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poor gas mileage??

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    poor gas mileage??

    i have been driving pretty fast, and hard, but am getting 10.8mpg on last fill up, the first time i have measured it, i think that is extremely low, and am suspect of a problem, car runs really well, no rough idling, i believe there to be no intake leak, but have not tested it as the idle is strong.

    It just seems very strange. The car is a 325ix m20b25 engine, and i think it is rated for 17/24 or something of that. I do drive "city" stop and go but some of it is highway, the MPG guage works, and i would average around 15-20mpg, but dont keep my eye on it all the time.

    Any suggests or something to look at? PO said he replaced all the fuel lines, filter, all look newish <1 year so i believe him, no gas leaks, i am starting to think someone on my street siphoned 3-5 gallons, but i think that is highly unlikely, as the would just take gas out of my truck that holds 23-25 gallons of gas.

    #2
    10.8mpg is approximately 3x as much as i use in my m20.

    Define exactly how you calculated your economy?
    Last edited by e30davie; 10-23-2018, 08:11 PM.

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      #3
      ~260km per tank is easily done by driving like a spaz. Drive normally and report back
      89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

      new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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