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      12-16-2023, 03:13 PM   #2
kyrix1st
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Drives: G87 M2; E92M3 MT&DCT; M3 euro
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I'm assuming you are not talking about the starter motor crank.

It is very common for M engines, new or old, to make this noise especially when it is cold outside. I suspect it's a combination of increased vibration from the reinforced engine mounts and chassis, and louder injectors and secondary air pump due to the colder weather.
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