Best MPG to date...

Discussion in 'Gen 4 Prius Fuel Economy' started by Terry Lee Thompson, Jan 13, 2018.

  1. TinyTim

    TinyTim Active Member

    Joined:
    Nov 23, 2016
    331
    208
    0
    Location:
    Seattle
    Vehicle:
    2017 Prius
    Model:
    Two
    I took a rare 84 mile trip (each way) down and back. I did my best on the way down using every trick that I have learned. 70.8MPG according to the trip computer. On the way back 64.6MPG without putting in much effort mostly because the passenger wanted to get home fast. This was all mostly freeway driving down I-5 from Seattle to the Olympia area. Have photo evidence to document both directions mileage. My goal was 60MPG overall. I like to set the bar low.

    I personally think that any submitted best mileage should be on a trip on mostly level terrain and 50 miles or more. My hypermiling trip 84 miles was the best I can do. I think my trip 70.8mpg trip is about as good as Gen4 Prius technology has. My only tip to my many techniques besides driving by hand and in eco mode. Drafting big rigs and SUV's was used.

    **best case mileage can only be achieved with the summer ethanol mix.
     
  2. Surge Lord

    Surge Lord Junior Member

    Joined:
    Aug 21, 2019
    17
    2
    0
    Location:
    Ontario
    Vehicle:
    2016 Prius
    Model:
    N/A
  3. Surge Lord

    Surge Lord Junior Member

    Joined:
    Aug 21, 2019
    17
    2
    0
    Location:
    Ontario
    Vehicle:
    2016 Prius
    Model:
    N/A
     
  4. Prodigyplace

    Prodigyplace Senior Member

    Joined:
    Nov 1, 2016
    11,698
    11,286
    0
    Location:
    Central Virginia
    Vehicle:
    2017 Prius
    Model:
    Two
    I get 55 or better with highway driving on my Trim 2 . Sounds like the Eco did not gain much fuel economy over the Trim Two.
     
    jerrymildred likes this.
  5. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    10,248
    12,572
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    That's about what my wife gets with her trim 2 also. She has quite a few short trips that pull her average down a little bit. But once in a while, she hits the jackpot on a short drive. This one was with an already warmed up engine after her last stop coming home from about 8 miles away. The 1.5 miles crossed a low hill and finished maybe 25 feet higher than where it started.
    IMG_3083.jpg
     
    PaulDM and Prodigyplace like this.
  6. PaulDM

    PaulDM Active Member

    Joined:
    Sep 24, 2016
    225
    112
    2
    Location:
    UK
    Vehicle:
    2020 Prius
    Model:
    Excel
    Well done. I have a traffic trick if you want to raise it higher.
     
  7. Fubar XIII

    Fubar XIII New Member

    Joined:
    Aug 29, 2021
    18
    7
    0
    Location:
    Sarasota, Florida
    Vehicle:
    2016 Prius
    Model:
    Two
    While teaching my son to drive yesterday - not his first lesson - he managed 77 mpg over 80+ miles. All on 2-lane out-of-town roads, few stops, 40-50 mph, upper 80s ambient temp, NOT using cruise control.
    That is unheard of for this time of year, in my experience. I've gotten close to that on one tank 4 yrs ago, at night, in Jan with upper 60s and tons of cruise used on 45 mph roads. I had 74 mpg over nearly 300 miles before a highway stint dropped me to 68 for the tank.
    I'm impressed. And proud.
     
    krmcg likes this.
  8. krmcg

    krmcg Lowered Blizzard Pearl Beauty

    Joined:
    May 15, 2008
    2,592
    2,374
    0
    Location:
    Whittier, CA
    Vehicle:
    2016 Prius
    Model:
    Four
    one way or round trip?
     
  9. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    15,454
    8,711
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    If it was in Florida, it doesn't matter much. There isn't enough elevation change in that state to give very much of a one way gravity boost.

    ... However, a one way route that was heavily tail-wind-driven ...
     
    #50 fuzzy1, Sep 6, 2021
    Last edited: Sep 7, 2021
    jerrymildred and krmcg like this.
  10. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    10,248
    12,572
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Exactly. Wind direction and speed are usually much bigger factors here. But the middle of the state is a couple hundred feet higher than the coast, so that can have an impact. Still, it's usually the wind.
     
    krmcg likes this.
  11. Fubar XIII

    Fubar XIII New Member

    Joined:
    Aug 29, 2021
    18
    7
    0
    Location:
    Sarasota, Florida
    Vehicle:
    2016 Prius
    Model:
    Two
    All in Sarasota & Manatee Counties (around Myakka State Park for those curious or in-the-know), driving out from town, with several stops & 3 point turns, on multiple roads before returning to town. So both ways on every road driven on. No wind assist.
     
  12. PaulDM

    PaulDM Active Member

    Joined:
    Sep 24, 2016
    225
    112
    2
    Location:
    UK
    Vehicle:
    2020 Prius
    Model:
    Excel
    Very nice
     
    jerrymildred likes this.
  13. Tande

    Tande Active Member

    Joined:
    Jan 29, 2006
    484
    288
    0
    Location:
    Mich.
    Vehicle:
    2017 Prius
    Model:
    II
    Yes......darn wind (& tire pressure).....ask any SERIOUS bicycle rider! .....;)
     
    jerrymildred likes this.
  14. FuriousPrius

    FuriousPrius New Member

    Joined:
    Aug 29, 2021
    18
    5
    0
    Location:
    Texas
    Vehicle:
    2022 Prius
    Model:
    LE
    how reliable are the MPG readings reported by the trip computer? I'm dubious the MPG reported is fully accurate. I've been meaning to do my own calculation based on the volume of the gas tank, amount of gas, and odometer readings to get an accurate comparison, but I was wondering if anyone has done this already.
     
  15. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    15,454
    8,711
    90
    Location:
    Western Washington
    Vehicle:
    2012 Prius
    Model:
    Three
    The MPG display is a bit optimistic (5-10%), but also varies from car to car, so you'll still want to do the fuel logging and arithmetic for your own circumstances.
     
  16. jerrymildred

    jerrymildred Senior Member

    Joined:
    Oct 28, 2016
    10,248
    12,572
    0
    Location:
    Tampa, FL
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Every tank for years. It's the only way to know your actual mpg.
     
  17. Fubar XIII

    Fubar XIII New Member

    Joined:
    Aug 29, 2021
    18
    7
    0
    Location:
    Sarasota, Florida
    Vehicle:
    2016 Prius
    Model:
    Two
    Mine has been reliable, checked regularly initially, occasionally now. RTE is suspect but mpg is solid for me.
     
Loading...