i have a new bmw x3 v6 engine. it is reALLY NOISY FROM 0 TO 40 MPH THEN QUIET. wHY IS THAT
does it have a belt driven fan? they can be noisey
It's a 2012 - take it back to the dealer and ask them - it's under warranty.
What version is it the 28i or the 35i? Yes do take it into the dealer they can tell you if something is wrong or not.
Transmission belly-achin'? or is it definately the engine?
If someone put a V6 in there youll have all sorts of problems. Return to the dealer and have them re-install the inline 6 engine
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