Hyundai and Kia are recalling around 534,000 additional U.S. vehicles at risk of engine fires.

Analysis by HLDI suggests that the OEMs are correctly targeting vehicles with small and/or turbocharged engines for a recall.

A class-action lawsuit filed Friday against Hyundai and Kia alleges a dangerous defect affecting certain vehicle models can cause premature engine failure and spontaneous fires in the engines.