NHTSA Complaint #11688421 — 2016 FORD F-150

Both left and right exhaust manifolds have broken studs that have resulted in exhaust leaks from both manifolds. The broken studs can be seen via a visual inspection. Exhaust leaks can be heard at engine start and during higher load operations. This failure is allowing hot exhaust gas to leak into the engine compartment creating an engine fire risk as well as compromising engine performance. The local Ford dealer confirmed the broken studs and exhaust manifold leaks. The failure was noted during a 100,000 mile service but the symptoms began to be noted at about 60,000 to 70,000 miles.