Hyundai Theta II Engine Lawsuit: The Fire and Failure Settlements

The Engine Defect

Hyundai and Kia’s Theta II gasoline direct-injection (GDI) engines — the 2.0-liter and 2.4-liter four-cylinders used across many popular models — were prone to a serious defect. Manufacturing debris and other issues could restrict oil flow and cause bearings to wear, leading to knocking, stalling, sudden engine failure and, in some cases, engine-compartment fires. Because a stall at speed or an under-hood fire is a safety hazard, the problem drew both class-action lawsuits and regulatory scrutiny, including questions about whether earlier recalls covered enough vehicles.

This is a distinct issue from the separate theft problem involving missing immobilizers; here the defect is inside the engine itself.

The Settlements

The automakers resolved the litigation in stages. A 2019 settlement earmarked about $760 million for Theta II GDI engine claims, and the overall resolution expanded to roughly $1.3 billion as more vehicles and issues were folded in, with a further settlement in 2023 covering an additional 2.1 million vehicles. The relief included lifetime warranties on the engine, free inspections and repairs, reimbursement for past repairs, towing and related expenses, and compensation for vehicles lost to engine fires.

The lifetime warranty is a notable feature — it protects owners going forward, not just for past repairs.

What Owners Should Know

If you own an affected Hyundai or Kia, make sure any engine-related recall or product-improvement campaign (such as a knock-sensor update) has been performed, and keep records of any engine repairs, fires or towing. Warning signs like knocking noises, warning lights or oil-consumption problems should be checked promptly. Confirm coverage and reimbursement through the official settlement administrator and your dealer.