One problem related to engine noise has been reported for the 2012 Chrysler 300. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Chrysler 300 based on all problems reported for the 2012 300.
Was driving down the road and car started making a noise. Pulled over and popped the hood and smelled burning of plastic. Alternator was smoking. Had to have towed home.