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EV Energy Consumption (EPA) Compared By Vehicle/Trim

Discussion in 'EV (Electric Vehicle) Discussion' started by iplug, Apr 1, 2019.

  1. iplug

    iplug Senior Member

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  2. Salamander_King

    Salamander_King Senior Member

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    OK, this means right now the best in the league is getting 4.44 miles/kWh in city. Knowing my PRIME gets around 4.5 miles/kWh in city and still cost more to drive EV than using gas with HV for my situation. I realize there will be no cost saving for me to switch to BEV until I install PV on my roof.
     
    #2 Salamander_King, Apr 1, 2019
    Last edited: Apr 1, 2019
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  3. davidtm

    davidtm Member

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    I suspect that converting from MPGe introduces some error.

    2PZC5 ?
     
  4. Salamander_King

    Salamander_King Senior Member

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    Are you referring to my number from PRIME? If so, my 4.5 miles/kWh is average of 20 months of my actual EV driving. I think PRIME EPA rated MPGe is 133, which is 3.946 miles/kWh assuming 33.7 kilowatt-hours of electricity is the equivalent to one gallon of gas. EPA rated number would put PRIME at 253.4 Wh/mile, so that would be on par with M3.
     
  5. Zythryn

    Zythryn Senior Member

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    No, it wouldn't as the conversion is a simple mathematical function.
    In this case though, since only BEVs are being compared, there is little use for converting to MPGe.
     
  6. jerrymildred

    jerrymildred Senior Member

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    Those are terrible!! Over the past four days, I've been averaging just under 6 miles/kWh. If I'm not mistaken, that 167 Wh/mile.

    I think my worst day yet was 5.2 mile/kWh. That would be just over 192 Wh/mile.

    I guess they have heavy feet. :D
     
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  7. davidtm

    davidtm Member

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    Points well taken. I realize that my major criticism boils down to "YMMV".

    2PZC5 ?
     
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  8. Zythryn

    Zythryn Senior Member

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    These number are from the wall and include charger/EVSE losses.
     
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  9. Salamander_King

    Salamander_King Senior Member

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    To be fair EPA rated number for PRIME at 253.4 Wh/mile maybe easily exceeded in temperate regions where @jerrymildred is, but it would be difficult for me to pull off such feat in a long term. I can get similar numbers as Jerry's during brief summertime, but during winter, the battery efficiency plummets. Still, I am able to get year around average better than EPA rating, so I am sure many BEV drivers can also achieve better real-world efficiency than advertised. Of course, there probably are an equal number of people who are getting less than what's advertised.
     
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  10. jerrymildred

    jerrymildred Senior Member

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    I stand corrected. I went back and found a 4.9. :oops:

    It would take some effort to get that figure for me with much accuracy. I'd have to run the EV range out and reset my meter that I charge from. But it takes roughly 6 kWh to charge the battery. If that gets me 34-36 miles (about my average), that's just under 6 miles per kWh. A more accurate measurement might be a little over 6 kWh, but at least it's in the ballpark. So, if I increase the power from the wall estimate by 10%, it's still under 184 Wh/mile.

    Next time I run the battery clear down and charge at home, I'll reset my electric meter first to get a more exact number.
     
  11. will the engineer

    will the engineer Active Member

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    are my eyes seeing this correctly? Prius is not up there.

    LOL. Jag way at the bottom. As always
     
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  12. jerrymildred

    jerrymildred Senior Member

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    Yup!!
     
  13. Zythryn

    Zythryn Senior Member

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    The list shows BEVs only, no PHEVs.
    I'd love it if there was a Toyota BEV, really I would:)
     
  14. will the engineer

    will the engineer Active Member

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    Ahh thank you!
     
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  15. Salamander_King

    Salamander_King Senior Member

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    I did exactly that for three months. Daily charge at wall recorded and daily EV range recorded, and yes you are correct, the number the car display is about 10-15% better. With Prime, recording actual EV range is very cumbersome, especially if you do not run EV range to zero every day.
     
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  16. jerrymildred

    jerrymildred Senior Member

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    I really miss the EV/HV percentage graph from the PiP.
     
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  17. markabele

    markabele owner of PiP, then Leaf, then Model 3

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    Hard to compare our short range PiP EV performance to full BEV's. Driven in different circumstances at different speeds.
     
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  18. wjtracy

    wjtracy Senior Member

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    Prime PHEV is impressive, but if you use any ICE, isn't the kWhr/mile going to look "artificially" better than BEV becuase you are getting some electric generated by the ICE?
     
  19. Salamander_King

    Salamander_King Senior Member

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    The numbers I and Jerry posted here are from EV only drives without any ICE use. Yeah, it has only 25-35 miles of ranges, but for that distance, it runs very efficiently. Still for me, it is not efficient enough. HV drive using gas is more economical for my situation.
     
    #19 Salamander_King, Apr 3, 2019
    Last edited: Apr 3, 2019
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  20. Zythryn

    Zythryn Senior Member

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    This is not the case. HV drive used gasoline, which is far less efficient, isn't it?