One problem related to manifold/header/muffler/tail pipe has been reported for the 2012 Buick Verano. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Buick Verano based on all problems reported for the 2012 Verano.
Takata recall engine rods banged to made a hole in engine. The engine is made from aluminum and was going to happen any way. Muffling sounded like hole in muffler but was the engine.