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My parents have a 2011 528i (240hp N52 inline-6, 8-speed) and average 26.0mpg
I was expecting my 2012 328i (240hp N20 turbo 4, 8-speed) to average 29-30mpg since it's 600lbs lighter and has a smaller engine with more power
I'm currently averaging 26.6mpg after 2 tanks of gas
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