GoM broken in latest update

[mkhuffman]

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.

I didn't know the second part, but I also saw the range pop up to EPA after one of the OTAs. I forget which one now, there have been so many since. But since then, the 100% SoCD GOM has been decreasing along with the SoH of the HVB. Except in winter, when it was naturally lower because of local temperatures.

I am going to try the test on Friday morning, when I charge to 100% to come home from the office.

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[mkhuffman]

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.

I am curious what the GOM is showing for you at 100% SoCD. In the US, it is defaulting to EPA range. Since the EPA range is not relevant in the UK, does your default to the WLTP range? If so, that is crazy. WLTP is so unrealistic.

 

[Tnuctihs]

I am curious what the GOM is showing for you at 100% SoCD. In the US, it is defaulting to EPA range. Since the EPA range is not relevant in the UK, does your default to the WLTP range? If so, that is crazy. WLTP is so unrealistic.

I have only charged up to 90% since the update, but every morning, no matter how I drove the night before, or the outside temperature it's showing 237 miles.

I've even been driving more aggressively to see it If adjusts, but so far, every morning, 90% @ 237 miles.

A 78 mile drive later, it's sitting around 130. So I lost 29 miles range over those 78.

It's totally useless to me now. If I were a new owner, the range anxiety would drive me mad!

It will start to warm up in the UK over the coming weeks, so I'm interested to see what effect that has, if any.

 

[averyintucson]

A range guestimate when the car is just turned on is a complete fantasy because the GoM has no idea what your trip plans are. Mileage varies so much due to many factors, such as speed, temperature, elevation change, etc. I only look at the GoM after I have set a navigation route to my next charge station, and then just to figure a range margin = GoM range - destination distance. I only use this to adjust my driving style. If I have a big margin, I will indulge my lead foot and drive fast, squandering charge with lower mileage. If the margin is low, I will hypermile and slow down to improve mileage. Of course, if the GoM range is less than the trip distance, I will find a closer charge station. I also make my initial trip plans using ABRP, and I check to make sure the GoM is consistent with the ABRP itinerary. This approach worked very well for me on my recent road trip to see the eclipse.

 

[Tnuctihs]

A range guestimate when the car is just turned on is a complete fantasy because the GoM has no idea what your trip plans are. Mileage varies so much due to many factors, such as speed, temperature, elevation change, etc. I only look at the GoM after I have set a navigation route to my next charge station, and then just to figure a range margin = GoM range - destination distance. I only use this to adjust my driving style. If I have a big margin, I will indulge my lead foot and drive fast, squandering charge with lower mileage. If the margin is low, I will hypermile and slow down to improve mileage. Of course, if the GoM range is less than the trip distance, I will find a closer charge station. I also make my initial trip plans using ABRP, and I check to make sure the GoM is consistent with the ABRP itinerary. This approach worked very well for me on my recent road trip to see the eclipse.

I completely agree.

I've had the car for two years, and I researched it for a long time before I bought it. Cold weather, hot weather, hills and even strong winds, all have an effect range. I'm happy with this.

However, up until the latest update, taking all of those factors into account, I personally found that the GoM predicted my range pretty accurately from the moment I started it. Impressively so in fact.

I know what range the car should display for the current weather conditions, and for the journeys I'm making, but now, it's just way off.

I can work it out. I simply multiply the new "optimum range" by ~90%, or, I multiply the distance I plan to drive by ~ 1.30.

Either way, right now my basic arithmetic gives me a more accurate calculation than the GoM does.

To be clear, I absolutely love my car. I'd say it's the best car I've had, and I have managed to escape all the other issues that I read about on this forum.

I think that's why I'm so disappointed.

I'm going to give it time though, and if it improves, then I will take it all back! ?

 

[averyintucson]

I can work it out. I simply multiply the new "optimum range" by ~90%, or, I multiply the distance I plan to drive by ~ 1.30.

Either way, right now my basic arithmetic gives me a more accurate calculation than the GoM does.

I made a spreadsheet to "do the math" and incorporate many factors, but the main thing I use is how the mileage drops with speed.

 

[Mach1E]

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.

6%?

That’s well within the margin of error for the GOM. It was never that accurate.

Maybe it used to be 6% low? Or maybe the wind changed directions or the temperature changed?

But really because you got an update, we know it’s that the driving history reset.

 

[mkhuffman]

6%?

That’s well within the margin of error for the GOM. It was never that accurate.

Maybe it used to be 6% low? Or maybe the wind changed directions or the temperature changed?

But really because you got an update, we know it’s that the driving history reset.

I have to agree with John. Prior to the update that seems to have removed driving history as a factor, my GOM was very realistic. I agree the car doesn't know where I am going (unless I use the nav), but the driving history method worked really well for me.

I use the nav on trips out of town and Intelligent Range closes that gap. For me, anyway. For local driving I don't care what the GOM says.

 

[Mach1E]

I have to agree with John. Prior to the update that seems to have removed driving history as a factor, my GOM was very realistic. I agree the car doesn't know where I am going (unless I use the nav), but the driving history method worked really well for me.

