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Thread: Auto stop@go recall. Side effects

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    Auto stop&go recall. Side effects

    Today my Space Star got a firmware update due to the AS&G recall. On my way back (about 50km) I saw the AS&G light went on later than I was used to. That was to be expected.

    More interesting was the economy gauge. I got 26.3km/L on my way home (mostly highway), while I got 22.5km/L on my way out. The garage is about 60 meters higher than my home, so a bit better economy is to be expected, but not more than about 1km/L. Actually I can not recall ever to have seen the economy gauge higher than 26km/L, and the conditions were not optimal (5C, a bit rainy, highway).

    So what happened? Is the car more economical, or is the gauge less accurate? The 'B' gauge used to be about 3% too pessimistic, so I think the 'A' gauge had the same aberration. If the economy didn't change, I guess the gauge is now 12% too optimistic. (26.3 where I expected about 23.3)

    The future will tell.


    Last edited by Space Wolf; 03-13-2019 at 08:20 AM.

        __________________________________________

        click to view fuel log View my fuel log 2013 Space Star Cleartec Intense 1.0 manual: 53.6 mpg (US) ... 22.8 km/L ... 4.4 L/100 km ... 64.4 mpg (Imp)


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    Daox (04-15-2019),inuvik (03-12-2019),Rockabilly Manta (04-15-2019)

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    The future has spoken. Between 13-3 and 10-4 my car drove 1805 km, using 74L, which is 24.4km/L (57.4mpg). About the same period last year, between 11-3 and 16-4, it was 2226 km, using 100.4L, which is 22.2km/L, 52.2mpg.

    Based on this numbers, the car is 10% more economical. So what happened? I have a list of hypotheses:

    1. Mitsubishi actually managed to provide a firmware update which gives a 10% higher economy.
    2. There is some self learning algorithm in the motor management, which adapts to the drive style of the owner, This has been reset, and my style is different than that of the previous owner.
    3. There is some self learning algorithm, which adapts to the actual engine parameters. This has been reset, and the parameters have changed as function of the wear.
    4. The firmware update has changed the accuracy of the odometer, on which both the internal economy gauge as my calculations are based.


    Thinking about 1, I can say that AFAIK this was the first firmware update the car ever got. It's probably manufactured in the end of 2012, when the car was only about 6 months in production. So maybe such a jump is possible.
    2. When such an algorithm exists, I would expect it to be adapting itself continuously. Meanwhile I have made more kilometers than the previous owner, so I wouldn't expect such a jump on resetting the algorithm.
    3. About the same as 2.
    4. I don't think so. Nearby is some speed indicator at the side of the road, which tells how fast you are driving (to stimulate to comply with the speed limit). The speed indicator of my car was and is on par with this sign. I think I would have noticed a difference of 10%.

        __________________________________________

        click to view fuel log View my fuel log 2013 Space Star Cleartec Intense 1.0 manual: 53.6 mpg (US) ... 22.8 km/L ... 4.4 L/100 km ... 64.4 mpg (Imp)


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    Moderator Eggman's Avatar
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    Temperatures can also have an impact on fuel consumption on these cars.

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage ES 1.2 manual: 49.5 mpg (US) ... 21.1 km/L ... 4.7 L/100 km ... 59.5 mpg (Imp)


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    Administrator Daox's Avatar
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    What was the claimed reason for the auto stop&go recall?
    Custom Mirage products: Cruise control kit, Glove box light, MAF sensor housing, Rear sway bar, Upper grill block

    Current project: DIY Nitrous oxide setup for ~$100

        __________________________________________

        click to view fuel log View my fuel log 2015 Mirage DE 1.2 manual: 45.4 mpg (US) ... 19.3 km/L ... 5.2 L/100 km ... 54.6 mpg (Imp)


  7. #5
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    Quote Originally Posted by Eggman View Post
    Temperatures can also have an impact on fuel consumption on these cars.
    Ah, hypothese #5. According to the KNMI (Royal Dutch Meteorological Institute), the mean temperature in March 2018 was 5.0C, while in 2019 it was 8.2C. (source). Numbers of April this year are not yet available. (Fortunately. If they were I would start to doubt about my mental health).
    So yes, this year it was a bit warmer. Not much, but I know also wind and rain can have serious impact. Need more data.

    Quote Originally Posted by Daox View Post
    What was the claimed reason for the auto stop&go recall?
    A bug in the algorithm, which made the system to shutdown the engine under circumstances where it couldn't be started instantaneous again. (Engine not warm enough, too cold environment, ...)

        __________________________________________

        click to view fuel log View my fuel log 2013 Space Star Cleartec Intense 1.0 manual: 53.6 mpg (US) ... 22.8 km/L ... 4.4 L/100 km ... 64.4 mpg (Imp)


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    More data. On 30 march I have reset my B gauge, on a fuel station. Today on a fuel station I have read it out. 25.5km/L. In that period my car has driven 2496km, using 98.2L, which is 25.4km/L. So it appears the gauge is still reliable, and I assume that then the A gauge is reliable too.

    So the amazing numbers I see are real.


        __________________________________________

        click to view fuel log View my fuel log 2013 Space Star Cleartec Intense 1.0 manual: 53.6 mpg (US) ... 22.8 km/L ... 4.4 L/100 km ... 64.4 mpg (Imp)


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    Rockabilly Manta (05-14-2019)

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