[Jason]

Read the full test article:
https://www.edmunds.com/car-news/new...aderboard.html

[BZ101]

Definitely getting more than expected which is great!

I never understand the math though. e.g., for xDrive 50 (which I have) Edmunds says they measured 32 kWh / 100 miles. Isn't the usable battery 105 kWh? 105 / 32 = 3.28 --> which would imply 328 miles of range. Using 111 kWh full battery would make range 347 miles.

I don't think you can (and don't know if they are) add regeneration because that should be accounted for in the measured 32 kWh/100 mile figure already.

I must be missing something because the car's in dash calculation of range seems to follow the Edmund's math.

[Bimmerfun82]

Great. Now reduce some weight by improving efficiency and regen. And install BMW superchargers. Thanks in advance

[sor]

Originally Posted by BZ101

Definitely getting more than expected which is great!

I never understand the math though. e.g., for xDrive 50 (which I have) Edmunds says they measured 32 kWh / 100 miles. Isn't the usable battery 105 kWh? 105 / 32 = 3.28 —> which would imply 328 miles of range. Using 111 kWh full battery would make range 347 miles.

I don't think you can (and don't know if they are) add regeneration because that should be accounted for in the measured 32 kWh/100 mile figure already.

I must be missing something because the car's in dash calculation of range seems to follow the Edmund's math.

I don’t know if this is the answer but Edmunds states they account for charging losses in their numbers.

So for example (with made up numbers) they drive to empty and go 377 miles. They tow it home and use 120kwh to fill up (105 to the battery and 15 in charging losses). 120kwh/377 miles = .318kwh per mile or 31.8kwh per 100 miles.

[cfm56d7b]

Adding to the discussion.

From January 20, 2023.

TL;DR

"As next step in the long term industrialisation time line, Solid Power plans to deliver full scale automotive cells to BMW Group for testing purposes in 2023.

A first BMW demonstrator vehicle featuring ASSB technology is planned before 2025."

https://www.press.bmwgroup.com/globa...nt-partnership

[JMD]

Good information,....would have loved to see results for the i4 M50 on 19" wheels.

[mckman]

The Edmunds numbers are not useful for estimating range for a long highway trip. They drive 60% city and 40% highway. Plus they stay within 5 mph of the posted speed limits whenever possible.

Isn't highway range currently the EV's achilles heel? These numbers might be useful for comparison purposes but if you never run out of range driving 60/40 city/highway and hardly ever drive as slow as they do in the test then what's the point?

What we really care about is highway range at the average flow of traffic.

[Bimmerfun82]

Originally Posted by mckman

The Edmunds numbers are not useful for estimating range for a long highway trip. They drive 60% city and 40% highway. Plus they stay within 5 mph of the posted speed limits whenever possible.

Isn't highway range currently the EV's achilles heel? These numbers might be useful for comparison purposes but if you never run out of range driving 60/40 city/highway and hardly ever drive as slow as they do in the test then what's the point?

What we really care about is highway range at the average flow of traffic.

Most people use their EVs for a commute, not trips. That said, they should show a 75 mph hwy range test also.

[ggalanis]

Originally Posted by mckman

Isn't highway range currently the EV's achilles heel? These numbers might be useful for comparison purposes but if you never run out of range driving 60/40 city/highway and hardly ever drive as slow as they do in the test then what's the point?

What we really care about is highway range at the average flow of traffic.

For EVs, it would be nice if companies gave a table with highway range as a function of speed and temps; the two main factors that affect it. They could pick a standard value for both (75mph/20C) to use for the official simple value for quick comparison, but this table would be so much better. Instead we have a useless range number, you can find the drag coefficient that can maybe give you a hint at how much worse it will get with speed (but of course they don't give you the frontal area to which the coefficient is applied to, cause that would be too useful) and you are left guessing.

[cambass]

This is not true. Not even getting 227 and u can forget it when there’s a chill in the air. Must question who is behind this!

[moesess34]

Originally Posted by cambass

This is not true. Not even getting 227 and u can forget it when there’s a chill in the air. Must question who is behind this!

100% true in a ix.

[sor]

Originally Posted by mckman

The Edmunds numbers are not useful for estimating range for a long highway trip. They drive 60% city and 40% highway. Plus they stay within 5 mph of the posted speed limits whenever possible.

Isn't highway range currently the EV's achilles heel? These numbers might be useful for comparison purposes but if you never run out of range driving 60/40 city/highway and hardly ever drive as slow as they do in the test then what's the point?

What we really care about is highway range at the average flow of traffic.

Their numbers reflect about what many of us on the forums are getting. I easily break 300 miles on a road trip with good weather. Get closer to EPA’s 280 miles if the wind isn’t going my way or it’s cold. In very poor conditions, 40mph headwind and below freezing I get maybe 240-250 miles. All of these about 75-80 mph.

