Hyundai and Kia Theta II Engine Failures: What Teardowns and Recalls Reveal

Few modern engines have generated as much controversy as Hyundai’s Theta II four-cylinder. Used in millions of Hyundai and Kia vehicles, the engine became the focus of recalls, lawsuits, government investigations and engine replacements. Teardown videos show the bearing damage left behind, while official recall filings explain how manufacturing defects …

2005-2026 Nissan Frontier Engines: What to Check Before You Buy

The second-generation Nissan Frontier debuted in North America for the 2005 model year. Known internally as the D40, it stayed in production through 2021. The third-generation Frontier arrived for 2022, but its engine had already debuted in the outgoing truck. Three engines span these two generations. The 2.5-liter four-cylinder and …

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