2021 HYUNDAI KONA Seats Problems

The HVAC drainage system in my 2021 Hyundai Kona failed due to a clogged AC drain line, which led to water leaking into the cabin and mold growth. The dealer reported the drain was blocked by a spiderweb and that moisture had collected under the driver and passenger carpets. They unclogged the line, but did not inspect beneath the carpet or inside the HVAC system. Soon after, I experienced musty odors, asthma flare-ups, and headaches while driving. At-home mold tests under the passenger seat and footwell came back positive. White mold was also visibly growing under the carpet. A similar issue occurred in my fiancé’s Hyundai Elantra, also purchased from the same dealer. His AC drain was clogged and mold tested positive in the cabin, though his car had no smell. Our vehicles are stored in different environments, which rules out external environmental causes and points to a broader design...