NHTSA Complaint #11719316 — 2021 HYUNDAI SONATA

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11719316
Vehicle	2021 HYUNDAI SONATA
Component	ENGINE
Date of Incident	February 9, 2026
Date Filed	February 20, 2026
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	FL

Consumer Description

The EHRS coolant system failed and had a leak causing the coolant to be excessively burned off as thick white smoke. This caused me to not be able to see anything behind me and forced others to stop or slow down dramatically to avoid colliding with me. I had my engine overheat and force me to pull over on the side of an unsafe road because the exhaust system burned off my entire tank of coolant in less than a mile. I have taken this to a Hyundai dealership and they confirmed it was the EHRS system failure and told me it was a fairly known issue with the 2020-2023 Sonata Hybrids. I was told that even if I get it replaced the possibility of having it happen again are pretty high. This seems extremely unsafe to myself and others.

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Recent Complaints for the 2021 HYUNDAI SONATA

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