[Eucerin]

I am seeing about 40 miles less range after 2 years of ownership. And I am not talking about seasonal variation due to weather. Over the course of these 2 years, I a/c charged to 80% almost every day, with only about 10 instances of d/c charging, and about a handful of times where I charged to 100%.

Do you guys see the same thing after a few years of ownership?

[ricerboi]

Is this actual driving range or the fake 100% range? iX40? 50? 60? Are you running non-EV tires?

I’m seeing about 5-8% drop from actual max capacity after 2.75 years and 80k miles. And I drive hard. Lotta stuff factors into range so gotta factor those in to isolate the issue.

[javapro]

So, this is getting interesting. As per my post (https://bmwi.bimmerpost.com/forums/s....php?t=2179857), I also noticed a sudden drop of around 40 miles of an estimated range about a week ago. Another person reported the same 40 mile drop (https://bmwi.bimmerpost.com/forums/s...8&postcount=54) today. I wonder whether it’s a coincidence or a pattern. May be BMW changed the way the estimated range is calculated in 11/2024 iDrive version and we start hitting some kind of condition triggering the new calculations? Or may be even worse they use some kind of parameters stored on their servers which are used to calculate estimated range and they updated or messed them up recently.

[javapro]

Originally Posted by Eucerin

I am seeing about 40 miles less range after 2 years of ownership. And I am not talking about seasonal variation due to weather. Over the course of these 2 years, I a/c charged to 80% almost every day, with only about 10 instances of d/c charging, and about a handful of times where I charged to 100%.

Do you guys see the same thing after a few years of ownership?

When did you notice this drop in range?

[Eucerin]

Originally Posted by ricerboi

Is this actual driving range or the fake 100% range? iX40? 50? 60? Are you running non-EV tires?

I’m seeing about 5-8% drop from actual max capacity after 2.75 years and 80k miles. And I drive hard. Lotta stuff factors into range so gotta factor those in to isolate the issue.

I see it is ~40mi constant reduction across the range. If I'm at 80%, miles it reports are 40mi lower than before. Same for other percentages.

This is my daily family drive, so I try to drive smoothly otherwise kid feels sick. Car has the EV BMW Star tires, with correct air pressure set.

Originally Posted by javapro

So, this is getting interesting. As per my post (https://bmwi.bimmerpost.com/forums/s....php?t=2179857), I also noticed a sudden drop of around 40 miles of an estimated range about a week ago. Another person reported the same 40 mile drop (https://bmwi.bimmerpost.com/forums/s...8&postcount=54) today. I wonder whether it’s a coincidence or a pattern. May be BMW changed the way the estimated range is calculated in 11/2024 iDrive version and we start hitting some kind of condition triggering the new calculations. Or may be even worse they use some kind of parameters stored on their servers which are used to calculate estimated range and they updated or messed them up recently.

When did you notice this drop in range?

This is super interesting, thank you for the links. I requested CarData. I am curious about what the report is going to say about the battery capacity.

Mmm.. I think I've noticed this for the past month or so. Can't be 100% sure, but it could very well be following the latest 11/2024 update.

[javapro]

Originally Posted by Eucerin

I see it is ~40mi constant reduction across the range. If I'm at 80%, miles it reports are 40mi lower than before. Same for other percentages.

This is my daily family drive, so I try to drive smoothly otherwise kid feels sick. Car has the EV BMW Star tires, with correct air pressure set.



This is super interesting, thank you for the links. I requested CarData. I am curious about what the report is going to say about the battery capacity.

Mmm.. I think I've noticed this for the past month or so. Can't be 100% sure, but it could very well be following the latest 11/2024 update.

Was that a gradual drop over several days or a sudden one similar to the one I described in my post (https://bmwi.bimmerpost.com/forums/s...hp?t=2179857)?

[NomoTesla]

Phildas1
Eucerin
javapro

Seems all three of the above members recently experienced a 40-mile range loss. I'm not a big believer in coincidences, I'd wager a guess that something is going on. Sometimes software updates will reset that range algorithm and it takes a few drive cycles to restore. I'm not sure if that's what happened here?

