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Thread: Gas mileage / MPG achievements (with optional MPG computer pics)

  1. #401
    Member Casey's Avatar
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    Quote Originally Posted by skyblue View Post
    Why coast in neutral?
    Maybe it's different because I have a manual? I'm still learning this car and fuel efficient driving in general. I know when I coast in neutral the engine runs at a lower RPM than it does when in 5th gear. It also coasts further.


        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 51.1 mpg (US) ... 21.7 km/L ... 4.6 L/100 km ... 61.4 mpg (Imp)


  2. #402
    Eggman's right: Coast in neutral if your goal is to decelerate (while using no fuel, until combustion resumes when engine RPM drops below a certain threshold).

    Coast in neutral if you want to maximize coasting distance while consuming very little fuel.

    Each technique is useful in different situations.

    Impressive numbers, Casey!

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 64.5 mpg (US) ... 27.4 km/L ... 3.6 L/100 km ... 77.4 mpg (Imp)


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    Casey (06-26-2021)

  4. #403
    Moderator inuvik's Avatar
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    Hmmm, this reminds me of a previous thread:

    https://mirageforum.com/forum/showth...-to-utilize-it

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 automatic: 40.4 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.5 mpg (Imp)


  5. #404
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    Quote Originally Posted by inuvik View Post
    Hmmm, this reminds me of a previous thread:

    https://mirageforum.com/forum/showth...-to-utilize-it
    Indeed, every gauge I've ever had can't work out engine braking.

  6. #405
    Member Casey's Avatar
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    Quote Originally Posted by inuvik View Post
    Hmmm, this reminds me of a previous thread:

    https://mirageforum.com/forum/showth...-to-utilize-it
    Wow, that's some serious gadgeting. A little above my level. Am I hurting my car by coasting in neutral or coasting in gear? I like coasting in neutral because of no engine braking and how much further I coast. All my roads are really straight and I can see red lights a long ways off. So, I prefer to coast as far as I can without slowing and likely the light will turn green before I get there.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 51.1 mpg (US) ... 21.7 km/L ... 4.6 L/100 km ... 61.4 mpg (Imp)


  7. #406
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    Quote Originally Posted by Casey View Post
    Wow, that's some serious gadgeting. A little above my level. Am I hurting my car by coasting in neutral or coasting in gear? I like coasting in neutral because of no engine braking and how much further I coast. All my roads are really straight and I can see red lights a long ways off. So, I prefer to coast as far as I can without slowing and likely the light will turn green before I get there.
    No it won't do anything really, it just means your combusting all the way to your stop versus no combusting until you hit idle RPM.

    I notice the CVT does odd things when you crest a hill and take your foot of the gas, I can't quite work out what it's doing though, it seems to be almost downshifting ratios to apply engine braking, all I know is that the rpm suddenly goes up, might be something weird with my car only though.

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    Casey (06-28-2021)

  9. #407
    Member Casey's Avatar
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    Quote Originally Posted by skyblue View Post
    No it won't do anything really, it just means your combusting all the way to your stop versus no combusting until you hit idle RPM.

    I notice the CVT does odd things when you crest a hill and take your foot of the gas, I can't quite work out what it's doing though, it seems to be almost downshifting ratios to apply engine braking, all I know is that the rpm suddenly goes up, might be something weird with my car only though.
    Thanks! Now I understand and should adjust my driving technique. Let the engine slow it down if I'm actually stopping or neutral coast if I'm just going downhill or something.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 51.1 mpg (US) ... 21.7 km/L ... 4.6 L/100 km ... 61.4 mpg (Imp)


  10. #408

    78.5 MPG tank

    Potentially the last fill-up for Mirage #2 (assuming I end up selling it and keeping Mirage #3, and not vice-versa)...

    78.5 MPG US or 3.0 L/100 km over 757 km.

    This was just a test to see if I could break 75 MPG using a lot of "pulse & glide". Also, the alternator was disconnected for probably 90% of the tank.

    Is 80+ MPG possible? Sure. How much effort do you want to put in, and how slow an average speed are you willing to accept?

    I think the ScanGauge said my average speed was around 30 mph for the tank. Though that includes the average being reduced by time spent stopped at stop signs, lights, when parking, etc. The average driving speed would have been around 40-ish, if I had to guess.

        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 64.5 mpg (US) ... 27.4 km/L ... 3.6 L/100 km ... 77.4 mpg (Imp)


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  12. #409
    Moderator Eggman's Avatar
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    Quote Originally Posted by MetroMPG View Post
    Potentially the last fill-up for Mirage #2 (assuming I end up selling it and keeping Mirage #3, and not vice-versa)...

    78.5 MPG US or 3.0 L/100 km over 757 km.

    This was just a test to see if I could break 75 MPG using a lot of "pulse & glide". Also, the alternator was disconnected for probably 90% of the tank.

    Is 80+ MPG possible? Sure. How much effort do you want to put in, and how slow an average speed are you willing to accept?

    I think the ScanGauge said my average speed was around 30 mph for the tank. Though that includes the average being reduced by time spent stopped at stop signs, lights etc. The average driving speed would have been around 40-ish, if I had to guess.
    Wow, great numbers. Did you use an engine kill switch?

        __________________________________________

        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)


  13. #410
    Silly numbers. Impractical numbers.

    And, yes, kill switch.


        __________________________________________

        click to view fuel log View my fuel log 2014 Mirage SE 1.2 manual: 64.5 mpg (US) ... 27.4 km/L ... 3.6 L/100 km ... 77.4 mpg (Imp)


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