I use the nav on trips out of town and Intelligent Range closes that gap. For me, anyway. For local driving I don't care what the GOM says.

I believe what you say about accuracy changing.

I just don’t think that a 6% difference is enough to draw any conclusions.

My car hasn’t had an update since last August. I’m in Florida (warm all the time) and my range at full charge varies from 230 to 290 miles. I drive the same area all the time too.

That’s a 26% variance without an update to blame.

I just think 6% is so small to point any fingers.

I would say that if your GOM keeps changing, driving history should be making an impact.

 

[mkhuffman]

I believe what you say about accuracy changing.

I just don’t think that a 6% difference is enough to draw any conclusions.

My car hasn’t had an update since last August. I’m in Florida (warm all the time) and my range at full charge varies from 230 to 290 miles. I drive the same area all the time too.

That’s a 26% variance without an update to blame.

I just think 6% is so small to point any fingers.

I would say that if your GOM keeps changing, driving history should be making an impact.

Yep. The GOM is not changing. It is defaulting to EPA range.

Except when it is cold. Then the range is less.

 

[Mach1E]

Yep. The GOM is not changing. It is defaulting to EPA range.

Except when it is cold. Then the range is less.

It broke then.

Add it it to the list!

 

[mkhuffman]

It broke then.

Add it it to the list!

That's the design...

 

[mkhuffman]

It broke then.

Add it it to the list!

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.

Yesterday I charged to 100%. I had 248 miles of range on the GOM. I reset driving history. It added 10 miles of range, so the GOM said 258. (The battery temp was 73.4 F.)

It appears driving history has an impact, but just not a significant impact. 258/270 is 96% of EPA, which isn't possible (driving under EPA test conditions) with the SoH of my battery. So, the weighting toward displaying original EPA rating is pretty heavy, it appears.

That is disappointing. If they are going to display EPA range at 100%, it should be what I could achieve with the capacity of my battery, not some BS number I can never achieve unless I drive easier than the EPA test. That isn't happening in my world.

Lots of my miles are 79-80 mph highway miles. My driving history has a negative effect on the GOM. I imagine people who don't drive at higher speeds very often (mostly lower speed city driving) will see a positive impact, but it won't be much. Maybe it will add 10 miles like mine took 10 away? On the other hand, maybe Ford has biased the GOM to show higher ranges, so easy driving history will have a bigger impact than hard driving history.

The GOM is basically worthless unless you use the Ford Nav. Intelligent Range does a good job of updating the actual GOM based on your route, from my experience anyway.

 

[Tnuctihs]

Yesterday I charged to 100%. I had 248 miles of range on the GOM. I reset driving history. It added 10 miles of range, so the GOM said 258. (The battery temp was 73.4 F.)

It appears driving history has an impact, but just not a significant impact. 258/270 is 96% of EPA, which isn't possible (driving under EPA test conditions) with the SoH of my battery. So, the weighting toward displaying original EPA rating is pretty heavy, it appears.

That is disappointing. If they are going to display EPA range at 100%, it should be what I could achieve with the capacity of my battery, not some BS number I can never achieve unless I drive easier than the EPA test. That isn't happening in my world.

Lots of my miles are 79-80 mph highway miles. My driving history has a negative effect on the GOM. I imagine people who don't drive at higher speeds very often (mostly lower speed city driving) will see a positive impact, but it won't be much. Maybe it will add 10 miles like mine took 10 away? On the other hand, maybe Ford has biased the GOM to show higher ranges, so easy driving history will have a bigger impact than hard driving history.

The GOM is basically worthless unless you use the Ford Nav. Intelligent Range does a good job of updating the actual GOM based on your route, from my experience anyway.

I'm still testing, but every morning, over the last 7 days, a 90% charge says I have 235 mile range. The temperature has been about 8° C (46° F). Prior to the update, it would have shown my range at approximately 190.

I just completed a 13 mile journey, and those 13 miles took 20 miles off my "optimum" range.

Last week, a three 78 mile journeys each took 104 miles from my range.

I'm finding that it consistently over estimates my range by ~30% now.

To be clear, I'm happy with the actual range im getting, just not the BS range it says I now have, because there is no way I can achieve it.

 

[Mach1E]

I think no matter how they change the GOM, it won’t make everyone happy.

I think it’s safe to say there is no “one right way” to display range at 100%.

The car is always guessing. Based on temp, driving history, battery temp, destination etc.

It knows exactly how you drove yesterday.

It has no clue how you will drive today (unless you tell it via NAV).

And no matter what the GOM says, it has zero impact on what range and efficiency you will get today.

The only reason people obsess over the GOM is if they have some sort of range anxiety or OCD (not a dig, this is a real struggle for some). But I would bet the anxiety is more common.

If you didn’t obsess over the estimated range in your gas cars (which was never very accurate because it only used average economy from driving history)…….then your range anxiety is to blame.

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