My first highway trip: 4.9L/100 km

Discussion in 'Gen 2 Prius Fuel Economy' started by navguy12, Feb 20, 2012.

  1. navguy12

    navguy12 Member

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    My first highway trip experience:

    620 kms
    Home (Eastern Ontario) to west of Toronto then to Guelph then back to home.

    Westbound: headwinds all the way, temp -1C
    Some city driving at destination
    Eastbound: crosswinds to tailwinds, temp +3C

    100 kph with cruise control; new winter tires on 15 inch rims (delta between speedometer and GPS was 1 kph)

    ScanGauge and home spreadsheet results for tank-full: 4.9L/100 kms
    Computer readout on dash result: 4.6L/100 kms

    Cheers

    Mike
     
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  2. navguy12

    navguy12 Member

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    My second highway trip experience:

    204 kms

    Home to "North of Hwy 7" (Canadian Shield territory) and return.

    Wind: negligible. Temp: -10C

    Loop route was secondary highways at 90 kph with about 10% at 60 kph driving thru small towns.

    ScanGauge results: 4.8L/100 km (49 USMPG)
    MFD result: 4.5L/100 km (52.27 USMPG)

    Cheers

    Mike
     
  3. F8L

    F8L Protecting Habitat & AG Lands

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    You're gonna have so much fun when temps warm up and fuel blend changes. :)
     
  4. navguy12

    navguy12 Member

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    I can hardly wait :D!!!!
     
  5. Red09

    Red09 Junior Member

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    Enough of snow and cold, I am ready to try hypermileing on some warm dry roads.
     
  6. Bojan Lalic

    Bojan Lalic New Member

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    1. Not only the higher temperatures will give you better mileage, but also the increased experience with the highway driving techniques.
     
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  7. Tideland Prius

    Tideland Prius Moderator of the North
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    Wow, that's impressive! (on a Gen 2 too!) Drop it to 90 and it'll be closer to 4.6-4.7 and 80 down to 4.4-4.5L/100km (though I've seen as low as 4.0L/100km on the instant FE gauge at 80km/h).
     
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  8. navguy12

    navguy12 Member

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    The best I could squeeze out of my '07 HCH (back in Aug 2008) was 4.26L/100 km (1043.2 km and 44.423L to top-off), so I hope to do at least as well as that this summer in my Prius
     
  9. Tideland Prius

    Tideland Prius Moderator of the North
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    It'll be a bit tougher with the Gen 2 Prius because of the rubber bladder inside the fuel tank but it should be doable (my tank record is 902km on 38 or 40 litres.. i'll have to check my spreadsheet)
     
  10. navguy12

    navguy12 Member

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    Agree 100%. I've 'filled up' three times and the most I put in before the 'click' of the pump shut-off was 31.68L (with one 'pip' showing)

    :eek:WOW, something to aim for!
     
  11. Tideland Prius

    Tideland Prius Moderator of the North
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    lol. I didn't think my record was that impressive especially since others have hit 1,000km or more (see the 600 miles and 700 miles thread). I'm aiming for 1,000km on my Gen 3 (currently sitting at 955km from last year which was actually mostly highway, believe it or not. My all-city record is 950km so pretty close)
     
  12. sidecar

    sidecar Member

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    best so far. I have made trips 50km or more for 3.6 L/100KM, but then I have to get home :). Average is more like 4.3
    [​IMG]
     
  13. Tideland Prius

    Tideland Prius Moderator of the North
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  14. navguy12

    navguy12 Member

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    What Tideland said!!!!!

    My current MFD reading is 4.6L/100 km with about 630 km on the trip.....I think I'll take a picture next time and post it.......
     
  15. Red09

    Red09 Junior Member

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    I wish I could see those figures on my display, especially the the outside temp of 17.
     
  16. uart

    uart Senior Member

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    Here's my current best tank. In hindsight I wish I had driven an extra few km to make it tick over to 1100 km. I re-fueled right at the top of a big hill (350 ft elevation), so I could easily have driven further as the next 5k would all have been downhill.
     

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  17. navguy12

    navguy12 Member

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    Here is my MFD from today:
     

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  18. navguy12

    navguy12 Member

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    I filled up today, to the first fuel pump cut-off click.

    Temp today (for effect on fuel cell bladder comparison) is -3C.
    Last fill-up temp was +1.3C.

    693.7 km's traveled since last fill-up.

    Spreadsheet method: 4.37L/100 km
    MFD: 4.6L/100 km
    ScanGauge: 5.0L/100 km

    My guess, about 4.6 to 4.7........I need more temp/fill-up data points to get a handle on things.

    Big picture: 2252 km's traveled since purchase; 108.080 liters to current 'top-up'; 4.799L/100 km's (49.013 USMPG)

    Cheers

    Mike
     
  19. Tideland Prius

    Tideland Prius Moderator of the North
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    The bladder is annoying. After driving 50km or so on the low fuel light, temps near +5°C for daytime highs, the fuel pump cut off at 29 litres!!
     
  20. navguy12

    navguy12 Member

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    nuts!
     
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