Hyundai, Kia Cars Have Vapor Buildup Problem, Class Suit Says

Hyundai Motor America Inc. and Kia Motors America Inc. knowingly sold vehicles with a defect that allows gas vapors to build up in the fuel system, a consumer class action complaint alleged.

Vehicles with a T-GDI 1.6L Gamma II engine, including 2020-2024 Hyundai Sonatas and 2021-2024 Kia K5s, contain defective evaporative emissions control systems and engine control modules, according to the complaint filed Thursday in the US District Court for the Eastern District of California.

The EVAP system and ECM “prevent gas vapors in the system as well as air from the outside from being properly directed towards the intake ...