My Experience is that even though it shows 360, it drops like crazy as you drive it. If feels the guessometer gets better as you reach around 50% of the battery.

 

My experience is different to yours.
Recent round trip:
100% GOM 332 miles.
Drove 149 miles.
at destination 53% GOM 183 miles.
Drove 142 miles.
GOM at final destination 11% 40 miles.
So, driven miles 149+142=291 miles plus remaining GOM of 40 miles = 331 miles

 

I live in insanely hot Phoenix and my range matches up pretty well with the estimate. I also drive it like a Prius.

 

These days I get about 320 miles on the highway in my M60 with 22" wheels. I'm in MA so it's not crazy hot here. That drops to 270 or so when it is 32 degrees out. I did a trip when it was in the teens and I think the highway range was 220 to 230.

 

I maintain my battery between 30~70% at all time. Normally I don't care what the fictional range prediction in the dashboard because BMW regularly tells me my 100% equivilant range is over 500m, like 50%@255 or 60@310. I don't believe these number can be achieved no matter how conservatively I drive in efficient mode. However, the trip data shows 3.6m/kwh or higher on average. As long as the number is above 3.5, I am confident I can get 360m on a full charge. That's the parameter I go by everyday.

 

Have had the car for about 2 weeks of driving the GOM seems way off to me. When it is charged up it is saying I have 330-350 miles. But my average is 2.9… I’m relying on a basic math to figure it out. Using 100kw as the capacity (even though it is 108 according to the telemetrics data). So if I am averaging 2.9, I will be hitting 290…

 

The attached spreadsheet uses the info from the app which is very optimistic. Yes, it has been hot in Phoenix this summer!

 

How did you get it to export?

 

Just keeping it manually using the history in the app'

 

Miles Remaining is not in my report, but good to know we can export it.

 

My M60 was inadvertantly charged to 100% at the start of this week (and it estimated a range of around 350 miles), so I thought I'd see what range I could achieve from the full battery.

Operating parameters:
Weather conditions this week have been ~15'C in the morning commute, and around 25'C for the afternoon commute and shuffling the children to their various clubs and activities.
I have driven exclusively in Sport mode (lowered suspension should reduce air resistance on the motorway, right? 😂)
I haven't used AC, just a bit of airflow when needed, and a bit of seat ventilation.
210 of the total miles were motorway miles, speeds between 50mph and "70"mph.
I floor the accelerator where I can.
I flick between B and D (adaptive) all the time to maximize coasting opportunities, with some adaptive cruise, but all braking is done by regen.

With 6% remaining (24 miles estimated range), I have covered 295 miles, an average of 3.0 miles/kWh.
This included a whopping 37.2kWh of regen, meaning effectively 33% of the energy spent from the battery was recouped and reused, which, given how much time was spent at motorway speeds, is incredible.

Given similar weather conditions, I now feel pretty comfortable getting 350 miles out of the battery if I really had to.

 

Photo evidence 🙂

 

Just this morning my "old" 2022 iX showed 275 miles remaining with a 61% charge. Mathematically that equates to a theoretical range of 450 miles. I guess I don't believe that number...

 

I'm not sure why the GOM is so off for the IX. With my previous I4 after the update in March the computer was pretty darn close. our most recent 100% charge this morning said we had 450 miles... fast forward after doing 260 miles today it says I have 19 percent or 65 miles left.... now that seems a little more realistic and tracking closer to 320 miles.

 

I'm not sure why the GOM is so off for the IX. With my previous I4 after the update in March the computer was pretty darn close. our most recent 100% charge this morning said we had 450 miles... fast forward after doing 260 miles today it says I have 19 percent or 65 miles left.... now that seems a little more realistic and tracking closer to 320 miles.

The GOM is not off. The algorithm just tends to favor your recent driving style. So if you did lots of downhill traveling right before you got home, it would throw off the average calculation.
When I visit my parents I get 2.8 miles/kwh (extrapolated to 291 miles at 100% range), and when drive back home I average 4.5 miles/kwh (extrapolated to 441 miles at 100% range). So the GOM range looks amazing when I get home, (which is slightly downhill), but in reality the average is around 340-350 miles which is right in line with expectations.

 

The GOM is not off. The algorithm just tends to favorite your recent driving style. So if you did lots of downhill traveling right before you got home, it would throw off the average calculation.
When I visit my parents I get 2.8 miles/kwh (extrapolated to 291 miles at 100% range), and when drive back home I average 4.5 miles/kwh (extrapolated to 441 miles at 100% range). So the GOM range looks amazing when I get home, (which is slightly downhill), but in reality the average is around 340-350 miles which is right in line with expectations.

Fair point, but I think before the I4 update I had to constantly do math to figure out how many miles left over. After the update it was less of that. Seems with the IX we have to do the math continuously since getting 450 miles is a little unrealistic. Fortunately with the IX we are right about 100kwh (105-108 technically) so easier to do math, factor in 3 mile average per KWH, just multiply by 3 the percentage left over to get miles left.

I will say this 260 miles I did was based on mostly 75+ and sometimes +++ 😃 and I still averaged 3.1! So the BMW published at 307 for the 2024 seems to be based on worst case driving conditions. Will be curious what it will be like this winter.

 

I've learned after driving my Tesla for 9 years that eventually you'll get the hang of the quirks and be able to have a "feel" for how far you can go. I know that's not particularly reassuring but that's what happened to me. If I want my range-o-meter to drop 1 mile for every real mile driven to give me an accurate assessment of what I have left, I simply change my driving parameters so that I hit 3+ mi/kWh. If I'm tight it might mean driving at or below the speed limit, maybe sacrificing some HVAC comfort if I'm in a real jam. That happened to me once on a long drive to the SF bay area in my Tesla. I was about 4 miles from my destination with just as many miles of range left. In order to make it I had to turn off my heat and coast a lot! lol