One problem related to manifold/header/muffler/tail pipe has been reported for the 2016 Ford Mustang. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2016 Ford Mustang based on all problems reported for the 2016 Mustang.
Shelby gt350 5. 2l engine valve cover gasket failure caused oil loss and fire in engine bay--oil burning on exhaust manifold. Smoke under hood and into passenger compartment. Car towed to dealership with manufacturer's roadside assistance. Oil spray from valve cover gasket onto exhaust manifold with medium rpm (~3000 rpm) and higher.