NHTSA Complaint #11701423 — 2018 HYUNDAI SONATA

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11701423
Vehicle	2018 HYUNDAI SONATA
Component	ENGINE
Date of Incident	November 8, 2025
Date Filed	November 25, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	TX

Consumer Description

Car started misfiring while driving and engine light came on. It kept losing power but I was able to pull off highway. This put myself and others in danger because speed was significantly reduced suddenly. Dealer said problem was due to oil leaking on spark plugs. The car had been using excessive oil. Dealer said this is known issue but I had to pay for any repairs since I was the second owner. Hyundai still pays for the original owner to get an oil consumption cleaning, but recently stopped paying for secondary owners. If the oil consumption cleaning does not work, then the next step is to replace engine, paid by customer if Hyundai refuses. Mileage on car is 75,769.

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