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

Most recent tank

Discussion in 'Gen 3 Prius Fuel Economy' started by wesayso, Jun 2, 2011.

  1. JimboPalmer

    JimboPalmer Tsar of all the Rushers

    Joined:
    Apr 14, 2009
    12,470
    6,862
    2
    Location:
    Greenwood MS USA
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Honestly, I have never owned a tank. I tend to buy very small cars.
     
  2. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    524.3 miles
    10.11 gallons
    $3.199/gallon
    $32.34 total
    51.86 calculated mpg
    54.6 computer mpg on tank.
    $0.0616/mile
     
  3. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    522.2 miles
    10.057 gallons
    $3.159/gallon
    $31.77 total
    51.9 calculated mpg
    54.0 computer mpg on tank.
    $0.0608/mile
     
  4. markderail

    markderail I do 45 mins @ 3200 PSI

    Joined:
    Sep 13, 2006
    2,260
    162
    18
    Location:
    Pierrefonds (Montreal) Quebec Canada
    Vehicle:
    2010 Prius
    Model:
    N/A
    2450 PSI with a steel 100, at depth of 55' for about 52 minutes.
    With a previous Al-80 was lasting less than 40 mins. Both dives in Maui.

    Yes, on www.ScubaBoard.com I post my Prius mpg.

    Just to keep things in perspective.
     
  5. yyyiiikes

    yyyiiikes Junior Member

    Joined:
    May 11, 2007
    84
    15
    0
    Location:
    Austin, TX
    Vehicle:
    2011 Prius
    Model:
    Three
    First tank of gas:

    Calculated: 46.6 MPG (448 mi with 9.6 gal) that assumes the tank was topped off by the dealer.

    ECU: 51.0 estimated

    Really nice going 2.5 weeks without stopping for gas.
     
  6. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    545.3 miles
    11.41 gallons
    $3.249/gallon
    $37.04 total
    47.79 calculated mpg
    50.5 computer mpg on tank.
    $0.0679/mile
     
  7. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    508.2 miles
    10.113 gallons
    $3.099/gallon
    $31.40 total
    50.25 calculated mpg
    53.0 computer mpg on tank.
    $0.0617/mile
     
  8. djlen

    djlen Junior Member

    Joined:
    Nov 18, 2011
    68
    3
    0
    Location:
    Somerdale, NJ
    Vehicle:
    2011 Prius
    Model:
    Two
    Ok, now I'm seeing probably the main reason why I'm getting lower mileage than some of you guys. Your trips are much longer than mine. I'm only driving 7 miles to work and 7 back. With the colder weather coming on I'm seeing that affect my mileage even more. Just did my first fill up since delivery (dealer said the tank was topped off) and got 48.0 on the computer and 44.30 calculated. We'll see if that changes much between today's fill up and the next one.:cheer2:
     
  9. cycledrum

    cycledrum PSOCSOASP

    Joined:
    Apr 9, 2008
    8,245
    1,202
    0
    Location:
    NorCal
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I think 11.4 gallons refill is running tank too low. If fuel pump doesn't get fuel, doesn't it suck air which can damage, if someone can verify? When mine hits 1 pip, it's refill time.
    On that note, the owner's manual seems to be missing a section that explains the last pip will blink.
     
  10. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    Well, I was having a "Kramer" moment. :D
     
  11. walter Lee

    walter Lee Hypermiling Padawan

    Joined:
    Oct 26, 2009
    1,126
    376
    5
    Location:
    Maryland
    Vehicle:
    2010 Prius
    Model:
    III

    0. The Problem/Challenge
    - MPG drops for short trips & in the cold.
    =================================================
    With a commute less than 10 miles in the winter ( temperature
    less than 40F for most of the trip), under normal stop and go
    traffic ( non highway) the Prius ICE may have difficulty reaching
    its optimal operating temperature because the ICE is
    regularly being turned off and on. In addition, the HV batteries
    are less efficient in the cold. If your Prius is switching back and
    forth between electric and gas power - it may take about
    6 to 8 minutes for the engine get over 130 F and up to 40
    minutes to get over 170 F - that's bad news for fuel efficiency.

    Initially, the Prius aggressively warms up to heat up
    the catalytic converter to get its ultra low emissions levels.
    The Prius thus has a higher warmup cost than other
    vehicles with dirtier emission levels SO to still get good fuel
    efficiency that warmup cost has to be spread out across the
    entire trip (the longer the trip the less impact the initial
    fuel cost becomes). The Ford Fusion Hybrid's behaves in
    a similar fashion as well - with its MPG improving even more
    dramatically as it is driven over 10 miles/40
    minutes.


