cross-posted from: https://lemmy.world/post/22892955
The Prius Prime is a dual fuel vehicle, able to run 100% on Electric, or 100% on gasoline, or a computerized blend in-between. This presents me a great opportunity to be able to do a direct comparison with the same car of an EV engine vs an ICE engine.
Toyota computer claims 3.2mi-per-kwhr.
Kill-a-watt (https://en.wikipedia.org/wiki/Kill_A_Watt) claims 2.2mi-per-kwhr.
Additional 1.5% losses should be assumed in the wires if you wish. (120V drops down to 118V during charging, meaning 2V of the energy was lost due to the resistance of my home’s wires).
Level 1 charger at home (known to be less efficient).
Toyota computer claims 53miles-per-gallon (American Gallon).
I have not independently verified the gallon usage of my car.
295 miles driven total, sometimes EV, sometimes Gasoline, sometimes both.
30F to 40F (-1C to 4.5C) in my area this past week.
Winter-blend fuel.
12.5miles per $electricity-dollar (17.1c / kw-hr home charging costs)
17.1 miles per $gasoline-dollar ($3.10 per gallon last fillup).
If anyone has questions about my tests. The main takeaway is that L1 charging is so low in efficiency that gasoline in my area is cheaper than electricity. Obviously the price of gasoline and electricity varies significantly area-to-area, so feel free to use my numbers to calculate / simulate the costs in your area.
There is also substantial losses of efficiency due to cold weather, that is well acknowledged by the EV community. The Prius Prime (and most other EVs) will turn on a heater to keep the battery conditioned in the winter, spending precious electricity on battery-conditioning rather than miles. Gasoline engines do not have this problem and remain as efficient in the winter.
I originally wrote this post for /c/cars, but I feel like EVs come up often enough here on /c/technology that maybe you all would be interested in my tests as well.
Putting my edit at the top.
You completely changed your response to me so now it looks like i am responding to something you didnt say. I should have quoted i guess.
Anyway, gonna leave the comment i made as some of it is still relevant.
It’s not baseless though is it?
They saw your results and asked for confirmation around the way your car calculates mpg m/kwh. Stating that many manufacturers state the mpg of a hybrid based on the combined milage gained from fuel and battery.
Based on this, he is requesting information around how you calculated your numbers. and asking why you use the company stated range for fuel (which might be fuel and battery but also might not) but use your own battery range measurements.
This in and of itself is a fairly innocent question, and if youbare carrying out tests, then you should be open to criticism or query around your method.
In order to get reliable outputs, you need to make reliable inputs.
None of this is to say you are wrong. You may absolutely have planned these tests perfectly, and the other person may be wrong. But if they are, then prove it. They have made a good point. If you have accounted for the issue they are bringing up, then you should have an answer to dispute them.
Aaaannnyway
This is all irrelevant. My point was only that they asked you a question (again, making a claim that was not “baseless”), and you blew up.
This is how it looks from the outside.
Now if you address their claim then this whole matter is put to bed. But by all means, carry on insulting them.
I suppose its none of my business.
I made it clear that to do the test they’re asking for is four fucking hours of test at a minimum.
And then they come back and call me fucking biased. Okay you fucking asshole. You run the test. Don’t complain to me.
The fucking gasoline test is going to take a long time, it’s going to force me off of EV mode for literally days and I’ve actually got busy things this week (wedding, work, etc. etc). I have no time to do a substantial gasoline test anytime soon.
The other asshole hasn’t tested jack shit and is just bullshitting from his keyboard. I owe him, and you, nothing.
I’ve offered my test data on the internet. I don’t have anything else to offer.
As I said before and I’ll say it again: if he wants to spend hours answering this question, and if I get a free stab to call him biased in the new topic he makes, then yes, I’ll change my tune. But we all know he’s just trolling me.
What, you think I have the test data you want or something? That these fuel test results magic themselves out of the air? Someone actually has to take the time and do this test.
Lulz. I owe you and him nothing. I did the tests in the top of the page and I stand by my tests. I don’t owe additional tests (let alone fucking hours of work) to anyone else.
Do you think the temperature stays still? The temperature in my area is back up to 50F today, which if I started the gasoline test it would have negated the results. This shit changes per fuel type and and per temperature.
Ok, so you look for other test data, then right? You aren’t the only person with that car who has tested it, surely. You aggregate that data, you work off an average, and if it’s almost or exactly what the manufacturer is claiming, then you are good. If it’s quite different than that claim, then you know the data is unreliable, and therefore, you dont draw conclusions based on that data.
You dont need to do 4 hours of testing yourself. If there is other data out there, you can take an average.
Or actually, maybe you should do 4 hours of testing before submitting your results. Maybe that’s just being thorough. Maybe it’s not actually that long and can be done as a part of your normal driving.
And hang on, you said in your original post that liquid fuel engines dont have the same problem of being affected by weather. So why are you now claiming the temperature changing is going to affect your fuel results?
And just to address this, you are rightz you dont owe me or that person any answers, assuming that we dont make a valid point. You made the claim in the begining based on your testing these are the results, that person disputed your results, based on faulty input, so now you do have to address this and come back with more rigorous testing and results to make a claim that gas is cheaper than electric (in your area)
otherwise, what use is your data? It doesnt help people choose the right car if you cant verify the accuracy of the data and it doesnt say much about the peraon carrying out the tests if they freak out the moment they are challenged on their results.
I am serious about what i am about to say.
