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km/l Reading on Car Display

  • 14-03-2024 9:34am
    #1
    gandalfio
    Registered Users, Registered Users 2 Posts: 831 ✭✭✭


    Hi seeking some advice regarding a Toyota Aqua petrol hybrid.

    The fuel economy display shows in km/l. The average is 7.7 (which is 21 Mpg). This is very low and I can't figure out if I'm missing something?

    When you change it to trip A and B, it's 19.8 (which is 55mpg and much better). Am I reading the overall average wrong?



Comments

  • #2
    User1998
    Registered Users, Registered Users 2 Posts: 7,673 ✭✭✭User1998


    Trip A is your short term average, and Trip B is your long term average.

    Trip A will continuously change based on your driving habits. Drive it slow for a bit and prevent the engine from kicking in and that figure will go to 100mpg fairly quickly



  • #3
    magicbastarder
    Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 50,858 CMod ✭✭✭✭magicbastarder


    as above, on my car (not a toyota) the average on trip A is recent driving, and resets if the engine is off for more than two hours. you'd expect to see if high if you've been doing urban, or very stop/starty driving. (mine displays in l/100km, but the same principle applies)



  • #4
    Charles Babbage
    Registered Users, Registered Users 2 Posts: 6,085 ✭✭✭Charles Babbage


    7.7L per 100Km is around 37MPG. Not great, but not especially bad.



  • #5
    User1998
    Registered Users, Registered Users 2 Posts: 7,673 ✭✭✭User1998


    https://www.boards.ie/discussion/comment/121893699#Comment_121893699

    Yeah, it needs to be converted to UK MPG not US MPG. (How there is a difference between the two I don’t know)



  • #6
    vandriver
    Registered Users, Registered Users 2 Posts: 3,472 ✭✭✭vandriver


    https://www.boards.ie/discussion/comment/121893699#Comment_121893699

    Except it's 7.7 km for a litre.Thats 13l per 100km



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  • #7
    djan
    Registered Users, Registered Users 2 Posts: 1,900 ✭✭✭djan


    https://www.boards.ie/discussion/comment/121893818#Comment_121893818

    Really depends on type of driving. This would be normal enough in stop start traffic especially with a cold engine.



  • #8
    Charles Babbage
    Registered Users, Registered Users 2 Posts: 6,085 ✭✭✭Charles Babbage


    https://www.boards.ie/discussion/comment/121893818#Comment_121893818

    That would be different, but it isn't usual for gauges to show km per litre.



  • #9
    User1998
    Registered Users, Registered Users 2 Posts: 7,673 ✭✭✭User1998


    Jap imports show km per litre



  • #10
    vandriver
    Registered Users, Registered Users 2 Posts: 3,472 ✭✭✭vandriver


    https://www.boards.ie/discussion/comment/121893952#Comment_121893952

    My old Citroen c4 did.



  • #11
    kaahooters
    Registered Users, Registered Users 2 Posts: 705 ✭✭✭kaahooters


    thats verypoor 7.7km/l is 21.5mpg (uk) 18.1 mpg (US), but, if the trip computer just reset and your oing shot trips its fine.


    yourt 2nd longer term one seems more to what would be expected.



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  • #12
    kirving
    Registered Users, Registered Users 2 Posts: 6,125 ✭✭✭kirving


    7.7[km/l], 13[l/100km], 21.7[UK mpg], 18.1[US mpg] is expected for the first couple of km while driving, but is absolutely terrible over any longer distance, especially in a small hybrid.

    You'd want to be tearing around the place constantly to cause that. I recently had an old Pruis on an extended loan, and it would do nearly triple that milage on a 35km commute.

    @gandalfio When you accelerate, you should be taking it slow enough to take off on battery initially, and when braking, do so gently enough that the battery charges as you do.



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