NHTSA Complaint #11593109 — 2018 KIA OPTIMA

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11593109
Vehicle	2018 KIA OPTIMA
Component	ENGINE
Date of Incident	May 10, 2024
Date Filed	June 7, 2024
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	CA

Consumer Description

Code P-030300 was detected when doing a diagnostic on my car when the check engine light came on. It is a cylinder 3 misfire. When the car comes to a idle the car starts to shake roughly. I took it to the KIA dealership I bought the car from and they told me I would need a new engine and not to drive it.Thankfully nothing bad happened while my baby was in the car. I drove it home and stopped driving it completely once the issue occurred.

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Recent Complaints for the 2018 KIA OPTIMA

#11710029 — UNKNOWN OR OTHER — January 9, 2026 — It started with the oil. I constantly have to add oil. when it first started that’s what I was doing just adding oil....

#11709575 — ELECTRICAL SYSTEM — January 8, 2026 — I turned the car off, it had difficulty turning back on and the brake pedal got really hard. I had to wait about 30-4...

#11709575 — SERVICE BRAKES — January 8, 2026 — I turned the car off, it had difficulty turning back on and the brake pedal got really hard. I had to wait about 30-4...

#11709524 — ELECTRICAL SYSTEM — January 7, 2026 — I was sold an unsafe vehicle at J and J Auto house 6446 Wilshire Bl LA,CA 90022. Dealer withheld condition of car . ...

#11709524 — UNKNOWN OR OTHER — January 7, 2026 — I was sold an unsafe vehicle at J and J Auto house 6446 Wilshire Bl LA,CA 90022. Dealer withheld condition of car . ...