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

Cold weather & bad mpg's - post your worst!

Discussion in 'Prius c Main Forum' started by dubit, Nov 10, 2018.

  1. dubit

    dubit Senior Member

    Joined:
    Dec 3, 2016
    850
    538
    23
    Location:
    Indiana
    Vehicle:
    2016 Prius c
    Model:
    Two
    Well the cold weather is upon us. Got up this morning to 22 degrees and it's been pretty cold in the mornings for awhile now. Got one of my worst mpg's this evening on my most recent fill-up. :(

    48 mpg - absolutely horrible. Thankfully gas is only running $2.25 per gallon (15% ethanol) Regular 10% running [email protected]
     
    michael.sfo and bisco like this.
  2. HiC

    HiC Junior Member

    Joined:
    Aug 26, 2014
    21
    16
    0
    Location:
    Northern, MN
    Vehicle:
    2014 Prius c
    Model:
    Two
    Not the worst, but only one I have photo of. Worst is around 30 mpg in -35F temps.
     

    Attached Files:

  3. dubit

    dubit Senior Member

    Joined:
    Dec 3, 2016
    850
    538
    23
    Location:
    Indiana
    Vehicle:
    2016 Prius c
    Model:
    Two
    New "worst" of 46.1 mpg, which is approaching old Yaris' summer avg of 43 or so. Gas @ $2.13 around here. .
     
  4. skayaks

    skayaks Active Member

    Joined:
    May 30, 2012
    123
    106
    0
    Location:
    Massachusetts
    Vehicle:
    2013 Prius c
    Model:
    Two
    My worst tank was 46.5 mpg when the car was quite new and temps were in the 20s (F). Entire tank was used for an Interstate trip to Vermont and back. I've taken much colder trips to VT but haven't beaten that number yet.
     
    michael.sfo likes this.
  5. priustexasbob

    priustexasbob Member

    Joined:
    Sep 3, 2010
    356
    86
    0
    Location:
    arrakis
    Vehicle:
    2015 Prius c
    Model:
    Two
    worst is kinda subjective, here is mine, all same route/speed, distance 7.8 miles
    spring/fall - no ac, no heater 58-62 mpg
    summer - no ac in morning 55-59 mpg, ac in afternoon 47-49 mpg (only to keep battery cool)
    winter - morning temps 30-42°F heater on for most of trip (SE Texas and I'm a wuss when it comes to cold), especially in morning 44-46 mpg
     
  6. ztanos

    ztanos All-around Geek!

    Joined:
    Jan 10, 2013
    3,339
    1,149
    40
    Location:
    Cumming, Georgia
    Vehicle:
    2012 Prius c
    Model:
    Four
    My worst was 35.77, but I sat in Kentucky, on the highway, not moving... for 9 hours, in -1 degree weather. Blizzard of March 2015.

    Seat heaters and 75 degrees while watching netflix. Car was toasty warm and comfortable. :D As an aside, 9 hours of idle under those conditions only used 1.5 blips on the gas gauge, lol. Not how I wanted to find out.
     
  7. rosethornil

    rosethornil Member

    Joined:
    Apr 24, 2012
    47
    30
    0
    Location:
    Virginia
    Vehicle:
    2016 Prius c
    Model:
    One
    Here in Suffolk, Virginia, we had a low of 33 and my mileage fell to 47 mpg for a short trip (less than 8 miles). Still, all things considered, that's not to shabby. And I do keep my little C-Biscuit in an attached garage.
     
    ztanos and dubit like this.
  8. MichaelJai

    MichaelJai Junior Member

    Joined:
    Dec 1, 2017
    10
    6
    0
    Location:
    toronto
    Vehicle:
    2017 Prius c
    Model:
    Touring
    So far the worst is about 5.3L/100k or 44Mpg in Canada for me.
    Summer/Fall is around 55 Mpg
    The climate control is in Auto all the time
    Just block whole lower grille today. Hopefully will get slightly better gas mileage. Will update the result in the future.
     
    dubit likes this.
  9. dubit

    dubit Senior Member

    Joined:
    Dec 3, 2016
    850
    538
    23
    Location:
    Indiana
    Vehicle:
    2016 Prius c
    Model:
    Two
    Just got my all time worst - 39.2 mpg

    single digit temps, warm ups on those cold mornings, driving with the temperature set to HI. Yeah, the ICE never seems to shut off when that's set to HI. Was expecting a "hit", but WOW!
     
  10. ztanos

    ztanos All-around Geek!

    Joined:
    Jan 10, 2013
    3,339
    1,149
    40
    Location:
    Cumming, Georgia
    Vehicle:
    2012 Prius c
    Model:
    Four
    You should try AUTO in the summer time.. that thing blows fierce and forever... My mpg's take a super hit when I try that.
     
  11. joelg1988

    joelg1988 Junior Member

    Joined:
    Dec 3, 2018
    34
    32
    0
    Location:
    Las Vegas, NV
    Vehicle:
    2018 Prius c
    Model:
    Two
    I live 5 miles away from work, so for me in the "cold" season here in Vegas (46 degree mornings) I average 39 mpg with the heater off. My high in a "cold" morning is 46 mpg.
     
  12. pdforever

    pdforever Member

    Joined:
    Jan 25, 2019
    37
    73
    0
    Location:
    Pakistan
    Vehicle:
    2015 Aqua
    Model:
    N/A
    Oh man, you really shouldn't leave it wide open like that! Minimum distance, dude, minimum distance...

    My morning commute is 20 km (12 miles), which takes anywhere from 30 minutes to 45 minutes.

    It was raining last week, so the traffic was awful. Folks will drive slower, but they won't drive any better, so you'll still have a bunch of gear-knobs trying to cut in if you aren't tail-gating the guy ahead of you. It took me nearly an hour to get to office. Temperature wasn't bad, maybe 5 C (40 F), but I did have to turn on the defoggers from time to time.

    My mileage at the end of the commute was about 18 km/l, which is 42 mpg (US). Which is a lot better than what we get with the other cars on good days, so I can't imagine what I'm complaining about.
     
  13. MichaelJai

    MichaelJai Junior Member

    Joined:
    Dec 1, 2017
    10
    6
    0
    Location:
    toronto
    Vehicle:
    2017 Prius c
    Model:
    Touring
    :(MPG is dropping like crazy. -4F OR -20C at the moment and ICE won't shut off most of the time because of the low water temp. This tank might get low 30 MPG.
     
  14. joelg1988

    joelg1988 Junior Member

    Joined:
    Dec 3, 2018
    34
    32
    0
    Location:
    Las Vegas, NV
    Vehicle:
    2018 Prius c
    Model:
    Two
    I forgot to mention, mine varies a lot because I live by the west mountains of Las Vegas, so going to work I'm going downhill pretty much the entire time, so I can get anywhere from 55 to 75 mpg (depending on the traffic). Now going back home is a different story since I'm going uphill the entire time and the ICE pretty much won't shut off. I get from 31 to 37 mpg (again, depending on traffic).