GoM broken in latest update

[Tnuctihs]

UK customer, just received update 24-PU0102-CHG-SUFX.

Change log states that the range indicator now shows optimum range, and indeed, my range has increased by around 10%.

The trouble is, this is total garbage, and has made the GoM totally inaccurate.

Anyone else had the same experience?

@Ford Motor Company, what on earth was the point of this update?

Potential mileage is irrelevant, I want mileage based on, I don't know, the actual facts.

Please, change this back.

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[kdonnel]

Some updates reset driving history.

I think it takes about 500 miles for it to readjust.

 

[generaltso]

I think Tesla has proven that the vast majority of people prefer to see large numbers. They don't seem to care if it has any basis in reality.

 

[Tnuctihs]

I think Tesla has proven that the vast majority of people prefer to see large numbers. They don't seem to care if it has any basis in reality.

Sadly, I agree.

I tested many BEV's prior to purchasing the Mach-e, and one of the things that impressed me, was how accurate the GoM was (for me) compared to all the others.

Indeed, I have recommended the Mach-e to many people, and the accurate range reporting was always something I mentioned.

If it stays as it is, I will not recommend it again.

The stupid thing is, that it will not take folks long to realise they are being mislead.

But, of course, Ford have their money by then!

 

[Tnuctihs]

Some updates reset driving history.

I think it takes about 500 miles for it to readjust.

I thought the same, and I have experienced this in the past.

However, every charge, no matter the temperature or my driving patterns, I'm still getting the same over estimated range.

I shall give it a little longer though, and report back my findings!

 

[Mach-Lee]

It will go back on its own over the next 500 miles. A reset is expected after powertrain updates.

Also don’t charge to 100% if you are.

 

[mkhuffman]

I thought the same, and I have experienced this in the past.

However, every charge, no matter the temperature or my driving patterns, I'm still getting the same over estimated range.

I shall give it a little longer though, and report back my findings!

Have you received "Intelligent Range" in the UK yet, and specifically for your MME? If so, that is Ford's solution to the more optimistic GOM.

Since the car does not know where you are going, it assumes the most optimistic range. Once you enter a destination in the navigation system, it has a much better idea what your range will be and changes the GOM accordingly.

Personally, I think it is a great solution because it eliminates a lot of the complaining and moaning about the low GOM and the wrong battery installed (yes, people think that), and still provides realistic GOM estimates when it matters most - when on a trip.

It will go back on its own over the next 500 miles. A reset is expected after powertrain updates.

Also don’t charge to 100% if you are.

My GOM is definitely not using driving history any longer, with any real significance. It does use battery temperature and local climate (like in winter), but my GOM at 100% is exactly the SoH x original EPA range. Exactly.

245 miles of range this morning at 100%
245/270 = 90.7%. The SoH of my battery is 90.5%.

Of course, when I enter a destination, Intelligent Range changes the GOM based on the trip.

 

[kdonnel]

My GOM is definitely not using driving history any longer, with any real significance. It does use battery temperature and local climate (like in winter), but my GOM at 100% is exactly the SoH x original EPA range. Exactly.

245 miles of range this morning at 100%
245/270 = 90.7%. The SoH of my battery is 90.5%.

Of course, when I enter a destination, Intelligent Range changes the GOM based on the trip.

I wonder if your driving history just happens to match the mi/kWh necessary for the calculation to work out to match SoH?

My car appears to still be using driving history.

I just happened to charge to 100% prior to a trip today and got a GOM of 322. My SoH was 95% the last time I checked. Using your calculation with the EPA range, 322 / 312 that would mean my SoH was really 103%. If the GOM was just using SoH I would have expected a max GOM of 296.

 

[bbulkow]

The stupid thing is, that it will not take folks long to realise they are being mislead.

But, of course, Ford have their money by then!

I wish I had your faith in "folks".

At best, by the time they realize, they have a long laundry list of likes and dislikes, and this is in there somewhere on one side or the other. ("has the range I paid for!" "has a quite accurate GOM!") At worst, which I'd guess is the majority, they never notice.

