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When I first read about the feature I related these new electrics as an enhancement to the auto start-stop to perhaps make that a little less jolty. Additionally, I think this could improve the mpg rating in ECO mode on long highway cruises (think electrically enhanced coasting to maintain constant speed which does not take a lot of horsepower). I never really thought it would decrease emissions beyond the minor fuel savings for that type of driving.
Personally I dislike the auto start-stop feature and used the Bimmercode app to remember my last used ASS setting, so now I don't have to be irritated at the first stop every drive.
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2020 540i MSport | Alpine White | Mocha Nappa | Aluminum Rhombicle | Exec Pkg | Luxury Seating | Bowers & Wilkins | Parking Assistance Pkg | MSport Brakes | Ceramic Controls | Space Saver Spare |  |