‘Sounds like a brand new GM truck engine’: Mechanic reveals the engine noise you never want to hear—especially in a Hyundai or Kia. Then he reveals what you can do about it

If your Kia or Hyundai engine just started making a loud knocking sound, don’t panic. You might be eligible for a free engine replacement due to a massive engine recall.

A viral TikTok video is warning drivers about a defect tied to certain Hyundai and Kia models that can cause a catastrophic engine failure. But there’s a catch: You have to recognize the sound and act on the engine recall before it’s too late.

The clip from auto mechanic creator MotorCarNut (@motorcarnut), who we’ve named “Sparky” in previous stories...