I love the accuracy but we are the early adopter market. Ford is retooling for the mass market - and that is not us. Sadly.

 

[SpeedRacer72]

UK customer, just received update 24-PU0102-CHG-SUFX.

Change log states that the range indicator now shows optimum range, and indeed, my range has increased by around 10%.

The trouble is, this is total garbage, and has made the GoM totally inaccurate.

Anyone else had the same experience?

@Ford Motor Company, what on earth was the point of this update?

Potential mileage is irrelevant, I want mileage based on, I don't know, the actual facts.

Please, change this back.

I am positive the reason @Ford Motor Company did this was because people were complaining about their GoM mileage not matching what it said on the window sticker. Resulting in, I am sure, many angry calls and visits to the dealerships about something wrong with their car because the sticker said I would get 230 miles of range and the GoM is showing 140 miles of range in the winter.

At the minimum, there should be the option to select between the two modes, because just like you, my GoM was very accurate, when I got in the car and it said 95 miles of range, I knew I could go 95 miles +- a mile or 2
Now when I charge to 100% it always says 230 miles, and the max I get on a full charge is 190 miles, so the GoM is virtually worthless.
Now I have to do the math in my head to determine how far I can go




One could argue that the updated GoM is just like an ICE fuel gauge in that with a full tank you can get 330 miles, but if you drive hard & fast, you will get less than 330 miles out of a tank of gas.
But my counterpoint to that is the technology is there to make it accurate, why intentionally make it inaccurate just so new EV owners don't have a cow when their GoM says 140 miles in the winter.
To me that is why having the option to select the GoM algorithm would be so beneficial.
The ICE fuel gauge method for new owners and the accurate GoM method for seasoned owners.

 

[AliRafiee]

UK customer, just received update 24-PU0102-CHG-SUFX.

Change log states that the range indicator now shows optimum range, and indeed, my range has increased by around 10%.

The trouble is, this is total garbage, and has made the GoM totally inaccurate.

Anyone else had the same experience?

@Ford Motor Company, what on earth was the point of this update?

Potential mileage is irrelevant, I want mileage based on, I don't know, the actual facts.

Please, change this back.

How do you know? Did you run it down to zero and counted the miles, the grade of the road, wind resistance, and throttle application?

 

[mkhuffman]

I wonder if your driving history just happens to match the mi/kWh necessary for the calculation to work out to match SoH?

My car appears to still be using driving history.

I just happened to charge to 100% prior to a trip today and got a GOM of 322. My SoH was 95% the last time I checked. Using your calculation with the EPA range, 322 / 312 that would mean my SoH was really 103%. If the GOM was just using SoH I would have expected a max GOM of 296.

Actually, I considered the same thing after I posted the comment. I have never known Lee to be wrong, so it was hard for me to disagree with him.

I am going to do a test this week to determine if the math is just a coincidence. I am going to charge to 100%, check the GOM, and then clear the driving history. If driving history matters, the GOM should change after I clear driving history. Will it go up?

Holding my breath!

 

[azerik]

Holding my breath!

I'm rooting for you to get those free possibly imaginary miles

 

[Tnuctihs]

How do you know? Did you run it down to zero and counted the miles, the grade of the road, wind resistance, and throttle application?

I have had the car for 2 years and 38,000 miles.

I do the same 78 mile round trip every day, in all kinds of temperatures.

I know that for two weeks since the update, the car is now telling me I have more range than I ever used to, but in reality, that figure is ~6% too high.

However, I'm going to give it a little longer, and I will try what has been suggested with the navigation system.

Thanks for all the ideas, time will tell.

 

[Mach-Lee]

Actually, I considered the same thing after I posted the comment. I have never known Lee to be wrong, so it was hard for me to disagree with him.

I am going to do a test this week to determine if the math is just a coincidence. I am going to charge to 100%, check the GOM, and then clear the driving history. If driving history matters, the GOM should change after I clear driving history. Will it go up?

Holding my breath!

My impression (I could be wrong) is they changed it to show EPA at 100%, but at some point below 100% it reads your actual estimated range with driving history. Kinda sneaky but that was probably a compromise between the marketing and engineering teams.

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