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First 600 Mile Tank, 55 MPG

Discussion in 'Gen 2 Prius Fuel Economy' started by 09Prius2, Oct 10, 2016.

  1. 09Prius2

    09Prius2 Member

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    620 miles actually, with 1.5 gallons to spare. Could have made 700 miles, but had no way of knowing how much was actually left without adding fuel. Averaged 55 mpg with no A/C use which is my highest recorded so far. This was mostly at medium speed without excess accessory use or speed which I've learned is the mpg killer.

    On the tank afterwards, it went right back to 45 mpg, high speed freeway sucks it all right back. 35-55 mph really seems to be the sweet spot.
     
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  2. eman08

    eman08 Active Member

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    I get consistently get near 60 MPGs on every 6 gallon fill up as I average around 57-58 MPGs calculated by hand around 345-351 miles. I always fill up at the two bar mark and put 6 gallons in each time. That's including mostly city driving and Hwy driving. I get 50 MPGs all highway driving.
     
    #2 eman08, Oct 10, 2016
    Last edited: Oct 10, 2016
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  3. bisco

    bisco cookie crumbler

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    well done o/p, congrats!(y)
     
  4. 09Prius2

    09Prius2 Member

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    What is your max cruising speed? I can get 50-60 mpg tailing semis, but they rarely exceed 70 and the rest of traffic goes faster. Going long distances at 80 mph or more takes about 20% off the optimal mpg.
     
  5. eman08

    eman08 Active Member

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    55-60 MPH some times 65 and 70.

    Posted via the PriusChat mobile app.
     
  6. Mendel Leisk

    Mendel Leisk Senior Member

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    Post #2 sums up my approach: try your best for good mpg, but fugedabout stretching tanks.
     
  7. 09Prius2

    09Prius2 Member

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    Well yeah I can get that kind of mileage driving at those speeds. Its just not feasible to drive that slow over long distances, when a 10 or 20 mph difference saves hours of travel time.
     
  8. eman08

    eman08 Active Member

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    Those are speed limits. Where I live at, we have very few speed post that are 70 MPH mostly 50-65.