NHTSA Complaint #11524617 — 2018 KIA OPTIMA

ENGINE issue reported to NHTSA

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Complaint Details

ODI Number	11524617
Vehicle	2018 KIA OPTIMA
Component	ENGINE
Date of Incident	May 26, 2023
Date Filed	May 31, 2023
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	GA

Consumer Description

-Knock Sensor Detection System - ECU Logic Improvement - I Was driving with my infant son in the backseat. I was going 70 mph when my car started rapidly losing speed. This happened again with just myself after receiving the car from mechanic. There was heavy traffic and I had to swerve to avoid being hit by an 18-wheeler. - I can see on the website where I received the car from, there is a recall for my exact make and model with the same code but they say there is no recall for my specific car. - The check engine light started flashing and Kia Systems starts talking.

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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 . ...