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.

  • dragontamer@lemmy.worldOPEnglish
    1·
    13 days ago

    Look man, under no uncertain terms I’ve stated the following:

    I’ve lost trust and faith that you and I could have a reasonable discussion.
I’m willing to insult you directly to make the point#1 crystal clear.
    • davidagain@lemmy.worldEnglish
      1·
      13 days ago

      I think the main reason that we don’t have a reasonable discussion is that you take even mild disagreement as a huge personal insult, fly off the handle and, swear and call me names rather than address any of the substance I ever posted. I pointed out that you quote manufacturers data on gas efficiency uncritically but are supremely skeptical about their electricity efficiency and you responded with rage that I dare question you. If you can’t debate people who even mildly disagree and you think your only recourse is insults shouting, I think that’s unusual, doesn’t support your position as much as you seem to think, and certainly doesn’t sweep away the impression of bias you were so angry about, far from it.

      You explained elsewhere that the shouting, anger and insults are a debating technique you use to shut down dissent. I’m afraid it’s not quite cowering me into silence the way you wanted it to and it certainly doesn’t make me think you are at all objective or even handed.

      • dragontamer@lemmy.worldOPEnglish
        1·
        13 days ago
        Look man, under no uncertain terms I’ve stated the following:

I’ve lost trust and faith that you and I could have a reasonable discussion.
I’m willing to insult you directly to make the point#1 crystal clear.
        • davidagain@lemmy.worldEnglish
          1·
          12 days ago

          Apparently you’re not just willing to insult me, you’re willing to delete everything I said in realtesla where you’re a mod and ban me! Lol. Great debating technique from brave “dragontamer” right there.

          Well, I can see that you’re going to protect your little EV hate club from anything that might be construed as good about pure EVs.

          For the record, Musk is a dick and I won’t ever buy one of his cars, the after sales support is non existent and there are no buttons, only touch screens, but you were never looking for any points of agreement with me, you were only trying to shut me down for daring to question your wholehearted devotion to manufacturers gas efficiency claims.

        • davidagain@lemmy.worldEnglish
          1·
          13 days ago

          Did you mod-delete my post on realtesla because it linked to your shouty behaviour here, or because you really genuinely think that it’s off topic to point out that it would have been fairer to treat the gas efficiency figures with the same skepticism as the electricity figures?

            • davidagain@lemmy.worldEnglish
              1·
              12 days ago

              I think it was because I linked to your shouty behaviour here. When it was just that I spend about a fifth as much on electricity as I did on petrol, you let it stand, but as soon as I linked to your rants over here it got mod deleted (by you).

              I think you like to come across as fair and even handed when you’re just trying to score points against EVs, so you don’t want folks over there to see how abusive you got over here.