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Chevy Bolt - 200 mile range for $30k base price (after incentive)

Discussion in 'Electric Vehicles' started by FredTMC, Jan 9, 2015.

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  1. SageBrush

    SageBrush Active Member

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    The drag model says a combined 15.8 kW for air and tyres, so 2.2 kW for the rest.

    At 75 mph, 22 kW for air and road, so 22 + 2.2*75/65 = 24.54 kW total anticipated.
    That works out to 327 Wh/mile and presuming 59.5 kWh usable battery capacity, a range of ~ 182 miles.
     
  2. Topher

    Topher Energy Curmudgeon

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    What are you putting in the 'rest' category that scales linearly with speed?

    Thank you kindly.
     
  3. Jeff N

    Jeff N Active Member

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    HybridCars.com double-checked this claim with GM's press spokesman and the press rep says the actual result was 170 miles at 70 mph (not 92).

    The rep says the GM engineer who was quoted as making that claim either misspoke or was misunderstood.

    The new "170 miles at 70 mph" now seems perhaps pessimistic to me, offhand. I think we need to crowd-source some of these numbers for ourselves and find a consensus result. I'm not really trusting any of these sorts of numbers until that happens.
     
    • Informative x 1
  4. SageBrush

    SageBrush Active Member

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    Anything that spins :)

    The electronics should be a fixed power drain but I was too lazy to try and separate that component.
     
  5. SageBrush

    SageBrush Active Member

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    Agreed, probably wrong, but not as LOL wrong as 170 miles at 92 mph
     
  6. McRat

    McRat Active Member

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    • Like x 3
  7. Topher

    Topher Energy Curmudgeon

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    Rolling resistance already encompasses all the things that spin.

    Thank you kindly.
     
    • Disagree x 1
  8. SageBrush

    SageBrush Active Member

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    Huh

    I started from air resistance based on Cd, air density and frontal area, and tyre rolling resistance and car mass.
    The calculated forces exclude the drivetrain.
     
  9. brucet999

    brucet999 Active Member

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    Does this mean that the salesman who gave me a test drive was wrong when he told me, "range is 238 miles no matter how fast you drive"?! :)
     
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  10. SageBrush

    SageBrush Active Member

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    I hate to say this, but I'll guess that really happened.
     
  11. Saghost

    Saghost Active Member

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    I don't know, Bruce. Car salesman are known far and wide as the most reliable source of information about their cars - and you know you can trust them because they have absolutely no motive to mislead whatsoever.
     
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  12. brucet999

    brucet999 Active Member

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    How foolish of me to doubt. :)
    And for @SageBrush, yes, the Chevy salesman actually told me that range is same at any speed.
     
  13. TexasEV

    TexasEV Active Member

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    The sad thing is he probably believes that.
     
  14. PJFW8

    PJFW8 waiting impatiently for Model 3

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    Or the salesman who was not aware that the Volt could be plugged in.
     
  15. brucet999

    brucet999 Active Member

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    Bear in mind, though, that the liquid advantage is moderated by the necessity of dissipating the heat to the atmosphere via radiators, so the last step relies on the heat capacity of air. Of course, it is vastly easier and more efficient to use liquid in the cramped confines of the battery pack than to try to force air uniformly through the pack.
     
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  16. brucet999

    brucet999 Active Member

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    Wow. Thanks for posting that. I had no idea that GMs Volt had used up so much of their tax credit allotment. I had thought that Tesla would use theirs up long before GM.
     
    • Informative x 1
  17. SageBrush

    SageBrush Active Member

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    You would be right.
     
  18. gene

    gene Supporting Member

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    I sat in a Bolt the other day at an EV showcase at a local high school. I think the outside of the car looks decent, and the Bolt was bigger than I thought it was going to be. But no way I could own one. The seats are much less comfortable than even my base Leaf. The audio system was literally painful to listen to. The hard plastic "econo box" interior reminds me of a Honda Fit I once had which scratched easily and looked like hell within a few months. Interestingly, the i3 which I thought I'd never be interested in, well I rode all of 30 feet in it to move it to a different parking space. My opinion in those 30ft of i3 drive has resulted in my opinion 100% changed! Super easy to maneuver, very comfortable seating, good audio system, and a quality feel overall. Really, if the used i3's now at $20k would just drop a bit more I'd add one to my "fleet" of Turo cars.
     
  19. RiverBrick

    RiverBrick Active Member

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    A local automobile reporter drove a Bolt from Montreal to Quebec City today.

    9°F, light winds. Dry highway.

    Leaving Montreal with a full charge, the dash read 217 miles, not 238. Does it take into account weather or prior consumption?

    They stuck to the posted limit of 62 mph. For the the 174 mile trip, they got 2.42 miles per kWh and estimated the highway range in these conditions at 137 miles.

    They mention "keeping heat to a minimum" and not using the heated seats. (They must not know that the seats consume little energy.)

    Edit: full article if you read French or wish to use Google translate:

    Laval-Québec avec notre Chevrolet Bolt : la route sans le doute?

    Also, they most likely had Winter tires.
     
  20. brucet999

    brucet999 Active Member

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    How did they drive 174 miles on a 137 mile range?
     

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