    I. The hypermiling solution (warmup/mini P&G cycles)
    ========================================
    ... is to use mainly gasoline power during the first three
    to six minutes (avoiding using electrical power
    as much as you can) increasing your speed if necessary
    with each mini burst of acceleration via the ICE. This
    promotes the warming-up of the engine. Once the ICE
    is warmed up to its optimum temperature - a hypermiler
    driver relies on other standard hypermiling tricks like
    P&G cycle to raise the MPGs back up. This technique
    works best if you have a temperature gauge.

    II. The engineering solution
    =======================================
    .... is to install a 400W engine block heater (EBH)
    and warm up your Prius before you drive it. Warming
    up the Prius ICE to even 100F will shorten the
    time the Prius ICE gets to its most optimum operating
    temperature and push up fuel efficiency(FE) significantly.
    The down side is you must use electricity to warmup
    your Prius and it takes 30minutes to 2 hours prep time.
    However, combined with other hypermiling techniques,
    a warmed up engine can produce steller MPG results.

    III. grill blocking +temperature gauge solution
    =====================================
    .... is to block the lower air intake grills of the
    2010 Prius (e.g. with pipe foam insulation) to help
    the engine warm up faster and monitor the temperature
    with a temperature gauge (e.g. ScangaugeII xgauge-FWT)
    to make sure your engine doesn't over heat.

    IV. The trip planner solution
    =====================
    is to plan and accomplish several small trips sequentially
    within a few minutes of each other so that each
    successive trip benefits from having a warmed up
    engine created by a previous trip with the first trip
    being the longest trip.

    hope this helps

    Walter Lee
    2010 Toyota Prius III Blue Ribbon/Dk Grey, Oem floormats
    Yokohama Avid S33 (50/48)
    ScangaugeII (FWT,SoC, RPM, GPH)
    50% grill blocking (100% lower, 0% upper)
    Odeometer = 17400 miles, overall 60.9 mpg
     
    1 person likes this.
  12. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    488.1 miles
    9.699 gallons
    $3.079/gallon
    $29.88 total
    50.32 calculated mpg
    53.2 computer mpg on tank.
    $0.0612/mile
     
  13. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    439.8 miles
    9.083 gallons
    $3.129/gallon
    $28.42 total
    48.42 calculated mpg
    51.5 computer mpg on tank.
    $0.0646/mile
     
  14. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    325.7 miles
    6.768 gallons
    $2.979/gallon
    $20.16 total
    48.12 calculated mpg
    50.8 computer mpg on tank.
    $0.0618/mile
     
  15. AEROENGR

    AEROENGR Junior Member

    Joined:
    Apr 16, 2011
    57
    19
    2
    Location:
    Connecticut
    Vehicle:
    2011 Prius
    Model:
    Two
    2011 Prius
    508.0 miles
    9.001 gallons
    $3.599/gallon
    $32.39 total
    56.44 calculated mpg
    58.7 computer mpg on tank
    $0.0638/mile
    36 miles to empty indicated
     
  16. Phil_R

    Phil_R Scofflaw

    Joined:
    Nov 26, 2011
    8
    1
    4
    Location:
    Live Oak, FL
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    470.1 miles
    8.44 gallons
    $3.329 gallon
    $28.11 total
    55.7 MPG calculated
    58.9 MPG computer
    $0.06 mile
     
  17. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    425.2 miles
    9.129gallons
    $3.159/gallon
    $28.84 total
    46.57 calculated mpg
    49.4 computer mpg on tank.
    $0.0678/mile
     
  18. badbob47

    badbob47 New Member

    Joined:
    Oct 10, 2011
    19
    0
    0
    Location:
    Hawaii
    Vehicle:
    2011 Prius
    Model:
    Two
    336.8 miles
    5.876 gals at fill up
    $24.79 total @ $4.219/ gal
    57.31 calculated MPG
    59.3 computer MPG on tank

    Note: Last 4 fillups have all been in the 57 MPG calculated MPG range. I've had the car since late August. It now has around 4200 miles on the odometer. I have never gotten less that 53 MPG calculated. It seems that as the car has broken in with mileage, the gas mileage has steadily climbed.
     
  19. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    416.3 miles
    9.137 gallons
    $3.259/gallon
    $29.78 total
    45.56 calculated mpg
    47.9 computer mpg on tank.
    $0.0715/mile
     
  20. wesayso

    wesayso Member

    Joined:
    Mar 18, 2011
    385
    35
    0
    Location:
    Hampton, VA
    Vehicle:
    2011 Prius
    Model:
    Two
    496.1 miles
    10.369 gallons
    $3.299/gallon
    $34.21 total
    47.84 calculated mpg
    50.6 computer mpg on tank.
    $0.0689/mile