[javapro]

Originally Posted by NomoTesla

Phildas1
Eucerin
javapro

Seems all three of the above members recently experienced a 40-mile range loss. I'm not a big believer in coincidences, I'd wager a guess that something is going on. Sometimes software updates will reset that range algorithm and it takes a few drive cycles to restore. I'm not sure if that's what happened here?

I installed 11/2024 a little over a month ago and didn’t notice any loss of the estimate range. In fact, it kept increasing as the weather got warmer as I would expect. May be BMW changed the range calculation algorithm in 11/2024 and previous driving stats got cleared after a month or something? So far, after slightly over a week of driving since I experienced the sudden drop, my estimated range hasn’t come back to the previous expected levels.

[NomoTesla]

Originally Posted by javapro

I installed 11/2024 a little over a month ago and didn’t notice any loss of the estimate range. In fact, it kept increases as the weather got warmer as I would expect. May be something BMW changed the range calculation algorithm in 11/2024 and it cleared previous driving stats after a month or something. So far after slightly over a week of driving I experienced the sudden drop, my estimated range hasn’t come back to the previous expected levels.

Are you on OS 8 or 8.5? This is why I hate software updates. The mothership can decide, at any moment, to take something away. Apparently, as a society, we have agreed that this kind of behavior is acceptable by multi-billion dollar corporations. We are supposed to support their interests over ours.

I hope this is just a strange anomaly, but if you haven't recovered the range in a week of driving then I'd say something is definitely going on. What is your average driving efficiency, and what does that 40 miles translate into in terms of capacity?

[javapro]

Originally Posted by NomoTesla

Are you on OS 8 or 8.5? This is why I hate software updates. The mothership can decide, at any moment, to take something away. Apparently, as a society, we have agreed that this kind of behavior is acceptable by multi-billion dollar corporations. We are supposed to support their interests over ours.

I hope this is just a strange anomaly, but if you haven't recovered the range in a week of driving then I'd say something is definitely going on. What is your average driving efficiency, and what does that 40 miles translate into in terms of capacity?

I am on 8.5. My average efficiency for April was 2.8 mi/kWh (same as in April a year ago). Given the 103 kWh usable battery capacity as per the recent CarData report, my new estimated range seems to be spot on. I am still puzzled how the estimated range was 40 miles higher up until a sudden drop a week ago given the same efficiency monthly patterns and pretty much the same usable battery capacity. Either the range calculation algorithm was changed in 11/2024 that took a few weeks readjust or I hit some kind of stats threshold causing the estimated range to drop.

[thebishman]

If your driving efficiency remains the same, and if you can document that the battery capacity also has not decreased, then this is just an anomaly of the GOM, (Guess O’ Meter), and I suspect/hope that as others have mentioned, over time the range estimates will recalculate.

[ubercruise]

This is just from memory so I could be wrong, but my range display might have dropped a bit when my battery is fuller (70-80%). Shows like a 280mi range equivalent when I normally believe I'd see 305ish. Now with my battery at 47% it's showing 305mi equivalent. Efficiency hasn't changed, if anything has maybe gotten slightly worse as the snowbirds have left town and there's a bit more open road.

[Eucerin]

OP here, CarData is showing "Energy content of the high-voltage battery: 102 kWh", just a little lower than new, but seems within reasonable degradation after 2 years and shouldn't result in 40mi decrease over the range.

I am not 100% certain, but I don't remember this being a gradual decrease. Instead, I started noticing 80% charge range being significantly lower than before (and usual seasonal changes)

[Windshieldfarmer]

I ordered CarData report yesterday evening. How long before it’s provided? First time ordering said report. I want to see what degradation looks like after 19 months and 14,000 miles.i would expect around 3%.

[javapro]

Originally Posted by Windshieldfarmer

I ordered CarData report yesterday evening. How long before it’s provided? First time ordering said report. I want to see what degradation looks like after 19 months and 14,000 miles.i would expect around 3%.

You should get it within 24 hours as long as your car has cellular reception, i. e. not in the underground garage or something.

[Windshieldfarmer]

Originally Posted by javapro

You should get it within 24 hours as long as your car has cellular reception, i. e. not in the underground garage or something.

Thank you…

[NomoTesla]

Just an aside: The highest kWh reported on my CarData report was after a road trip and multiple charging cycles to 80% or higher.

[javapro]

Originally Posted by Windshieldfarmer

Thank you…

So, what does your CarData report say?