Kia and Hyundai's Theta engines have been around for a while, but they're not without problems. Here are some of the most common issues facing these engines.

Looking at 7 automakers with vehicles that are experiencing engine failures in 2026. These include major engine recalls from Toyota, GM 6.2L V8 engine failures, Hyundai/Kia engine failures, Honda 1.5L ...

A 2.0-liter Theta II engine in a Kia Sportage - P199/Wikimedia Commons The launch of Hyundai's first Theta engine in the 2004 Sonata helped signify that the Korean automaker was moving beyond its 20th ...