1. Attachments are working again! Check out this thread for more details and to report any other bugs.

How are these people on Fuelly getting such bad MPG's???

Discussion in 'Gen 5 Prius Main Forum' started by Preebee, Oct 23, 2023.

  1. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    upload_2023-10-23_10-29-10.png

    upload_2023-10-23_10-29-36.png


    I don't even think you could get that bad of fuel economy on a test track going WOT all the time. Maybe at a drag strip?
     

    Attached Files:

  2. Mr.Vanvandenburg

    Mr.Vanvandenburg Senior Member

    Joined:
    Mar 15, 2007
    1,224
    457
    0
    Vehicle:
    2020 Prius Prime
    Model:
    Limited
  3. hill

    hill High Fiber Member

    Joined:
    Jun 23, 2005
    20,173
    8,353
    54
    Location:
    Montana & Nashville, TN
    Vehicle:
    2018 Chevy Volt
    Model:
    Premium
    Yep. Short trips and cold weather will do this every time
     
  4. ETC(SS)

    ETC(SS) The OTHER One Percenter.....

    Joined:
    Oct 28, 2010
    7,855
    6,656
    0
    Location:
    Redneck Riviera (Gulf South)
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Winter.....
    Normal Drivers.....
     
  5. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,671
    39,221
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Some owners seeing “better” mpg are just relying on what Toyota says on the dash, which is about as optimistic as they can get away with.

    that said, with the 2023 Prius, the dash display of mpg is finally accurate?
     
    #5 Mendel Leisk, Oct 23, 2023
    Last edited: Oct 23, 2023
    douglasjre and Roqu3 like this.
  6. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    Winter?

    Normal drivers?

    Where is it winter over the last couple months of fill-ups? Siberia?

    39 MPG's in the G5 is gonna require 2 mile trips only with both pedals mashed to the floor at the same time during lol.

    You're cheating. You have a plug! :p

    Much better.

    Tank average is normally within a few % pts.
     
    #6 Preebee, Oct 23, 2023
    Last edited by a moderator: Oct 24, 2023
    Mendel Leisk likes this.
  7. CooCooCaChoo

    CooCooCaChoo Senior Member

    Joined:
    Jan 7, 2015
    930
    522
    0
    Location:
    Cow-lee-fornia
    Vehicle:
    2023 Prius
    Model:
    LE
    They've probably got two lead feet to get such crappy fuel economy.
     
    hill and Preebee like this.
  8. Trollbait

    Trollbait It's a D&D thing

    Joined:
    Feb 7, 2006
    22,447
    11,760
    0
    Location:
    eastern Pennsylvania
    Vehicle:
    Other Non-Hybrid
    New cars can mean more playing with it.

    Can't rule out bad data or errors.
     
    Mendel Leisk likes this.
  9. HacksawMark

    HacksawMark Active Member

    Joined:
    Jun 29, 2023
    449
    312
    0
    Location:
    Oregon
    Vehicle:
    2023 Prius Prime
    Model:
    XSE
    It's the way they are driving their cars, pure and simple. Years ago, I had a 2005 Honda Civic hybrid and was able to achieve 44-46 mpg consistently which I used for my work. Another employee had a 2006 Civic Hybrid and complained they could only get 35 mpg. So one day, I asked to accompany them on their service calls and drove their car. By the end of the day, their mpg readout showed over 48 mpg.
     
    nerfer and Preebee like this.
  10. Trollbait

    Trollbait It's a D&D thing

    Joined:
    Feb 7, 2006
    22,447
    11,760
    0
    Location:
    eastern Pennsylvania
    Vehicle:
    Other Non-Hybrid
    CR didn't exactly get high numbers with past Prius models in tests. Some people do actually drive like that in real life.
     
  11. hill

    hill High Fiber Member

    Joined:
    Jun 23, 2005
    20,173
    8,353
    54
    Location:
    Montana & Nashville, TN
    Vehicle:
    2018 Chevy Volt
    Model:
    Premium
    Some of the poor slobs up in Alaska during winters on short drives only get milage in the 30s mpg. So quit your crying & complaining. Noth8ng new here.
    ;)
    .
     
