58 mpg On First Tank

Discussion in 'Gen 5 Prius Fuel Economy & Prime EV Range' started by VelvetFoot, Nov 15, 2025.

  1. ColoradoBoo

    ColoradoBoo Senior Member

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    No, I've heard too many stories of folks "topping off" their tanks which can risk getting gasoline inside the charcoal canister...and it's not cheap getting that replaced.

    I estimate the amount of gas she needs (like 7 gallons) and will turn the auto-fill level from "fast" to "slow" at around 5 gallons to finish it up. Once it clicks, that's it.
     
  2. HamiltonPrius

    HamiltonPrius Member

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    Just a one time thing to see how much gas there is from auto shutoff to overflowing.

    Do you know? If so you can save me the trouble.
     
    #42 HamiltonPrius, Jan 11, 2026
    Last edited: Jan 11, 2026
  3. VelvetFoot

    VelvetFoot Active Member

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    No, lol.
     
  4. Probity

    Probity Junior Member

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    @VelvetFoot - a thought just occurred to me - you seem to be getting what I consider to be stellar (at or above EPA estimates) fuel efficiency all things considered (winter in New York). I also remember seeing posts from you mentioning removing the plastic wheel covers and installing wheel center caps sourced from Amazon.

    So - the mpg's you've observed to date - are all those with the plastic aero-wheel covers off? And I "assume" some mix of city/hwy driving?

    I ask because, my daughter in southern California is in the camp of those that don't like the looks of the plastic wheel covers (her comment is "makes it look like a Tesla"), and she prefers the look of the alloy wheels 'hidden' under the wheel covers. I earlier told her that after I drive her LE from Louisiana to Socal I could remove her wheel covers if she wanted but that she might experience a slight drop in overall mpg's. [I shamelessly stole your idea and ordered the exact same wheel center caps off Amazon that you did and also verified they fit, so ready for exposing the alloys].

    So I'd love to be able to tell her it's at least possible from your experience to get at/close to EPA mpg's even with the wheel covers off - but want to make sure that's what you're actually doing.
     
  5. VelvetFoot

    VelvetFoot Active Member

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    @Probity , I never removed the wheel covers, except to put on the center caps.
    That must've been somebody else.
    I like the look of the wheel covers.
    One COULD be of the opinion that it makes the rotors appear less tiny, which is also a thing, apparently.. :)

    Tangentially, I recently got the oil changed by the dealer and they may have put in 0W16 instead of 0W8.
    I think I'm getting less mpgs.
    Hard to prove though. :)
     
    #45 VelvetFoot, Feb 4, 2026 at 8:21 PM
    Last edited: Feb 4, 2026 at 8:45 PM
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  6. 2023p

    2023p Active Member

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    I think similarly about the oil weight, who knows if it alls add up. During my first 10k I think I was averaging about 62.8 mpg , will find out - possibly - next oil change, going to make sure it's 0W8.

    Edit: went back and looked and for the first 4k miles it's was 63.9, sheesh.
     
    #46 2023p, Feb 5, 2026 at 2:54 AM
    Last edited: Feb 5, 2026 at 3:07 AM
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  7. VelvetFoot

    VelvetFoot Active Member

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    Again, awesome!

    You can do your best, but how do you really know what they put in there?

    MINI(BMW) had a video you could access of the tech's work.
    Then again, they weren't too cheap, and I never used it.

    In this case, I reminded the service writer that spec was 0W8.
    When I got the receipt, it said 0W16 on it.
    They told me the tech wrote down the wrong info.

    I accepted that...trying to keep the Fahrvergnügen feeling going, lol.
    They have a cappuccino machine, after all.
    Next time, at 10k miles, I'll be more vociferous. :)

    PS: Again, excellent recommendation on the seat covers-they holding up great!
     
  8. Probity

    Probity Junior Member

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    Thanks for the clarification, I'll reiterate the potential downside and let her decide if form or function is more important.

    I'll find out in a week or so if her local dealer uses 0w-8 or 0w-16, 1st task after my trip is getting a smog test (for the title transfer), 2nd task is oil/filter change, 3rd task is enduring the joys of California DMV antics.
     
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  9. VelvetFoot

    VelvetFoot Active Member

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    Hey, it's something to do. :)