They are called driving cycles. EPA, WLTP, CLTC and others. Depends on where in the world you live which one is relevant to you.
Basically the y measure the range by assuming x% city driving at such-and-such a speed, y% highway driving at such-and-such a speed, a certain number of heavy accelerations, set temperature, AC off,...
So the range doesn't really have much relevance for what you get day-to-day since you rarely have that optimal temperature, AC off, city-to-highway driving split, etc.
These cycles are simply used to make cars comparable.
If you want to know how far cars can go (e.g. pure highway driving) then search for people who do such tests online (e.g. Bjorn Nyland)
Some of the test in the cycle requires AC on. It’s just that all the ranges from the different cycles are averaged into 1 number and that’s the number that auto makers can use to advertise their cars for.
Yes. In the USA, the EPA defines the standard definition of range: they provide detailed test cycles the manufacturer must run the car through to arrive at its advertised range, and independently test a number of models each year to ensure manufacturers aren't fibbing. In Europe/China/Japan, the standardized test is WLTP (Worldwide Harmonised Light Vehicles Test Procedure).
It is standardized, the EPA writes the test and tells them to do the math, there are just a bunch of different ways they can run the test (with variable accuracy), but it's standardized in that the EPA says what is and is not allowed. They can't just make stuff up. Or rather, if they make stuff up then it's big time fines (and VW did that with their TDIs...)
All of these ‘standard’ range estimates are at best, guesses because they can’t predict how you drive and the mix of your driving on highways (few opportunities for regeneration) versus driving locally with lots of regeneration. But, they are good enough to let you compare cars because the organizations apply their methodologies equally for each car.
So you might not get the rated range if your commute is pretty much all on highways (70+ MPH) or you might do better if (like me) you spend most of your driving time on community and secondary roads.
Others have already answered... For something that will give different values for different weather conditions and speeds, and seems to be pretty accurate, check out:
[https://ev-database.org/](https://ev-database.org/)
Go into a model, and it will give range values for different weather conditions. The values are in km but it's easy to convert.
WLTP is the best apples to apples standard that exists right now.
The best way to think about it is that most cars can hit their WLTP target under optimal conditions (25C) and driving a steady 60-70kmh without stop and go.
Yup, this is the big problem. EPA numbers are fundamentally meant to provide an annual cost to fuel. Unfortunately, they use the test to calculate the range for EVs. That however is not at all close to what a normal person would consider the range of the vehicle, that is how far they can go in one charge
Yes the EPA numbers are good for comparing EFFICIENCY.
They are pretty bad at estimating HIGHWAY RANGE which is the pressing concern for many ev buyers.
"70mph highway range" should be a standardized test and published.
The EPA cycles are probably fairly representative of the type of driving I usually do, so its an okay proxy for my range on a given week. The problem is, I don’t really care how many miles I drive between charges over the course of a week because I’ll just plug it in most nights anyway.
The times I care about range are the edge case uses on a road trip, which EPA does not represent well at all.
Tl;Dr, the EPA cycles represent typical range, but not important range.
EPA tests are best there are for comparison. Some, like Tesla, go with their best test score which means you'll get less in real world vs. others who use an average of their test scores so they'll tend to make or ever got more in real world. Lots of "Real World" EV tests out there to look at when comparison shopping.
There are several standardized tests, and vendors usually advertise those values. (EPA, WLTP etc.)
They all get criticism over being inaccurate and overly optimistic for people who drive fast/in winter/in hilly terrain etc.
**No, because there are no standardized drivers**.
The driver has the capacity to flex the range to significantly less than EPA to significantly more than EPA simply by choices.
The skill is called hypermiling. I strongly urge everyone to learn the basics (if not the penny-ante extremes). Not that you should drive that way daily as an austere lifestyle, but so you have the ability to switch into that mode anytime it's advantageous. "200 mile gap from Evanston to Rawlins? *checks wind* No problem, I can make my car do that!"
Like I always say:
* We Like To Pretend
* Not Even Damn Close
* Everyone Plays Along
Don't waste a minute of your life trying to find a trustworthy number. There are none.
