I recently had to replace my motor in my 2013 dodge ram 1500 sport. they put in a rebuilt motor and i have noticed I am having a hard time with fuel mileage, on my motor that came with the ram I could keep the fuel consumption at 13L per 100km, with the new rebuilt motor I am having a hard time getting it below 18L per 100km. No idea whats going on. does anyone have any ideas?

  • Welcome to the site! Was the replacement engine the exact same as the original in specification? Did they put the same transmission back in?
    – GdD
    Commented Jan 20, 2020 at 8:37
  • 1
    Has the engine been run in? And had an oil change/ service since being refitted? Commented Jan 20, 2020 at 8:54
  • Did you change tire size about then as well or anything else on the drive train?
    – Solar Mike
    Commented Jan 20, 2020 at 9:54
  • lots of parts on the engine have probably not been replaced with new ones,like the injectors and other external parts on the engine. Commented Jan 20, 2020 at 14:02
  • no the engine has not had time to be run in yet... and it is all a rebuilt motor to the same as my previous motor, no tire size change and everything stayed the same except my motor being replaced by a exact rebuilt engine as to my old one. im clueless on why its costing more in gas
    – Bruce
    Commented Jan 22, 2020 at 6:17


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