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Discussion Starter #1
I decided to run my SOC down almost all the way to check the range stated after the dealer software update. Usually I plug in at home when I get to a 100 mile GOM stated range. That is needlessly cautious, considering 100 miles is at least a week of my normal driving need. (Since I'm retired and have no commute to work.)

So I reset Trip A to zero as I always do, for the odometer to track the actual miles driven, and I'm down to 39 miles left says the GOM. I can take it down a little more, but I'll charge at 10 miles.

Here's a difference from the SOC to the odometer I'm seeing.

I'm down to 16% SOC. Working it backwards, dividing the remaining range from the GOM by 0.16, implies 243 miles at 100% SOC, about the 245 range I started with. So it matches close enough. But adding the GOM range now to Trip A is around 200.

I did do some dynamic mode driving early in the charge, including repeated hard acceleration. Maybe that ate up the difference, and the GOM/SOC is accurate as to my normal driving, averaging now back to that kind of battery draw?

I also noted my regen figure for this driving period which I normally ignore, which has been 22 kWh to this point.
 

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I did something similar. I charged on a Sunday night drove all week to and from work & around in LA area. Drove down to about 37 miles on the GOM/SOC. Then went to the App (In Control) added up all the mileage from my trips that week. When added back the 37 miles from the GOM the total was about 240. This is after the H.264 upgrade with aggressive & stop & go LA driving in mostly Dynamic mode. Temperature was in the 50s-60s last week mostly.

Your mileage may vary.
 

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I did a similar experiment, running my post-H264 2020 HSE down to 1% in all city driving on ECO mode. At 100 mi driven, all calculations pointed to about 255 mi range. At 205 miles driven, I had 14% and 35 miles left (between 240-250 mi range, depending on which calculation made). However, I left for a 22 mile round trip at that point (a little anxious), and returned with 2 miles and 1% left (even more anxious). So the GoM dropped from 35 to 2 on a 22 mile trip at the very end. Result was 229 mi range (227 driven + 2 left on GoM). Upon recharging to 100%, GoM read 257 mi, down from 261 on its first post-H264 full charge.

I intend to attempt the same experiment this week on 'Comfort Mode'.
 

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I've also been keeping an eye on "Sudden Pessimism Syndrome" (SPS) where GOM seems less favorable as I work my way through a charge. . . causing me to wonder about potential front-end "Optimism" newly built into the programming. Also, between Eco, Comfort and Dynamic modes, GOM shows 2 miles in variation. Finally, 240 seems to be the steady winter GOM range at 100%. Will keep tracking against odometer.
 

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and most usefully, as It is the only time range really matters, has it been 240 miles down the interstate at ‘normal’ highway speeds ~75mph?
A lot of people have driven more than 240 miles. I have personally driven more than 250 miles. The best I have seen documented is 295 miles. You won't see such numbers driving on a highway of course.
At constant speed of 60 miles/h you should get around of 240 miles in good conditions with an I-Pace with 18 wheels. I have seen this documented with a HSE with 20 wheels. It was done as a round trip starting and ending at the same point in calm winds and nice temperature in low power mode (no AC).

But you don't really drive like that so normal range is a lot less of course.
 

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Today's freeway drive suggests I'm not getting 240 miles at a steady 65+ mph with temps <60F. More likely 200 - 220. Recent experience suggests well over 240 for mixed driving with temps >60F. My personal range target is a round trip on Hwy 1 (PCH) to San Simeon and back, ~ 260 miles. I'm thinking it might be doable with warmer temps. In any case, current state of play is pretty good for me (take other SUV for rare longer trips).
 

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I've always wondered about the feasibility of an exteme eco mode which limited horsepower and torque to something like half or perhaps switched off one motor entirely. I wonder what effect that would have on range.
 

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I've always wondered about the feasibility of an exteme eco mode which limited horsepower and torque to something like half or perhaps switched off one motor entirely. I wonder what effect that would have on range.
I think the Low Power mode does some of these things including limiting climate control. This mode is selectable.
 

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I know most of happens in eco mode, but ultimately, I think full power is still on tap, but with a much more gentle throttle response. I'm talking about cutting the max power to 200 hp and the torque to 250. That should dramatically cut power usage and extend the range considerably. Maybe the extent of power cut could even be adjustable to the user.
 

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Discussion Starter #13
To follow up on the end of my charge:

I had some paperwork due across town and a promise someone else would take it for me. That didn't happen, so I took off on a 14 mile round trip with 20 miles of GOM range. Six miles to spare!

As soon as it went below 20 miles range left, I got the warning of low charge I had set for that point. No worries, as expected, running AC and the satellite radio. The range did drop a bit faster than the miles traveled on the first leg (~1 mile more), but I wasn't concerned.

On the way back, the car got worried, turned off the radio and the AC and announced low power mode. I guess that was around 5 miles left.

Something I noticed was the power half of the dial had a boundary line that moved counterclockwise upward toward 12 o'clock. It moved up to about 1 o'clock on the dial. And it noticeably kept moving when I used power, but also noticeably retreated when regen braking was applied. That may be a fine-tuning power left display at the end of the charge.

I got home with 4 miles of range on 2% SOC, implying the 200 mile range I had seen the odometer indicating. And the odometer was one or two miles short of 200, adding in the 4 miles left.

