NHTSA Complaint #11716049 — 2025 LEXUS RZ

Beginning in September 2025, I experienced respiratory symptoms, including coughing, chest discomfort, and shortness of breath, that appeared to be triggered when entering or operating my vehicle. The symptoms consistently improved when I was not using the vehicle and returned upon re-exposure. The specific component responsible is UNKNOWN. I suspect a possible cabin air quality, HVAC, or material-related issue, but I am not able to identify a specific failed part. My safety was put at risk because symptoms occurred while driving, including during traffic conditions, which affected my ability to breathe comfortably and concentrate. The issue has been reproducible. The vehicle was inspected by a Lexus dealership and later by a Toyota/Lexus Field Technical Specialist. No warning lights or dashboard alerts were present. The inspection did not identify a cause, but the symptoms persisted. The vehicle remains available for inspection. This report is being submitted to document a potential vehicle safety or air quality concern for further review.