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Another look at EPA "Test Car Data List"

Discussion in 'Gen 4 Prius Fuel Economy' started by bwilson4web, Oct 30, 2016.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    I was looking a Fred's TDI (TDIClub Forums - View Single Post - Well, ****.) where good Prius Friend @bhtooefr has been sharing his Prius experience. So I went back to the EPA "Test Car Data List" and generated this table in descending, MPG average of low and high MPG to share here:
    Model(test_vehicle.config) low MPG high MPG
    1 PRIUS Eco(16-ZV2H.1) 50.7 84.1
    2 PRIUS Eco(16-ZV2H.0) 50.1 84.1
    3 PRIUS Eco(16-ZV2H.2) 51.6 82.5
    4 PRIUS(16-ZV1H.2) 48.6 78
    5 PRIUS(16-ZV3H.2) 48.6 77.3
    6 PRIUS(16-ZV1H.1) 45.5 71.1
    7 PRIUS(16-ZV2H.3) 56.3 58.8
    8 PRIUS(16-ZV3H.1) 42.9 64.9
    9 PRIUS(16-ZV2H.5) 51.3 51.9

    • 16-ZV2H.0-.1-.2 (PRIUS ECO in ECO configuration) - highest performance
    • 16-ZV2H.3-.5 (non-ECO configuration) - middle and worst, used for experimental (age?) tests
    • 16-ZV1H.1-.2 (Level 3) - middle of the pack
    • 16-ZV3H.1-.2 (Level 4) - middle of the pack
    What this means is the PRIUS ECO is the optimum configuration and as long as the standard equipment is in use and operational, it is going to work best. However, it is subject to a loss of performance if say the tires are changed.

    As for the Level 3 and 4, not really a lot of difference in MPG. Just choose the creature comforts desired.

    Bob Wilson
     
    #1 bwilson4web, Oct 30, 2016
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  2. bisco

    bisco cookie crumbler

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    the big thing with tyres is that people have reported lower mileage with the exact same replacements sometimes in the past. i wonder if buying from the dealer would eliminate this.
     
    #2 bisco, Oct 30, 2016
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  3. bwilson4web

    bwilson4web BMW i3 and Model 3

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    It doesn't.

    I go by maximum tire sidewall pressure and nothing else. I know a few tire companies have tried to advocate for their particular 'flavor' but absent a credible, independent test, I go by sidewall pressure.

    Bob Wilson
     
    #3 bwilson4web, Oct 30, 2016
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  4. bisco

    bisco cookie crumbler

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    that would bother me about the eco, wondering if replacement tyres would someday destroy my mpg's. i would like to drive one though, to see if there are any noticeable oddities, compare to the other models.
     
    #4 bisco, Oct 30, 2016
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  5. alanclarkeau

    alanclarkeau Senior Member

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    Is there any correlation between batteries - Li-ION or NiMH? (Tho I guess it doesn't really matter in some ways - we don't get a choice down here - just interested.)
     
    #5 alanclarkeau, Oct 30, 2016
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  6. bwilson4web

    bwilson4web BMW i3 and Model 3

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    To the best of my knowledge, no one has done an A-B-A test where a Prius starts with an NiMH battery; replaces it with an LiON, and; back to an NiMH. However, there is one observation to share.

    The EPA data shows the LiON battery equipped Prius to show up with both the best and worst performance. This suggests NiMH vs LiON is not definitive in predicting Prius performance.

    Bob Wilson
     
    #6 bwilson4web, Oct 30, 2016
    Last edited: Oct 30, 2016
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  7. bisco

    bisco cookie crumbler

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    the only gen 4 with nimh is package 2.
     
    #7 bisco, Oct 30, 2016
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  8. alanclarkeau

    alanclarkeau Senior Member

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    Thanks - reading the specs, I suspected there wasn't going to be much definitive difference other than maybe the mass of the batteries. It seems both batteries have vastly different character, but similar capacities. But there's been a scathing comment in just about every PRIUS Media report here in Australia "...still old-school Ni-MH batteries ..." - which I couldn't see the relevance of. Personally, I'm happy with tried and proven Ni-MH. Maybe when I get my 5 seater PRIME?

    (And I wonder if it would even be possible to swap a Ni-MH across to being a Li-ION without big changes in computer configurations or even hardware.)
     
    #8 alanclarkeau, Oct 30, 2016
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