thirty thousand mile mark

Discussion in 'Gen 4 Prius Fuel Economy' started by krmcg, Mar 2, 2018.

  1. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    I have (almost) reached the 30,000 mile mark.
    Calculated MPG 61.7
    Displayed MPG 64.5
    Average cost per mile .043 cents - total cost $1291.36
    Average 623 miles per tank - 10.1 gallons per fill-up
     
  2. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    I tried to attach the spreadsheet, but won't take...
     
  3. Mendel Leisk

    Mendel Leisk Lapsed Cargo Cultist

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    Make sure it's xlsx format, not xls. The latter is older format, Priuschat won't accept.
     
  4. bisco

    bisco cookie crumbler

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    well done!(y)
     
  5. sclevine

    sclevine Member

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    @krmcg

    Nice, that's awesome mileage!

    Question - how do you get 10.1 gallons on average? How far past 0 miles-to-go do you let it go? Or do you top it off as much as possible? 9.7 is about as high as I've gotten.
     
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  6. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    I almost always wait until the "empty" light comes on before I fill the tank. Even go past the DTE is down to 0 at times. l have had a few 800+ mile tanks. Not particularly smart of me I know, but I've never run out of gas. Just like to live on the edge I guess. I do not "top off" the tanks, at most I go to the next round dollar amount after the first click. The most gas I have ever put in was 11.2 gallons.
     
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  7. CooCooCaChoo

    CooCooCaChoo Active Member

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    One more month before I hit 10k myself. Still going strong like the day you bought her?
     
  8. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    better than ever. I have retired and no longer have the daily eco-friendly commute that I once had, so my MPGs have generally decreased. But I can still get great mileage when the road allows... The lifetime numbers would be even better but I took a 5,000 mile road trip last summer and averaged only 50.9 MPG on that trip.
     
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  9. padroo

    padroo Senior Member

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    I don't drive near as much retired as I did when I worked. Owning a Prius and not driving as much makes gas one of my very minor monthly expenses. When grass cutting season comes I spend more on mower gas than car gas. lol

    It would be nice if Toyota made a Prius mower. :)
     
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  10. axle2152

    axle2152 Active Member

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    I must drive a lot...I guess that would make sense given that I live in the sticks in the appalachian mountains. I don't have the exact odometer but I'm somewhere around 43,000-44,000 miles and purchased mine back in August 2016. The lifetime mileage 55.2 MPG (US). The best single tank was 666.1 miles and used 10.459 gal at 63 MPG. Worst tank was 354.5 miles and used 8.063 gal at 44 MPG.Most of my driving is rural at speeds 45-70 MPH, not much of city or interstate driving unless I am on a trip. Where you drive, when you drive and how you drive make all the difference and why there are those who can achieve 800 miles on a tank and those who can barely crack 500.

    Since I've got the OBDII reader I have learned a few things. If the HV battery is cold, or under 83 degree, you won't get the full 21kW until it has warmed up, along with all the other factors regarding temperature. So the longer your commute in cold weather your fuel economy won't take a big hit, provided everything gets warmed up.
     
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  11. padroo

    padroo Senior Member

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    That makes sense because as you draw power from a battery it will make it's own heat
     
  12. axle2152

    axle2152 Active Member

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    The power output is limited until the battery gets over 80-85 F, which in cold weather that will probably take a while, longer than most people would be commuting. In most situations you really have to drive in stop and go traffic, city traffic or drive fairly aggressive to heat the battery up. The battery heating up is technically wasted energy, the more efficient something is (in this case the battery) the less heat (and other forms of energy) is created.
     
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  13. bbald123

    bbald123 Thermodynamics Law Enforcement

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    Gently up and downhill stretches at 50-65 mph help with this too as the regenerative braking and electric motor assist move quite a bit of current in and out of the battery thus warming it quite efficiently.
     
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  14. RCO

    RCO Senior Member

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    Sadly, the sheep which designed our Cornish highway routes didn't consider gentle climbs and descents in their methodology.
     
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  15. bbald123

    bbald123 Thermodynamics Law Enforcement

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    Indeed, Geografie uber alles!
     
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