Jeff
It should not decrease the MPG unless DME (engine) module was update and there is no reason for them to update it. Unless there was ongoing problem with the car.
I reckon they have reset the mpg counter and it will take few days/ miles to get the correct values.
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F36 Xdrive for her - HUD, park assist, heated steering wheel, rear camera, Apple car play
F36 RWD for him - HK, M sports pack, GTS tail light, Apple car play
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