Welcome to Our Community

Wanting to join the rest of our members? Feel free to sign up today.

Sign Up

This is what happens when you drive downhill...

Discussion in 'Gen III 2010+ Prius Main Forum' started by pakitt, Apr 21, 2011.

Social Buttons

  1. pakitt

    pakitt Active Member

    Joined:
    Aug 10, 2009
    Messages:
    1,098
    Likes Received:
    233
    Location:
    Munich, Germany
    Your Vehicle Year:
    2010 Prius
    Model:
    N/A
    Attached a pic I took from the MFD after going a very steep and *long* downhill in Austria the other day.
    I have never seen *6* 50wh cars since owning the Prius...
    The "descent" is between Seefeld and Zirl in Austria.

    Attached Files:

  2. billnchristy

    billnchristy Active Member

    Joined:
    Jul 18, 2009
    Messages:
    890
    Likes Received:
    95
    Location:
    GA
    Your Vehicle Year:
    2010 Prius
    Model:
    III
    I use B when going down hill and don't regen much at all, nor do I use any gas...in fact climbing and descending a mountain usually nets near 0.
  3. mikewithaprius

    mikewithaprius New Member

    Joined:
    Jan 5, 2011
    Messages:
    656
    Likes Received:
    100
    Location:
    Rhode Island
    Your Vehicle Year:
    2007 Prius
    Model:
    N/A
    That's crazy, Pakitt! You were easily fully charged for the next uphill I guess...
  4. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    Messages:
    4,394
    Likes Received:
    768
    Location:
    Greater Vancouver, BC, Canada
    Your Vehicle Year:
    2010 Prius
    We've filled the tank at a station that happens to be at the start of a long downhill drop. Resetting the trip meter at that station can result in some insanely good mileage by the time we reach the bottom, a real ego boost, LOL.
  5. 2k1Toaster

    2k1Toaster HID Guru

    Joined:
    Feb 14, 2010
    Messages:
    3,897
    Likes Received:
    1,145
    Location:
    Rocky Mountains
    Your Vehicle Year:
    2006 Prius
    Model:
    Three
    I live on a mountain so that happens everyday as I descend down into town, and then I get 8mpg to 18mpg on the long climb back up.
  6. pakitt

    pakitt Active Member

    Joined:
    Aug 10, 2009
    Messages:
    1,098
    Likes Received:
    233
    Location:
    Munich, Germany
    Your Vehicle Year:
    2010 Prius
    Model:
    N/A


    I used B....
  7. REV-X

    REV-X New Member

    Joined:
    Apr 25, 2011
    Messages:
    8
    Likes Received:
    0
    Location:
    Fredericksburg, Va
    Your Vehicle Year:
    Other Non-Hybrid
    Model:
    N/A


    Holy crap that sucks!
  8. 2k1Toaster

    2k1Toaster HID Guru

    Joined:
    Feb 14, 2010
    Messages:
    3,897
    Likes Received:
    1,145
    Location:
    Rocky Mountains
    Your Vehicle Year:
    2006 Prius
    Model:
    Three


    Yeah but it sucks a lot less than anything else.

    The RX gets single digits and gains nothing on the way down. The RX hybrid gain a bit on the way down, but again single digits on the way up.

    And by mountain I mean mountain. Steep steep grades, twisty road. The old VW love bug doesn't have enough power to get up the hill even at slow speeds.
  9. pasindusperera

    pasindusperera New Member

    Joined:
    Sep 16, 2012
    Messages:
    3
    Likes Received:
    0
    Location:
    Colombo, Sri Lanka
    Your Vehicle Year:
    2010 Prius
    Model:
    Five
    driving down hill.. last time there were 3 bars like that
  10. Sergio-PL

    Sergio-PL Member

    Joined:
    Jun 24, 2011
    Messages:
    159
    Likes Received:
    40
    Location:
    Poland
    Your Vehicle Year:
    2011 Prius
    Model:
    N/A


    Welcome on board. I just wanted to start similar thread after visiting Italy... very step hill, B-mode.
    I have seen this pic on the road at least 10 times within a week, and at least 3 times in a row on the one road in Tuscany.

    B-mode is interesting. It starts engine but below 50 kmh it barerly runs until battery get topped (topped = 8 bars for longer period of time). After that it starts revving up engine very high. After that ECU does everything possible to get rid of the 8th bar. On the flat road or uphill ICE didn't start until either battery lowered to 7 bars or HSI went to PWR zone. It was very enjoyable drive with EV mode off, 8 bars and going uphill with 2/3 of the HSI hybrid zone and engine off.

    I had also a 10 to 15 minutes trip going 60 kmh (sligh downhill + flat, suburban areas) with ICE off, running only from 8 bars of battery. I liked it. Despite of 27 - 30 degrees Celsius outside battery fan didn't run at enormous speeds. I was able to hear it but it wasn't much louder than A/C running at 2 bars speed.

    On the other day driving from Brenner to Innsbruck down with B-mode I have filled battery and then I was running with 0 l/100km at 100kmh for some time (until 8th bar didn't gone), even uphill.

    prius-downhill.jpg
Similar Threads: happens drive
Forum Title Date
Gen III 2010+ Prius Fuel Economy What happens when your other half drives the Prius (MPG) Sep 29, 2012
Gen III 2010+ Prius Fuel Economy What happens to me when I drive the Prius "normally" Feb 8, 2011
Gen III 2010+ Prius Technical Discussion Something happens when I open the driver door Jul 20, 2009
Gen II Prius Technical Discussion What happens if you push the "park" button while the prius is in drive and in motion? Feb 3, 2009
Gen II Prius Technical Discussion What happens if the P button is pushed while in motion/B drive? Aug 17, 2007