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My wife’s 2016 340XI is averaging 31 mpg. 75% interstate averaging 75ish mph and 25% city. 0w 20 Catrol edge oil. She uses mostly comfort and some sport and never puts it in eco. Also we ditched the heavy run flats and are now running much lighter Michelin pilot As3+. She has a lead foot too so I’m surprised it’s this good.
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