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

Real world UK motorway mpg

Discussion in 'Gen 2 Prius Fuel Economy' started by Martin Hunt, Feb 11, 2018.

  1. Martin Hunt

    Martin Hunt Junior Member

    Joined:
    Feb 4, 2018
    8
    9
    0
    Location:
    Euxton, UK
    Vehicle:
    2008 Prius
    Model:
    Four
    Hi guys. Just got the wife a mega mile 2008 T3 which she loves and is giving about 35mpg on short round town journeys in low temperatures so happy with that.
    I'm in two minds now if I want one for my daily commute as I do 126 miles per day of which about 115 are sat at 80mph (I mean 70 obviously) on the mo to motorway.
    Wondering how the Prius would fair vs the merc B180 I'm running that gives me 50mpg approx.
    Thanks
     
    #1 Martin Hunt, Feb 11, 2018
  2. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,105
    10,039
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Is the Imperial or U.S. gallons?

    A Gen2 or Gen3 Prius won't be getting 50 mpg-US at 80 mph.
     
    #2 fuzzy1, Feb 11, 2018
  3. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,662
    38,207
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    There'll be a significant difference between those two numbers.
     
    #3 Mendel Leisk, Feb 11, 2018
    Martin Hunt likes this.
  4. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,693
    48,945
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    is the merc causing lung cancer?
     
    #4 bisco, Feb 11, 2018
  5. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,662
    38,207
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    I keep thinking Mercury, lol.

    Sorry, sorry..
     
    #5 Mendel Leisk, Feb 11, 2018
    Martin Hunt likes this.
  6. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    44,829
    16,065
    41
    Location:
    Canada
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    IIRC, a Gen 2 will do 55 Imp. mpg at 70mph (5.1L/100km or 46 US mpg). It'll be much worse at 80mph, probably worse than your B180 if I'm being honest.

    This is for the 3rd generation, 2010 Prius (which is supposed to get better high speed fuel economy) so expect worse than what this graph shows.

    Updated MPG vs MPH chart | PriusChat


    At 80mph, the 2010 Prius gets around 40mpg US/5.9L/100km/48 Imp. mpg, so the 2008 will get worse than 48mpg.
     
    #6 Tideland Prius, Feb 12, 2018
    Last edited: Feb 12, 2018
    Mendel Leisk likes this.
  7. LVA

    LVA Junior Member

    Joined:
    Sep 15, 2016
    10
    2
    0
    Location:
    Finland
    Vehicle:
    2006 Prius
    Model:
    Touring
    B180 merc and Prius gen 2 does have quite similar MPG in higher speed. I think 50mpg (Imperial) is achievable because my overall consumption is like that. I drive quite a lot long distance with high speed, mainly 60-80mph.

    In theory diesel is better in high speed, but that B merc is too tall to beat Prius MPG in high speed....
     
    #7 LVA, Feb 12, 2018
  8. Martin Hunt

    Martin Hunt Junior Member

    Joined:
    Feb 4, 2018
    8
    9
    0
    Location:
    Euxton, UK
    Vehicle:
    2008 Prius
    Model:
    Four
    Guys, so sorry for the lack of response to date, I'd honestly forgot I posted this and a new job has kept me uber busy.
    I have now got myself a 2004 Gen II and can update as follows.
    Wife's, which is actually a 2007 T4 not a 2008 T3 as previously suggested, is doing 45mpg round town in the nice weather (and after having the brakes totally replaced and unseized).
    My 2004 TSpirt is doing 53mpg on my motorway runs in the nice weather at a dashboard 80 mph (75mph on the GPS).
    Both the above are imperial mpg in warm weather with the AC on
    Thanks

    Posted via the PriusChat mobile app.
     
    #8 Martin Hunt, Jul 27, 2018
    bisco likes this.
(You must log in or sign up to post here.)