Charged it overnight and 100% SOC showed 250 miles of range. Driving it three miles and it showed 99% SOC and 243 on range.

I noticed the early charge was coming in at 15 miles of range per hour. I haven't seen that at home before. It could have been from how low the remaining charge was, or something about the update.

Now this is my first full charge since the update, so I will repeat my experiment.
 

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The boundary was the reduced available power as the battery SOC goes lower, showing you that you can’t get all the power you would get when the battery is not that low. Also I have noticed that in low SOC charge rates are unrealistic, I am assuming its a calculation bug. It will show adding 11-13% of capacity per hour, which would imply 9+ KW of charge on an L2!
 

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In my experiment running down to 1% SOC, "Low Power" mode turned on at 5mi on GoM, complete with dark center screens and dead radio/climate control. I also experienced limited propulsion power, with the Power side of the "ergometer" being "limited" at about the 2:00 position. Even flooring it, the car only crept up in speed slowly - did reach 45mph but very slowly, almost "too" slowly for normal traffic, but the car is reminding you of your impending energy outage...
Also documented elsewhere, I drove 227mi with 2mi on GoM at 1& SOC left. All this post-H264 in Eco Mode, moderate temps (50-60), but the last half in some heavy rains with extreme use of wipers. I also have 22in wheels. GoM started at 261 on 100% SOC and tracked at 245-250 for most of the trip. Last 22 actual miles consumed 33 mi on the GoM, and others have experienced 'sharp' drops during the last few miles, so do not attempt far from home or other charging station. I thought I had 13 miles to spare and ended up with 2.

I'm in the middle of same routine, although this time testing in Comfort mode with more liberal use of seat heaters and A/C.... almost halfway through and range calculation tracking at about 243mi, only 5-7mi less (at this point) than when using Eco mode.
 

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2019 I-Pace HSE - Borasco Grey
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After seeing this thread I decided to test what happened at lower charges too since I hadn't ever ventured much below 20% charge before. I've been letting the battery run down over the last week and a half with mostly shorter distance driving... normally my 2 mile "commute" to the office and back and some lunch/dinner outings not too far away.

Today I went a bit further from home thinking I still had more range to play with than I did. With the GoM reporting 21 miles remaining, 9% charge, and the outside temp at around 40F; I switched the car to low power mode just to see how the car performed for the 10 mile drive back home. The heat, radio, and even the HUD shut off once I selected Low Power mode.

During the drive I was surprised to find that the GoM was descending at a much faster rate than expected. The car went into a deeper lower power mode when there was around 7 miles remaining on the GoM. I arrived home with 2% charge and 5 miles remaining. In summary, the car burned through 16 GoM miles over the 10 mile drive in the two low power modes. As dtgsrq noted, in those last couple of miles the car would only barely accelerate even if I floored it.

Since my commutes are really short, the car seems to use a lot of power just warming up the batteries for the short drives (I avoided using preconditioning plugged in at home for the test). Since the last charge I had driven two ~30 miles stretches, two ~10 miles stretches, and 31 short trips in the 1-7 mile range (averaging 2.6 miles). The car only achieved 165 miles with all of those short drives with 5 miles remaining on the GoM estimate. That said, I got 35 trips out of a single charge so I guess that isn't all that terrible, it's just not something you see them mention much when discussing range.
 

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Since my commutes are really short, the car seems to use a lot of power just warming up the batteries for the short drives (I avoided using preconditioning plugged in at home for the test). Since the last charge I had driven two ~30 miles stretches, two ~10 miles stretches, and 31 short trips in the 1-7 mile range (averaging 2.6 miles). The car only achieved 165 miles with all of those short drives with 5 miles remaining on the GoM estimate.
I've seen the same effect of multiple short trips vs longer runs. I feel that some of the inconsistency at low GoM levels are a result of other factors such conditioning the battery, elevation changes over short stretches of a journey, and/or heating the cabin on top of the miles driven.
Ideally we need to track SoC or GoM vs miles driven at a constant speed on a flat run. Even then I would guess that at lower ambient temps the battery conditioning kicks on and off during a journey rather than being on constantly. Thus, the energy usage would appear to be stepwise over a long run and inconsistent over short runs.
 

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Has anyone actually driven more than 240 miles on one charge? Pre or Post H264?
Yes - but only in the summer. on the warmest day i once got it to record 276 miles on full charge - but I drive 90 miles round trip a day so never get a chance to drain it, but I was getting about 240 - 250. Now in the east coast winter 206 on a full charge, but the temp has risen this week so its going back up again - 222 today.
 

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Discussion Starter #19
I guess when the power saving mode kicked in, it shut off the HUD (I didn't notice, but that's logical).

It stayed off after the full recharge, requiring turning it back on. No problem there, of course, and it was immediately apparent I was missing it. Now I wonder if the interior lighting stayed off. (I mainly drive in the daytime so I wouldn't have noticed.) Both those are lit by LEDs which must draw very little power, but I understand why the system would turn them off anyway in very low SOC conditions.
 

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I have a feeling they may turn some things off more for “psychological comfort” of “low power mode” than any tangible result. Because honestly short of climate, wheel heat and headlights nothing draws enough power to translate to fractions of miles. Well maybe 300 watts of full blast death metal....
 
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