Dont respond to me. Come back in a week when you have had long enough away from this. I bet you won’t even be bothered to respond by then. This won’t matter then. That person won’t matter then. You are just angry and are getting worked up.
Yes. But you know who owes me something? The other guy owes me to take back his baseless bias accusations.
Come back in a day, week, month or year. It won’t be taken back.
You are issuing challenges to the wrong guy. I have nothing more to give you or prove to anyone here. (Well, I’ll do a gasoline test eventually because I truly am curious. But it has to wait until I’m personally got the time for it).
Why should I give a shit about that? I’m not like a professional journalist with a reputation to uphold. Lol.
Again. They aren’t baseless. He has rightfully stated that the data you based your whole post on is likely wrong. Meaning your conclusion is likely wrong. You aren’t able to address this as you say you are too busy to carry out the test.
You want them to take it back. Do so.e research, and prove them wrong. Otherwise, stop shouting.
All due respect my dude. Have a good day. Dont let this ruin it ( im sure it wont)
You know what would solve all of this?
I have an alternative plan. How about YOU run a 200 mile test? Go rent a Prius or borrow one from a friend. Drive it 200 miles in the 30F winter cold and tell me how many gallons were used.
I’ll wait. A day, a week, a month, a year. Go put your actions where your mouth is.
Oh, you won’t do it? What about the other guy? Uh huh. You expect me to do it?
Well there’s the rub, ain’t it? I guess I just accept that I’m biased then.
With what evidence? Please, I seem to have missed it.
I dont own a prius prime. Bit more difficult for me to test it. However after some research i can see many people claim on pure fuel they see mpg ranging for 30-42 mpg.
Only when combined with electric do they see 50mpg and above.
So based on this i would say your numbers are wrong.
And this guy in this thread says his Prius gets 45mpg to 63mpg, depending on conditions: https://lemmy.world/comment/13866193
Oh wait, my numbers say 53mpg. American gallons and American miles.
Now unless you have done a test yourself, bugger the fuck off. I’m not interested in Internet rumors, I’m interested in the Truth. I don’t know how the fuck your numbers are so far away from reality but that’s your problem.
The fact remains that I have hard numbers and have run the tests. You haven’t.
You haven’t run fuel tests. That was the whole point of the argument.
Ok soni saw 30 to 42 you saw 45 to 63
Lets take an average with the numbers we have.
30 +42+45+63=180
180÷4=45
So 45mpg… less that what you used to calculate your costs.
Dont tell me to bugger off because i haven’t done tests when you have also done no tests on fuel.
I know somethi g that will piss you off.
I drive an electric car.
It costs me 7p (about 9 cents) per kwh to charge.
It cost me £11.68 (about $14.89) to charge last month and i get about 3-4 miles per kwh.
I travelled 487 miles last month from the 1st to the 30th.
It cost me 2.4 pence (about 3 cents) per mile to drive this car.
American miles are the same as british miles
And i pulled the mpg data from american sources so your gallons are the same.
So despite your findings, my electic car costs less than your hybrid to run.
But i doubt your data is accurate, so thats fine.
No, you didn’t run any gas tests, you just quoted Toyotas figures, and your data set for electricity is rather small.
My running costs are from years of actual electricity charges, not some home electricity kit, and I saved about 80% over my petrol car running costs, even before the cheaper servicing and better value retention.
The funny thing is that you really don’t think that you are, and that it’s just all the nasty EV drivers out to dupe you that their running costs were lower and you seem to think that everyone is lying and dishonest except you.
It doesn’t seem to occur to you that your electric costs are higher and your gas costs are lower than some people.
BTW: Seriously, you seem naive to me so let me give you a serious protip.
If someone thinks you are biased on the internet, and you owe them nothing (not like a close friend or a family or something), you STOP TALKING WITH THEM BECAUSE ITS A WASTE OF TIME. And I’ve found that shouting, and direct insults, is the fastest way to make it clear that I’m ending the discussion.
Again: don’t waste your time trying to prove yourself against baseless accusations on internet. Its not worth the hassle. If you find yourself doing that, you are the one who will get stressed out in the long term.
So I reject your advice and instead replace it with the exact opposite. Get angry. Shout, end the discussion. Then move on with your life. The discussion has been blown up, so its easier to move on. Don’t lol “do research” on behalf of other people who don’t give two shits about you and drag on the unnecessary discussion for days. They never were going to believe you anyway, because they thought you were biased from the start.
Take your arrogance and shove it up your butt mate.
You can say its baseless as much as you want. It wont make it true. They called you out. You didnt like it. And like a little baby you cried and kicked off on them.
Like i said in my response to your other reply. The real world mpg is closer to 30-42mpg on pure fuel according to research i have done.
So your numbers are duff. And so is your attitude.
I think you mean me with the name calling!
Don’t pretend you did a big fair test when you did a small test and quoted manufacturer figures for the other side.
I have a few years of data, not a few hours of data like yours, and filling my fun to drive EV with electricity costs my about a fifth as much as filling my petrol car did each month, with the same commute. My data is based on what the electricity company actually charged me during the cheap tariff hours, not some weird calculation based on some electrical testing kit.
You seem to be ignoring and distrusting data that disagrees with your position and amplifying things that agree with it. I wonder if there’s a word for that kind of selective hearing.
Yes. Apologies for that. I’m thinking plenty of things on this subject.
But rest assured I’m mad and I’m proud to display my anger on this discussion. I can see you are an honest and reasonable outsider so it’s different than the other guy.