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

2006 vs 2008 coasting

Discussion in 'Gen 2 Prius Main Forum' started by doogster, Jul 6, 2012.

  1. doogster

    doogster Junior Member

    Joined:
    Mar 12, 2012
    65
    1
    0
    Location:
    NJ
    Vehicle:
    2008 Prius
    Model:
    II
    Hi. I bought my 1st 2008 Prius in Feb 2012. The first thing I really noticed was the "drag" (for lack of a better word) when coasting up to a light... no brake applied... no gas applied.... just... rolling. I noticed my 2008 would not roll as far as I was used to on a standard car. I assumed that was because of some sort of regeneration.

    Now... last week I bought another used Prius... a 2006. To my surprise, the 2006 seems to roll much further than the 2008!!! Almost like a regular car!

    So... what am I looking at here?
     
    #1 doogster, Jul 6, 2012
  2. Britprius

    Britprius Senior Member

    Joined:
    Jun 14, 2010
    5,194
    1,917
    0
    Location:
    Herefordshire England
    Vehicle:
    2008 Prius
    Are the tyres the same make, type, and size as well as pressures. The other big difference to rolling resistance is wheel alignment front and rear. If tyres are different types please list tyers fitted.

    Brake binding will also cause the effect. Jack up the car and see if there is drag on any of the wheels. If the drag is that noticeable I would expect the 2006 to get better MPG's than the 2008.
     
    #2 Britprius, Jul 6, 2012
  3. doogster

    doogster Junior Member

    Joined:
    Mar 12, 2012
    65
    1
    0
    Location:
    NJ
    Vehicle:
    2008 Prius
    Model:
    II
    Not sure about the tire types... I'll check it out and post back later...

    I will say the 2006 is showing 55.3MPG on the display while the 2008 with more drag is getting only 51.5MPG
     
    #3 doogster, Jul 6, 2012
  4. uart

    uart Senior Member

    Joined:
    Sep 7, 2009
    4,215
    1,201
    0
    Location:
    Australia
    Vehicle:
    2005 Prius
    Typically that's how my Prius feels in "B" mode. Any chance that there's some issue with the 2008 shifter and you're running it in "B" mode instead of "D". I'm sure you would have noticed so if this was the case.

    Just for comparison though, try running your 2006 in "B" mode and see how the feel compares.
     
    #4 uart, Jul 6, 2012
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    109,170
    49,623
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    you may want to jack up each wheel and see how it spins by hand.
     
    #5 bisco, Jul 6, 2012
  6. Corwyn

    Corwyn Energy Curmudgeon

    Joined:
    Mar 6, 2011
    2,171
    659
    23
    Location:
    Maine
    Vehicle:
    2007 Prius
    Model:
    II
    It is possible the 2008 has a different no-gas regeneration rate than the 2006. Try both with a tiny bit of gas pedal (to produce no arrows on the 'energy' screen), and see if they are the same under those circumstances.
     
    #6 Corwyn, Jul 6, 2012
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    109,170
    49,623
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i didn't notice any difference in feel between my 04 and 08, but the 08 did seem to get slightly better mileage?
    now the pip has noticeably more drag.
     
    #7 bisco, Jul 6, 2012
  8. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    No doubt! My 2005 used to be able to glide/warp stealth for a full mile is started at 55mph. The 2012 is a joke in comparison. It can barely cover 1/4 of the distance. The 2012 gets significantly better mpg though. :)
     
    #8 F8L, Jul 7, 2012
  9. 69shovlhed

    69shovlhed Surly tree hugger

    Joined:
    May 13, 2012
    2,170
    748
    0
    Location:
    Delaware
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    perhaps the rear brakes are adjusted too tight?
     
    #9 69shovlhed, Jul 15, 2012
(You must log in or sign up to post here.)