Vehicle
2021 HYUNDAI TUCSON
Manufacturer
Hyundai Motor America
Components
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM
Dates
Incident: 01/10/2025
Filed: 02/09/2026
Owner complaint summary
The vehicle experienced a catalytic converter efficiency failure that was confirmed by an authorized dealership in January 2025. The dealer indicated the catalytic converter required replacement; however, the replacement was not performed, and the vehicle was returned to service with an unresolved emissions defect. Less than one year later, the vehicle developed recurring emissions system failure, loss of power, drivability issues, and repeated warning indicators. The vehicle is currently out of service while additional components, including oxygen sensors and spark plugs, are reported to be affected. The manufacturer is declining to replace the catalytic converter and is attributing the condition to oil consumption despite the prior unresolved emissions failure. The issue has been confirmed by dealership diagnostics and has resulted in prolonged loss of use of the vehicle. This appears to be a continuing engine and exhaust/emissions system defect that was not properly remedied when first identified and may affect safe operation of the vehicle.
Official record ID (ODI): 11716729. This page is the human-readable source link used across afterwarranty. The raw JSON link proxies NHTSA's public API for machine verification; prefer this page when reading the complaint.