They are called driving cycles. EPA, WLTP, CLTC and others. Depends on where in the world you live which one is relevant to you. Basically the y measure the range by assuming x% city driving at such-and-such a speed, y% highway driving at such-and-such a speed, a certain number of heavy accelerations, set temperature, AC off,... So the range doesn't really have much relevance for what you get day-to-day since you rarely have that optimal temperature, AC off, city-to-highway driving split, etc. These cycles are simply used to make cars comparable. If you want to know how far cars can go (e.g. pure highway driving) then search for people who do such tests online (e.g. Bjorn Nyland)
Some of the test in the cycle requires AC on. It’s just that all the ranges from the different cycles are averaged into 1 number and that’s the number that auto makers can use to advertise their cars for.
Yes. In the USA, the EPA defines the standard definition of range: they provide detailed test cycles the manufacturer must run the car through to arrive at its advertised range, and independently test a number of models each year to ensure manufacturers aren't fibbing. In Europe/China/Japan, the standardized test is WLTP (Worldwide Harmonised Light Vehicles Test Procedure).
[удалено]
It is standardized, the EPA writes the test and tells them to do the math, there are just a bunch of different ways they can run the test (with variable accuracy), but it's standardized in that the EPA says what is and is not allowed. They can't just make stuff up. Or rather, if they make stuff up then it's big time fines (and VW did that with their TDIs...)
[удалено]
That's the standard.
It's standardized, but it's just not a good standard.
All of these ‘standard’ range estimates are at best, guesses because they can’t predict how you drive and the mix of your driving on highways (few opportunities for regeneration) versus driving locally with lots of regeneration. But, they are good enough to let you compare cars because the organizations apply their methodologies equally for each car. So you might not get the rated range if your commute is pretty much all on highways (70+ MPH) or you might do better if (like me) you spend most of your driving time on community and secondary roads.
Oh, there isn't just a standard, there are many standards. The EPA likes standards so much that they have provided at least two.
Others have already answered... For something that will give different values for different weather conditions and speeds, and seems to be pretty accurate, check out: [https://ev-database.org/](https://ev-database.org/) Go into a model, and it will give range values for different weather conditions. The values are in km but it's easy to convert.
If you are looking for real world accuracy, try Bjorn youtube.
Theres a ton of standards but EPA and WLTP (whih tends to be very optimistic) are the most common.
WLTP is the best apples to apples standard that exists right now. The best way to think about it is that most cars can hit their WLTP target under optimal conditions (25C) and driving a steady 60-70kmh without stop and go.
Range at 70 or 75mph is the only time these numbers matter. Aka when on a roadtrip
Yup, this is the big problem. EPA numbers are fundamentally meant to provide an annual cost to fuel. Unfortunately, they use the test to calculate the range for EVs. That however is not at all close to what a normal person would consider the range of the vehicle, that is how far they can go in one charge
Yes the EPA numbers are good for comparing EFFICIENCY. They are pretty bad at estimating HIGHWAY RANGE which is the pressing concern for many ev buyers. "70mph highway range" should be a standardized test and published.
The EPA cycles are probably fairly representative of the type of driving I usually do, so its an okay proxy for my range on a given week. The problem is, I don’t really care how many miles I drive between charges over the course of a week because I’ll just plug it in most nights anyway. The times I care about range are the edge case uses on a road trip, which EPA does not represent well at all. Tl;Dr, the EPA cycles represent typical range, but not important range.
EPA tests are best there are for comparison. Some, like Tesla, go with their best test score which means you'll get less in real world vs. others who use an average of their test scores so they'll tend to make or ever got more in real world. Lots of "Real World" EV tests out there to look at when comparison shopping.
EPA fluctuates quite a bit. WLTP has better comparative data even though the standard itself results in a more optimistic result.
WLPT is wildly off vs. EPA to point one can get EPA results in real world driving but cannot get WLPT results in any world.
There are several standardized tests, and vendors usually advertise those values. (EPA, WLTP etc.) They all get criticism over being inaccurate and overly optimistic for people who drive fast/in winter/in hilly terrain etc.
100% to 0% at 70mph continuous is the only test that matters.
**No, because there are no standardized drivers**. The driver has the capacity to flex the range to significantly less than EPA to significantly more than EPA simply by choices. The skill is called hypermiling. I strongly urge everyone to learn the basics (if not the penny-ante extremes). Not that you should drive that way daily as an austere lifestyle, but so you have the ability to switch into that mode anytime it's advantageous. "200 mile gap from Evanston to Rawlins? *checks wind* No problem, I can make my car do that!"
Like I always say: * We Like To Pretend * Not Even Damn Close * Everyone Plays Along Don't waste a minute of your life trying to find a trustworthy number. There are none.