Every time its different. Most probably it derives it from the averages.

    IMG_2482.JPG IMG_2483.JPG IMG_2484.JPG
     
  19. Andyprius1

    Andyprius1 Senior Member

    Joined:
    Feb 4, 2013
    2,152
    784
    1
    Location:
    Cool CA
    Vehicle:
    2017 Prius Prime
    Model:
    Plug-in Base
    My miles per tank: always over 1000 miles.
    The question on calculating is: How full is full, did you spill some gasoline? What is lost from evaporation?
    Do you always stop pumping at exactly the same fill-up. are you sure? prove it.
     
  20. Mendel Leisk

    Mendel Leisk Lapsed Cargo Cultist

    Joined:
    Oct 17, 2010
    27,789
    17,132
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    You obviously do not stop pumping at the same degree of fullness. But it is not critical to do so: a slightly fuller fill on one tank will balance out on the next. The more consecutive tanks you calculate, the more deadly your overall fuel economy calculation becomes.

    If you stop at first shut off you won't be spilling gas, and the tank is well sealed: evaporation is minuscule.
     
    Starship16 and Andyprius1 like this.
Loading...