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    Maths - Convert litres/100 miles to mpg

    Now, i've had a little think about this, but i end up getting totally confused, can anyone help me?

    Just did a 1000 miles round Devon and Cornwall the last two weeks, and the trip computer says i got 8.9 litres/100 miles. Now, i know 4.55 would be 100mpg, so 9.1 is 50mpg, but i'm stuck on the exact calculations

    11 Comments

    8.9 litres = 1.9577255 Imperial gallons
    100 / 1.9577255 = 51.0796841

    8.9 litres = 1.958 Imperial gallons as per convert.web-max.ca/ind…e=2
    so 100 miles per 1.958 gallons = 51.07 miles per gallon (1.959 gallons @ 51.07 mpg = 100 miles travelled).
    Not a bad return I guess you're driving a diesel.
    Grr beaten to it lol

    doh !!

    Original Poster

    Cheers guys, it is indeed a diesel. a 2.0 Mazda 6 :thumbsup:

    I see it is very simple conversion when you know how to do it :-D

    How does this compare to the 200 miles(if I'm lucky) I get from £50 in my Impreza :shock::w00t:

    i just got 25 mpg towing a caravan for 600 miles (return jurney) in a diesel, that doesnt sound to good

    jtx;2759320

    How does this compare to the 200 miles(if I'm lucky) I get from £50 in my … How does this compare to the 200 miles(if I'm lucky) I get from £50 in my Impreza :shock::w00t:



    mines the same lol! What reg is yours? Mine's an N Reg Jap Import Sti :thumbsup:

    autolesbona;2759467

    mines the same lol! What reg is yours? Mine's an N Reg Jap Import Sti … mines the same lol! What reg is yours? Mine's an N Reg Jap Import Sti :thumbsup:



    It's a W reg uk turbo with a few mods, juicy but worth it:thumbsup:

    jtx;2759320

    How does this compare to the 200 miles(if I'm lucky) I get from £50 in my … How does this compare to the 200 miles(if I'm lucky) I get from £50 in my Impreza :shock::w00t:


    23 ish mpg at 126.9 pence per l

    Dont ask me I got the last one wrong :oops:

    ding;2759334

    i just got 25 mpg towing a caravan for 600 miles (return jurney) in a … i just got 25 mpg towing a caravan for 600 miles (return jurney) in a diesel, that doesnt sound to good



    Your towing a caravan that weighs at least a ton, PLUS the shame of it is creating massive wind resistance.....

    Your lucky your getting 25!

    by the way, I drive a diesel and it only costs me 20p a litre to run

    (home made biodiesel)

    The old car was even cheaper it was only 5p

    (filtered chip shop fat)
    But the new car wont run on that it has to be proper biodiesel
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