    #11 hill, Oct 23, 2023
    Last edited: Oct 23, 2023
    Roqu3 likes this.
  12. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    I don't know. While Kansas is not Alaska, it gets pretty damn cold down here. I would have to work really hard to average 30's over an entire tank. I never averaged less than 50's on the 2019. And some days it was so cold, the battery barely cranked. Eventually, the Prius warms up and you're back in business. Yes, the ICE fires more often to keep the heater warm.

    Nobody said these folks live in Alaska BTW. Just checked Anchorage's weather forecast and its high 30's-40's.
     
  13. hill

    hill High Fiber Member

    Joined:
    Jun 23, 2005
    20,173
    8,353
    54
    Location:
    Montana & Nashville, TN
    Vehicle:
    2018 Chevy Volt
    Model:
    Premium
    when people learn more about their prius - one of those many first things they learn is there is no cranking of a battery to start up the Prius. all that happens when the start button is pushed - is the systen boots up into ready mode. The traction pack then seamlessly turns over the ice as is necessary
    ;)
    .
     
  14. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    Drive Unwisely and the 2023 Prius MPG Drops To This Low Value | Torque News.

    This was an interesting article on a group that tried to get the worst fuel economy they could with the new Prius.

    Spoiler alert! They didn't get 30's.

    One advantage they had is that they drove it non-stop I think. Once the G5 warms up, it is incredibly efficient and quick to shut off. Tiny trips are the vehicle's nemesis. But who has ONLY tiny trips? Eventually the battery will be highly charged from all the "warm-up" events - offering nice EV range and evening things out.
     
    AndersOne likes this.
  15. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    Were you in reefer mode when you were posting just now?
     
    douglasjre likes this.
  16. Gokhan

    Gokhan Senior Member

    Joined:
    Oct 5, 2008
    4,958
    1,949
    0
    Location:
    Paramount CA
    Vehicle:
    2021 Prius Prime
    Model:
    Limited
    That is because they do not drive 40-mph on country roads in long trips like you do. mpg will be inversely proportional to the square of the speed.
     
    PhoS and AndersOne like this.
  17. AndersOne

    AndersOne Active Member

    Joined:
    Jun 10, 2023
    332
    189
    0
    Location:
    Europe
    Vehicle:
    2023 Prius Prime
    Model:
    N/A
    Yep, the WLTP "Extra High" for the Prime (which is just slightly worse) is stated as 5,6l (42mpg) and includes average speed of roughly 100kmh (60mph) with a maximum of 130kmh (80mph). That does not seem alot for long distance "high speed" travel.... soon we will have some realistic Autobahn mpgs.
     
    Gokhan likes this.
  18. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

    Joined:
    May 12, 2018
    7,427
    6,913
    1
    Location:
    Pennsylvania
    Vehicle:
    2018 Prius c
    Model:
    Two
    A Prius always shows its best fuel economy when you need neither heat nor air conditioning on longer trips with little elevation change. Heck, most cars will do their best in those circumstances.

    Autumn in Kansas fits the bill for optimum conditions.
     
    Zythryn and Trollbait like this.
  19. Preebee

    Preebee Senior Member

    Joined:
    Jul 13, 2020
    866
    758
    4
    Location:
    Midwest
    Vehicle:
    2023 Prius
    Model:
    LE
    Sorry, your transmission was garbled with false assumptions and other desperately inaccurate utterings.

    The majority of my driving is city, with numerous lights, turns, stops and starts.
     
  20. Trollbait

    Trollbait It's a D&D thing

    Joined:
    Feb 7, 2006
    22,447
    11,760
    0
    Location:
    eastern Pennsylvania
    Vehicle:
    Other Non-Hybrid
    Visit the Fuelly forums, and you'll find posts about errors.

    Short trips in which the engine is barely warmed up really do drop efficiency. So will the 19 inch wheels, as well as low tire pressures, lots of idling, etc.

    Then some people are just inefficient drivers. The economy of their other cars aren't impressive either. Including 38.6mpg for a 2005 Prius. I had to do 85+mph to get figures like that from mine.