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Thread: 2017 Mirage EPA numbers (changed from 2014/2015?)

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    2017 Mirage EPA numbers (changed from 2014/2015?)

    Are not out yet, but will they be higher?

    Back of the napkin calculations show CD reduction from .28 to .27 should be good for +1MPG on highway.


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        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 46.4 mpg (US) ... 19.7 km/L ... 5.1 L/100 km ... 55.7 mpg (Imp)


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    Moderator Eggman's Avatar
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    To my untrained eye, the front fascia on the 2017 looks like it has more aerodynamic drag than the 2014/15.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 49.6 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.5 mpg (Imp)


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    Quote Originally Posted by Eggman View Post
    To my untrained eye, the front fascia on the 2017 looks like it has more aerodynamic drag than the 2014/15.
    That was my thought too but we'll have to wait and see.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.5 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.6 mpg (Imp)


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    Fuel economy might improve based on the engine improvements brought about by the roller cams. I wouldn't expect any aerodynamic improvement.

    I would really like to see the final drive gearing found in European models.

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 49.6 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.5 mpg (Imp)


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    Moderator Eggman's Avatar
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    Apparently the front air dam is part of the aerodynamic improvements.
    Quote Originally Posted by 91cavgt View Post
    Purposefully Aerodynamic
    The 2017 Mitsubishi Mirage's outstanding efficiency is the result of a number of key design elements engineered into the vehicle. The fascia bumper features a chiseled crease for a very smooth airflow. The front tire air dam is optimized, and a rear tire air dam is added, to reduce drag resistance. The shape of the rear bumper is optimized for better air flow, while the angle of the rear spoiler has been changed to reduce lift, while the side surface is changed to reduce drag. These aero enhancements help the 2017 Mirage achieve a very low coefficient of drag at only 0.27 (Cd).
    Source: http://media.mitsubishicars.com/chan...-kit#release-0
    I guess their tests prove otherwise!

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        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 49.6 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.5 mpg (Imp)


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    BTW reduced aerodrag, engine improvement and final drive optimization 5%+ MPG improvements are possible. Can't wait!

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 46.4 mpg (US) ... 19.7 km/L ... 5.1 L/100 km ... 55.7 mpg (Imp)


  7. #7
    Quote Originally Posted by cyclopathic View Post
    final drive optimization
    Where did you see info about gearing changes? I thought the specs Mitsu posted showed the same ratios as the 2014/2015.

    --

    Regardless, if the drag reduction alone nets a 1 mpg highway improvement, that's +0.5 mpg on the combined rating.

    If they also optimized MIVEC with the more efficient roller camshaft we could see even more, including a bump on the city cycles.

    +1 mpg all around sounds reasonable.

    Also worth noting: if the aero tweaks to the USDM Mirage netted a 0.01 Cd reduction (from 0.28 to 0.27), I wonder if the Euro/Japan version will come in at 0.26, since it was already at 0.27.

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage ES 1.2 manual: 63.2 mpg (US) ... 26.9 km/L ... 3.7 L/100 km ... 75.9 mpg (Imp)


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    Actually combined EPA is 2/3 city (don't ask why). I had this argument in the past.

    Simple calculations show that with 15,000mi annual 2/3 amounts to 10k. Take 250 day driving and it comes to 40mi a day in the city. Speed limit in city 25mph, and avg speed 16mph. 40mi = 2.5hr a day of city driving. Does this make sense?

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 46.4 mpg (US) ... 19.7 km/L ... 5.1 L/100 km ... 55.7 mpg (Imp)


  9. #9
    I thought EPA's combined MPG rating was weighted around 50% highway vs. city.

    Ah, here it is:

    ...combined city and highway fuel economy estimates, which assume 55% city driving and 45% highway
    Model Year 2015 Fuel Economy Guide
    https://www.fueleconomy.gov/feg/pdfs/guides/FEG2015.pdf

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage ES 1.2 manual: 63.2 mpg (US) ... 26.9 km/L ... 3.7 L/100 km ... 75.9 mpg (Imp)


  10. #10
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    Quote Originally Posted by MetroMPG View Post
    I thought EPA's combined MPG rating was weighted around 50% highway vs. city.

    Ah, here it is:



    Model Year 2015 Fuel Economy Guide
    https://www.fueleconomy.gov/feg/pdfs/guides/FEG2015.pdf
    Still 2hr 4min a day in city traffic is unreasonable as national average.

    IMHO they just want it b/C it gave realistic results


        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 46.4 mpg (US) ... 19.7 km/L ... 5.1 L/100 km ... 55.7 mpg (Imp)


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