[Eric500]

Originally Posted by Bimmerfun82

Most people use their EVs for a commute, not trips. That said, they should show a 75 mph hwy range test also.

I would counter that with, most people with a regular commute won't use a full range worth in a day to begin with and can charge at home, so it doesnt really matter if its 250 or 350.

IMO, the full range test would be more useful going 70+ on a highway. In Texas going between Dallas, Austin, Houston, I routinely set cruise control between 85-90 if traffic allows. If i can make a 220 mile trip from Austin to Dallas without stopping, I would love to know if possible when I plan to get an EV.

[sor]

Originally Posted by EricJTsang

I would counter that with, most people with a regular commute won't use a full range worth in a day to begin with and can charge at home, so it doesnt really matter if its 250 or 350.

IMO, the full range test would be more useful going 70+ on a highway. In Texas going between Dallas, Austin, Houston, I routinely set cruise control between 85-90 if traffic allows. If i can make a 220 mile trip from Austin to Dallas without stopping, I would love to know if possible when I plan to get an EV.

I can do 220 miles at 85mph in my M60 under reasonable weather, no problem. If you hit strong winds it could be iffy but I imagine there are charging stops for edge cases.

As far as my trip log, I don’t have a ton of really long runs simply because we don’t like to drive more than three hours straight. Also the speed limit is higher on the freeway in one direction than it is the other.

I have one example from October in mild weather where I did 227 using 74% of the battery with cruise set to 85. That’s roughly 270 total range which is pretty good at that speed.

Another from March doing 204 miles using 80% of the battery - this one was different because we were only cruising at 75mph but had the skis on top, so some extra drag.

[Nahlem]

I think at lowest i had 136 or 123 miles at 80% that was after a cold hit with freezing below -18 to -25c heavy snow not every day ofcourse & nasty winds for a full week but that was only daily commuting and i was getting 25 kWh/100 km 21c in the car, still so. I guess it depends on on the situation but that was not highway speeds though to be fair. More or less a maximum of 49mph at best during those conditions. At highway speeds it would probably tank even more.

I think i remember my i3 had at it lowest somewhere around 93 miles during similar conditions. at 100% charge to be fair.

[ixDriver]

Agreed I prefer "range tests" at full highway speed.
For me, "range" is how far I can go on a road trip without having to stop, and how few charging stops I can make on longer ones. Especially winter range, when all the holidays happen and I am making multiple trips in cold weather.

City/local/mixed use is just whether I need to plug in at my home garage 1x or 2x/week.. negligible lifestyle difference.

[NomoTesla]

Getting over 380 miles here in Arizona. Sorry to those with lead feet! lol

[hotrod182]

Originally Posted by mckman

The Edmunds numbers are not useful for estimating range for a long highway trip. They drive 60% city and 40% highway. Plus they stay within 5 mph of the posted speed limits whenever possible.

Isn't highway range currently the EV's achilles heel? These numbers might be useful for comparison purposes but if you never run out of range driving 60/40 city/highway and hardly ever drive as slow as they do in the test then what's the point?

What we really care about is highway range at the average flow of traffic.

The i4 is unusual in that the HWY rating is as good or better than the city range. In my i4 M50, spirited driving around town always leaves me with a range below 200 miles. Usually 160-180 miles on a full charge. But the other day I took a 131 mile highway round trip to Los Angeles. Made it back home with 54% charge, and 155 miles remaining. Cruise control set at 75 mph, occasional bursts to 100 mph, and the usual traffic jams down to 15 mph. The i4 is a great highway cruiser.

[Bimmerfun82]

Originally Posted by hotrod182

The i4 is unusual in that the HWY rating is as good or better than the city range. In my i4 M50, spirited driving around town always leaves me with a range below 200 miles. Usually 160-180 miles on a full charge. But the other day I took a 131 mile highway round trip to Los Angeles. Made it back home with 54% charge, and 155 miles remaining. Cruise control set at 75 mph, occasional bursts to 100 mph, and the usual traffic jams down to 15 mph. The i4 is a great highway cruiser.

Great info. I heard Audi and Porsche are like this as well and have two gears one for lower speeds and one for higher which results in the outcome of lower city range and higher highway range. Tesla is the opposite. I believe it’s the regen that makes teslas so effective at speeds below 60 mph with stop and go. If I drive at 75 mph my efficiency is ~300 wh/mi, which is a range of approximately 275 miles (full charge range is “officially” 330 miles). If I drive around town I get the 250 wh/mi number which is true range.

[Fast400]

Who measures in kW/h?? kW per xx miles, or xx miles per xx percent is ok...but kW/h...silly!

[StarkyLuv]

I've been seeing similar and even better results. Yes, it has a large battery, but this trip was driven mostly on the highway.

[Paladin1]

Getting well over 200 miles in the M60 at Interstate speeds plus is the norm in just about any conditions in my experience. The issue today is finding a working unoccupied charger at the end.