

09’ - 20’ Hyundai Santa Fe, Sonata Hybrid, Tucson, Elantra and Veloster and Kia Forte, Optima Hybrid, Sorento, Soul and Sportage with Theta II 2.4-liter multipoint fuel injection (MPI), 1.6-liter Gamma GDI and 2.0-liter Nu GDI had a class action for engine failures, it’s pretty much a guarantee that the engine will fail. I avoided the 3.6L caravan/t&c because they can have camshaft issues. Mine has the older pushrod v6 3.3.




















They did an ecu update for more sensitive knock sensing and extended the engine warranty to 15yr/150k. I heard they replaced a ton of engines under warranty, but I can’t imagine that they changed much in the engine design. The problem is rod bearings failing and the engine seized. Some analysis showed that there could have still been machining debris in the engine from the factory or overall oiling issues. Lack of maintenance probably plays a factor as well. It looks like they were just poorly designed.