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September Fuel Economy Stats

Discussion in 'Gen 3 Prius Fuel Economy' started by Tideland Prius, Sep 1, 2010.

  1. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
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    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Format

    Date: xx September 20xx
    Total Dist: km / mi
    Tank Dist: km / mi
    MFD: L/100km or mpg US
    Calc'd: L/100km or mpg US
    Fuel Added: litres or US gal
    Average Speed: km/h or mph

    Remarks:
     
  2. Dan bo

    Dan bo Prius Fan

    Joined:
    Apr 17, 2010
    116
    34
    28
    Location:
    Canada, London
    Vehicle:
    2010 Prius
    Model:
    N/A
    Date: 06 September 2010
    Total Dist: 15498km / 9630mi
    Tank Dist: 861km / 535mi
    MFD: 3.8L/100km or 61.89mpg US
    Calc'd: 4.02L/100km or 58.51mpg US 5.79% diff
    Fuel Added: 34.64litres or 9.15US gal
    Average Speed: 44km/h or 27mph

    Remarks: I wish the MFD was to 100th instead of only 10th as there is about a 2mpg (US) between 3.80 and 3.89, however ..not a big deal.
     
  3. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
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    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Date: 11 September 20xx
    Total Dist: 18788 km / 11742.5 mi
    Tank Dist: 787.3 km / 492.1 mi
    MFD: 4.2L/100km or 56.0 mpg US
    Calc'd: 4.65L/100km or 50.6 mpg US
    Fuel Added: 36.598litres or 9.97 US gal
    Average Speed: 33km/h or 21mph

    Remarks: None
     
  4. Dan bo

    Dan bo Prius Fan

    Joined:
    Apr 17, 2010
    116
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    Location:
    Canada, London
    Vehicle:
    2010 Prius
    Model:
    N/A
    Date: 15 September 2010
    Total Dist: 16519km / 10264mi
    Tank Dist: 1021km / 634mi ## New record ##
    MFD: 3.8L/100km or 61.89mpg US
    Calc'd: 4.04L/100km or 58.22mpg US 6.32% diff
    Fuel Added: 41.26litres or 10.9US gal
    Average Speed: 41km/h or 26mph


    Remarks: 4 tires @ 40 psi (15inch) , 98% eco and AC on auto , mostly in town with a few short runs out of town. I have been running the next tank in PWR mode just for fun to see what type of mileage I get. Will also start filling up at 2 bars for a while, wife's orders ...LOL :redface:
     
  5. Michaelvickdog123

    Michaelvickdog123 New Member

    Joined:
    Aug 3, 2010
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    Location:
    US
    Vehicle:
    2010 Prius
    Model:
    IV

    I would be interested to know - when people quote their refill gallons, are you filling it until it clicks off, or, is the refill amount topped off? I routinely can add another 0.5 gallons of gas after it clicks off, but one poster (on the main Prius folder) said he usually can add 2-3 gallons after the pump "clicks off".

    My question goes to...if we don't believe the computer readout/MPGs, then how accurate is the amount of gas consumed...if we base that amount on an inaccurate measure of how much gas we put back into the tank at each fillup. Seems to me, that can vary with pump and methodology. We seem to assume that the amount we refill, is equal to the amount consumed. Without careful meaurments, I'm not sure that assumption is always valid.
     
  6. alfon

    alfon Senior Member

    Joined:
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    Location:
    seaside, oregon
    Vehicle:
    2010 Prius
    Model:
    III
    Aug 30, 2010 thru Sept 20, 2010

    Miles: 2,592.1

    Gal's: 49.896

    Actual MPG: 51.950

    I reset trip B after every fill up, but my computer mpg is fairly consistently optomistic with being off 2.5 to 3.5 mpg

    It just seems that short fillups say uner 150 miles are more consistently accurate with the computer than say 400-500 mile trips.
    Just my opinion.

    alfon
     
  7. Dan bo

    Dan bo Prius Fan

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    Vehicle:
    2010 Prius
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    N/A
    Valide Points Michael

    I always stop filling once the pump clicks off the first time (I slow the rate down once I get close to where I think it will click off) Also I "TRY" and fill up at the same pump if possible, last 4 or 5 tanks have been same station and pump.

    It may be worth adding that I'm using 87 octane with no ethanol.

    Dan
     
  8. Dan bo

    Dan bo Prius Fan

    Joined:
    Apr 17, 2010
    116
    34
    28
    Location:
    Canada, London
    Vehicle:
    2010 Prius
    Model:
    N/A
    Date: 27 September 2010
    Total Dist: 17,353km / 10783mi
    Tank Dist: 834km / 518mi
    MFD: 3.8L/100km or 61.89mpg US
    Calc'd: 4.07L/100km or 57.79mpg US 7.11% diff
    Fuel Added: 33.98litres or 8.98US gal
    Average Speed: 41km/h or 26mph


    Remarks: All in PWR mode, 4 tires @ 40 psi (15inch) , and AC on auto , mostly in town with a few short runs out of town. Same pump for last 6 fill-ups and using non-ethonal gas 87 oct.

    Not much of a difference in gas using pwr mode, but certainly a huge difference in the "feel" of the car.
     
  9. tickmark40

    tickmark40 New Member

    Joined:
    May 5, 2010
    62
    1
    3
    Location:
    Brownwood, TX
    Vehicle:
    2010 Prius
    Model:
    IV
    Date:3 September 2010
    Total Dist: km /3225.3
    Tank Dist: km /382.3
    MFD: L/100km or 52.2 mpg US
    Calc'd: L/100km or 50.039 mpg US
    Fuel Added: litres or 7.64 US gal
    Average Speed: km/h or 28 mph

    Date: 10 September 2010
    Total Dist: km /3631.2 mi
    Tank Dist: km / 405.7 mi
    MFD: L/100km or 49.8 mpg US
    Calc'd: L/100km or 47.57 mpg US
    Fuel Added: litres or 8.53 US gal
    Average Speed: km/h or 57 mph

    Climbing altitude and strong cross winds

    Date: 11 September 2010
    Total Dist: km /3952.0 mi
    Tank Dist: km /320.8 mi
    MFD: L/100km or 48.1 mpg US
    Calc'd: L/100km or 46.91 mpg US
    Fuel Added: litres or 6.839 US gal
    Average Speed: km/h or 61 mph

    Climbing Altitude and strong winds from cold front

    Date:17 September 2010
    Total Dist: km /4328.3 mi
    Tank Dist: km / 376.3 mi
    MFD: L/100km or 57.6 mpg US
    Calc'd: L/100km or 54.48 mpg US
    Fuel Added: litres or 6.907 US gal
    Average Speed: km/h or 64 mph

    In the Rocky Mountains

    Date: 18 September 2010
    Total Dist: km / 4771.3 mi
    Tank Dist: km / 443.0 mi
    MFD: L/100km or 53.1 mpg US
    Calc'd: L/100km or 51.05 mpg US
    Fuel Added: litres or 8.679 US gal
    Average Speed: km/h or 65 mph

    Coming back down from the mountains...
    Wonderful trip, Pearl ran up and down the mountains like they were flat land! :cheer2:
     
  10. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
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    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Date: 27th August - 8th September 2011
    Total Dist: 33,973km / 21,233mi
    Tank Dist: 300.3 km / 187.7 mi
    MFD: 4.3L/100km or 55.0mpg US
    Calc'd: 4.46L/100km or 55.74mpg US
    Fuel Added: 13.397 litres or 3.539 US gal
    Average Speed: 33km/h or 21mph

    Remarks: None