Bimmer making loud noise after I turn on 328i 2011

[Blingbimmer]

Just bought this bimmer from car max in Albany NY last week. It’s making a loud noise after startup.

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[Breeze1]

Hard to tell like that. You should make a vid with the hood open, facing the engine and try to locate where the sound is coming from.

[bmwdirtracer]

That's a bad noise. Bad...as in....something is about to come apart violently. Personally, I wouldn't drive the car at all, I'd have it flatbedded to a BMW specialist shop, before a pulley falls off, and it destroys several thousands of dollars of stuff underhood.