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Thread: Low mpg on my new BMW, need to finish break-in first?

  1. #1
    Join Date
    May 2019
    Location
    United States
    Posts
    1
    My Cars
    BMW

    Low mpg on my new BMW, need to finish break-in first?

    Hi all, did some 800 km on my new 320d (90% extra-urban, 10% city) and only got 5.7 - 5.8 l/100 km. Specs say it could be as low as 3.8 l/100 km extra-urban. Are these figures total scam? Like it is 35% difference.vidmate mobdroI was driving in eco pro mode not faster than 120 km/h (average speed about 70 km/h on this 800 km stint) and engine rpm lower than 3500 according to break-in instructions. I was pretty economical, start-stop always on, no hard accelerations, engine braking where possible, etc
    Last edited by EthanWalter; 06-03-2019 at 11:01 AM.

  2. #2
    Join Date
    May 2003
    Location
    quebec
    Posts
    1,427
    My Cars
    |99 Turbo M3 | 2K7 335|
    5.7l/100 is over 40mpg !! it is really really good ! I do 20mpg (12l/100km) on my 2014 335, and about 10-12mpg (20l/100km) on my turbocharged e36 M3 ;-P
    _____________________________


  3. #3
    Join Date
    Aug 2007
    Location
    Vancouver, B.C., Canada
    Posts
    8,162
    My Cars
    '97 M3
    My M3 turbo gets about 16.5 l/100km daily driving and about 45 l/100km on the track. Your diesel is doing pretty good. I would never expect a car to reach the advertised mpg numbers. Marketing is all about how to present a lie that the public will accept.

    New engines won’t be at their peak efficiency until broken in.

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