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There's no reason why Tesla can't calculate the accurate range in both places, is there? My 2022 Toyota RAV4 Hybrid has a "distance to empty" number that "lear

by Merad 3y ago

There's no reason why Tesla can't calculate the accurate range in both places, is there? My 2022 Toyota RAV4 Hybrid has a "distance to empty" number that "learns" based on your driving habits and typical mileage. It's not perfect, for example going on a road trip can throw it off (the hybrid gets significantly lower highway MPG than around town), but most of the time it's very accurate.

cmrdporcupine 3y ago
Yeah, there's no reason they couldn't do that, and most other BEVs do that. The fact that Tesla doesn't is I'd say, disappointing? and likely to give EVs a bad name in the long run. But could also reflect that this is a California company where they don't really have weather.
- ldbooth 3y ago
  Drive from from Sacramento to Tahoe in the winter... There's weather, and tons of ice/snow at elevation. Many here complain about how inaccurate Tesla's range calcs are driving to Tahoe. It's not the state, it's the amoral response to incentives.
stetrain 3y ago
They do have a range estimate based on recent driving, it’s just in a separate Energy page. “Accurate range” is difficult. It could be accurate based on recent driving, but that number could be very inaccurate if there is a change in weather or you are taking a different kind of drive than your last one.
- steveBK123 3y ago
  Probably showing range in 3 different places that don't really agree is bad right? We are HN tech crowd here so its all fun & games hobbyist stuff. But normies do not want to get into these types of inane subtleties. Arguably the front & center, always-there range display should be the most accurate, not the least accurate.
  - stetrain 3y ago
    Most accurate by what standard? Range depends on a bunch of factors. The range you got going to the store yesterday is not the range you will get driving to your friend’s house tomorrow. The car doesn’t know where you are going, whether it is city or highway driving, whether or not there is an elevation change, unless you tell it by navigating somewhere. It could take a guess, but that guess still has plenty of chances to be wrong if your next X miles of driving is not going to be similar to your previous X miles of driving.
    - deleted 3y ago
      [deleted]
    - steveBK123 3y ago
      Why should the car use an average .250 kWh/mi hardcoded rate on a car I have owned for 4 years when it knows my lifetime average is 0.300 kWh/mi? There's plenty of smarter things it can do by default other than "its hard, meh". They are gonna figure out how to do coast to coast self driving this year but can't project a reasonable battery range estimate given temperature/driver history/weather? Do they need more GPUs?
      - stetrain 3y ago
        That might be a useful metric but it won’t always be the most accurate. If you mostly drive around town, that estimate will be way off when you get on a highway to go to Grandma’s house. There’s probably a better way to do it, but Tesla seems to be optimizing for avoiding the “why does the website say 300mi but my car shows 200mi fully charged” support question, in exchange for a different set of support questions. I think ideally the car would give a best guess estimate, along with a clear breakdown of why this is more or less than the rated range. I just don’t think that’s clearly the “most accurate” option. Most accurate requires knowing where you are going.
        steveBK123 3y ago
        So make it a menu option - range estimator: best/worst/spec. It feels like one of those Muskisms where one bending of the truth requires more and more stuff down the line. If they weren't over optimizing for the EPA test to give almost unachievable range, then they wouldn't need to have the car range meter lie as well. But if you fib once, you need to keep fibbing and keep the fib straight.
- deleted 3y ago
  [deleted]
itsoktocry 3y ago
>but most of the time it's very accurate How can you know this without repeatedly running your car out of fuel?

by Merad 3y ago

cmrdporcupine 3y ago

Yeah, there's no reason they couldn't do that, and most other BEVs do that. The fact that Tesla doesn't is I'd say, disappointing? and likely to give EVs a bad name in the long run. But could also reflect that this is a California company where they don't really have weather.

ldbooth 3y ago
Drive from from Sacramento to Tahoe in the winter... There's weather, and tons of ice/snow at elevation. Many here complain about how inaccurate Tesla's range calcs are driving to Tahoe. It's not the state, it's the amoral response to incentives.

stetrain 3y ago

They do have a range estimate based on recent driving, it’s just in a separate Energy page. “Accurate range” is difficult. It could be accurate based on recent driving, but that number could be very inaccurate if there is a change in weather or you are taking a different kind of drive than your last one.

steveBK123 3y ago
Probably showing range in 3 different places that don't really agree is bad right? We are HN tech crowd here so its all fun & games hobbyist stuff. But normies do not want to get into these types of inane subtleties. Arguably the front & center, always-there range display should be the most accurate, not the least accurate.
- stetrain 3y ago
  Most accurate by what standard? Range depends on a bunch of factors. The range you got going to the store yesterday is not the range you will get driving to your friend’s house tomorrow. The car doesn’t know where you are going, whether it is city or highway driving, whether or not there is an elevation change, unless you tell it by navigating somewhere. It could take a guess, but that guess still has plenty of chances to be wrong if your next X miles of driving is not going to be similar to your previous X miles of driving.
  - deleted 3y ago
    [deleted]
  - steveBK123 3y ago
    Why should the car use an average .250 kWh/mi hardcoded rate on a car I have owned for 4 years when it knows my lifetime average is 0.300 kWh/mi? There's plenty of smarter things it can do by default other than "its hard, meh". They are gonna figure out how to do coast to coast self driving this year but can't project a reasonable battery range estimate given temperature/driver history/weather? Do they need more GPUs?
    - stetrain 3y ago
      That might be a useful metric but it won’t always be the most accurate. If you mostly drive around town, that estimate will be way off when you get on a highway to go to Grandma’s house. There’s probably a better way to do it, but Tesla seems to be optimizing for avoiding the “why does the website say 300mi but my car shows 200mi fully charged” support question, in exchange for a different set of support questions. I think ideally the car would give a best guess estimate, along with a clear breakdown of why this is more or less than the rated range. I just don’t think that’s clearly the “most accurate” option. Most accurate requires knowing where you are going.
      - steveBK123 3y ago
        So make it a menu option - range estimator: best/worst/spec. It feels like one of those Muskisms where one bending of the truth requires more and more stuff down the line. If they weren't over optimizing for the EPA test to give almost unachievable range, then they wouldn't need to have the car range meter lie as well. But if you fib once, you need to keep fibbing and keep the fib straight.
deleted 3y ago
[deleted]

itsoktocry 3y ago

>but most of the time it's very accurate How can you know this without repeatedly running your car out of fuel?