I am the owner of the 12/17 build with the exact same issue. After 3 visits to the dealer to get a fix, BMW now says it is normal. I do not accept that notion. Many other owners state that their cars do not shake or miss when started. I live in a warm climate and wonder how it would act in a cold winter climate. One of my work orders state (at 800 miles) that the plugs were fouled, hence they replaced them. But no improvement.
What is your dealer telling you now?
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