My 535 was downright dangerous. They fixed some of the lag via a software update at some point. It was enough of a problem that an update was released specifically to deal with it. It has to do with drive by wire mixed with the transmission seeking.
It's much better now, and I have a sprint booster, but it isn't virtually instantaneous like almost every other car or motorcycle I've ever had.
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Retired 2016 BMW 550i xDrive MSport | 2013 BMW 550i xDrive MSport | 2012 BMW 535i xDrive | 1988 BMW 325ic | 1984 BMW 318i
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