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Siskiyou Pass performance (6% climb for 7.9 miles)

Discussion in 'Gen 4 Prius Main Forum' started by roadwarrior28, Aug 25, 2016.

  1. roadwarrior28

    roadwarrior28 Member

    Joined:
    Jul 7, 2016
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    Location:
    Portland, OR
    Vehicle:
    2016 Prius
    Model:
    Three Touring
    Yesterday I went up and down the siskiyou pass and was curious to see the performance of the car. This is the highest point on I5 and grueling for cars and trucks alike. Fully loaded Semis do 1MPG (235 L/100km).

    Here was how I drove:
    -DRCC @ 70mph ascending
    -65-75 descending (B mode)
    -A/C on 'LO' temp setting and full fan speed
    -PWR mode

    MPG average at the summit: 20.0 after 7.9 mile climb
    ECO score at the summit: 47/100
    Battery ascending: 3-4 bars

    MPG average after descent: 44.3
    ECO score after descent: 47/100
    Battery after descent: full

    Having driven everything from a BMW 7 series to a Corolla over this pass, I can say I'm very impressed with this performance. I don't think any other production vehicle could get 20 MPG @ 70mph
     
    #1 roadwarrior28, Aug 25, 2016
    bwilson4web, tucatz, 303inthe510 and 4 others like this.
  2. robsnyder20

    robsnyder20 Active Member

    Joined:
    Aug 13, 2012
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    Location:
    SW Florida USA
    Vehicle:
    2016 Prius
    Model:
    Three
    Thanks for sharing the stats. I know when climbing a 5% grade at 45 MPH in the smoky mountains to the highest point (roughly 7 miles, I averaged 21 MPG. I was also impressed how it handled and how B gear held the car speed back pretty well. Question for you roadwarrior, did you get your decent MPG off the computer or off the phone or scangauge?
     
    #2 robsnyder20, Jul 14, 2017
  3. eustachio

    eustachio Member

    Joined:
    Jun 17, 2017
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    Location:
    CA
    Vehicle:
    Other Non-Hybrid
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    N/A
    Any idea of the MPG just for the descent?

    Also, going uphill, how easily did the Prius accelerate back up to cruising speed if DRCC caused you to slow at any point?
     
    #3 eustachio, Jul 14, 2017
  4. robsnyder20

    robsnyder20 Active Member

    Joined:
    Aug 13, 2012
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    Location:
    SW Florida USA
    Vehicle:
    2016 Prius
    Model:
    Three
    My decent was maxed at 199.9 MPG but it differed using torque with a obd2 adapter, saying roughly 45 - 50 MPG. I went downhill for the most part for 21 miles from the peak and my trip odo still read at 199.9. Pic is my profile pic to the left.
     
    #4 robsnyder20, Jul 14, 2017
    eustachio likes this.
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