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Emission Comparison: Prius / HS250h / Insight / Civic Hybrid / Jetta (Gas+TDI) / WRX STI

Discussion in 'Gen 3 Prius Main Forum' started by usbseawolf2000, Jul 1, 2009.

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  1. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Non-Methane Organic Gases
    NMOG2.GIF

    Carbon Monoxide
    CO2.GIF

    Nitrogen Oxide
    NOx2.GIF

    Highway Nitrogen Oxide
    Hwy NOx2.GIF

    Overall
    [​IMG]

    Summary:

    • Jetta gasoline is cleaner than TDI despite heavy marketing of the "Clean Diesel".
    • Civic Hybrid is generally cleaner than the non-hybrid version, except for CO.
    • Lexus HS 250h is cleaner than the Insight, except highway NOx.
    • Prius is the king of clean car.
    • Subaru WRX STI is the dirtiest of all. It is 10x to 27x dirtier than the Prius due to turbo.
    • Jetta TDI is cleaner than WRX STI but STI has more than 2x hp.
    Unit:

    NMOG - g/mi
    CO - g/mi
    NOx - g/mi
    HCHO mg/mi
    PM - g/mi
    Hwy NOx - g/mi
     

    Attached Files:

    #1 usbseawolf2000, Jul 1, 2009
    Last edited: Sep 25, 2015
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  2. malauber

    malauber New Member

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    What units are these measurements recorded in?
     
    #2 malauber, Jul 1, 2009
  3. Tideland Prius

    Tideland Prius Moderator of the North
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    Cool. Where'd you get the info from? Can you imagine before we had ULEV cars? I remember our Corolla was a LEV and then our Camry was ULEV and the Prius was SULEV/PZEV-AT lol... keep going up the scale.
     
    #3 Tideland Prius, Jul 1, 2009
  4. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Everything is in gram per mile except HCHO but it is always N/A.
     
    #4 usbseawolf2000, Jul 1, 2009
  5. usbseawolf2000

    usbseawolf2000 HSD PhD

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    #5 usbseawolf2000, Jul 1, 2009
  6. MaggieMay

    MaggieMay Active Member

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    Thanks for sharing this - can't wait to show it to my brother who thinks 'clean deisel is not an oxymoron. :rolleyes:
     
    #6 MaggieMay, Jul 1, 2009
  7. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Hybrid Models Comparison

    It is surprising to see Ford Fusion hybrid not as clean as RX 450h SUV! Toyota and Lexus hybrids are among the cleanest cars available.

    Camry hybrid produce no Nitrogen Oxide? That's the data straight from CARB.

    CO.GIF Hwy NOx.GIF NMOG.GIF NOx.GIF Overall.jpg
     
    #7 usbseawolf2000, Jul 1, 2009
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  8. a_gray_prius

    a_gray_prius Rare Non-Old-Blowhard Priuschat Member

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    Its awesome you dropped the STi in there :)
     
    #8 a_gray_prius, Jul 1, 2009
  9. a priori

    a priori Canonus Curiosus

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    Thank you for sharing this data with us (and for providing a reference).

    How about comparing other popular vehicles, though? Is there really that much difference among the Prius, HCH, Insight and FFH when you compare them all to regular Camry or Chevy Malibu or a Ford F150 or a Kia Something?
     
    #9 a priori, Jul 1, 2009
  10. carz89

    carz89 I study nuclear science...

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    How does the Hummer compare? Of course everyone knows that the hummer is cleaner overall on the environment than the Prius. ;)

    It's interesting that two of the primary market competitors of the Prius, the 2010 Insight and the Ford Fusion, put out an order of magnitude more pollutants than the new Prius.
     
    #10 carz89, Jul 1, 2009
  11. usbseawolf2000

    usbseawolf2000 HSD PhD

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    CARB does not test Hummer because of the weight reasons I believe.
     
    #11 usbseawolf2000, Jul 1, 2009
  12. Tideland Prius

    Tideland Prius Moderator of the North
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    Yup. It's over the weight limit for a personal vehicle.
     
    #12 Tideland Prius, Jul 1, 2009
  13. wdross

    wdross New Member

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    Thanks for the info. What surprises me is that the emissions are so low while both the mpg and horsepower increased on the 2010 Prius. It truely is close to being unbelieveable. I guess it just takes a proper mind set to create such a phenomenal vehicle.
     
    #13 wdross, Sep 21, 2009
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  14. antiflash

    antiflash New Member

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    LoL about the STi as well :) that was actually one of the other cars I was looking at so it makes me feel better that I did go with the Prius vs STi.
     
    #14 antiflash, Sep 21, 2009
  15. cossie1600

    cossie1600 Active Member

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    The emission output will double when the car runs at full boost :) It's a different kind of car, get whatever that fits the driver better
     
    #15 cossie1600, Sep 21, 2009
  16. PriusSport

    PriusSport senior member

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    Just think how much better off the world would be if the Prius (or its equivalent) was the only car you could buy. There would be no dependence on Middle East oil, hence no strategic reason to spend trillions over there trying to change governments (it really is all about oil). And maybe we would stand a chance in controlling carbon emissions. I'm not terribly optimistic...
     
    #16 PriusSport, Sep 21, 2009
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  17. usbseawolf2000

    usbseawolf2000 HSD PhD

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    I posted a new comparison with 2011 Honda CRZ.
     
    #17 usbseawolf2000, May 14, 2010
  18. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Re: Emission Comparison: Prius / HS250h / Insight / Civic Hybrid / Jetta (Gas+TDI) / WRX STIH

    I added Chevy Volt to the comparison. Volt did not even qualify for SULEV. It got ULEV.

    I added evaporative emission chart to compare. TDI does not have data for it. I am not sure if it is too low to report or they did't test it.

    Volt.png Volt_evap.png

    Source
     
    #18 usbseawolf2000, Oct 19, 2010
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  19. SageBrush

    SageBrush Senior Member

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    Nice! Thanks for posting.
    The outlier vehicle makes it hard to see difference in the other cars though.

    Do you have Prius '10 vs Prius '04-'09 ?
     
    #19 SageBrush, Oct 19, 2010
  20. SageBrush

    SageBrush Senior Member

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    I imagine it means below limit of detection.
     
    #20 SageBrush, Oct 19, 2010
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