7 complaints reported

2018 Kia Optima Electrical System

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
7
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Sep 2024

Oil pressure switch faulty only has 58168

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Sep 2024
Apr 2023

The engine consumes all the oil within 1000 miles. The oil light comes on around 800 miles after oil change. The dealership did the 3 separate tests and they all failed. Dealership stated the engine is faulty however Kia corporate denied the claim. There is already a class action lawsuit in progress in California.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Apr 2023
Nov 2022

Normally, when the doors are open my car will tell me. The doors notify me that they're open but my trunk was not showing that it was open. It blinks when it is. Due to that I was driving and my trunk seemed closed and it just flew open. So the problems I'm having is that my trunk will not show its open but it also will not close AT ALL due to the latch. I literally had to bungee it closed. This is dangerous. I have seen many recalls in other kia's and hyundai's just like this. This is very dangerous and needs to be recalled and/or fixed.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Nov 2022
Mar 2022

The electrical components connected to the headlights seem to be faulty. When lights are set to AUTO, the lights will turn off completely when switching on turn signal. At times the light will not come on at all when set to AUTO or On without cycle back to off.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Jul 2021
Sep 2021

Vehicle is making a noise when trying to accelerate. Have replaced all spark plugs and coil #4. It is making noise still and shaking. Coil has been switched and issues are reading fuel injector or air intake or electrical. Previous reading was head gasket... Only on spark plug 4 coil is it reporting an issue...All dealerships locally are booked to even get a diagnostic test.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Aug 2021
Oct 2020

MY CAR SUDDENLY EXPERIENCE MAJOR ELECTRICAL ISSUES. I DROVE MY CAR TO THE STORE AND BACK HOME. I WENT BACK TO MY CAR AND IT STARTED WITH NO PROBLEM BUT MY DASH WAS FLASHING, MY BRAKE, STEERING, CHECK ENGINE, AIRBAG, ABS, AND TRACTION'S CONTROL INDICATORS CAME ON ALL AT ONCE. I WAS NOT ABLE TO SHIFT THE CAR INTO GEAR. I USED THE PARK RELEASE SHIFT TO PUT THE CAR IN GEAR AND THE CAR HAS NO POWER STEERING. BUT IT MOVES. I TOOK IT TO THE JEFFERY KIA IN ROSEVILLE,MI AND BASICALLY WAS TOLD THAT THEY DIDN'T KNOW WHAT WAS WRONG WITH CAR. THEY ASK ME HAD MY CAR BEEN STRUCK BY LIGHTNING! YOU CAN LOOK AT THE CAR AND SEE THERE HAS BEEN NO ACCIDENTS OR LIGHTNING STRIKES TO THE CAR. THEY WANTED TO CHARGE ME EXTRA MONEY TO KEEP THE CAR JUST TO TELL ME WHAT'S WRONG WITH IT. I KNOW THIS IS A DEFECT WITH THIS VEHICLE. I SEE THE EPD RECALL ON 2018 KIA OPTIMA BUT THEY ARE SAYING IT'S ONLY FOR HYBRIDS. WHICH IS FALSE THIS HAS TO BE HAPPENING TO ALL THE KIA OPTIMA MODELS.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Oct 2020
Feb 2019

TL* THE CONTACT OWNS A 2018 KIA OPTIMA. WHILE REVERSING THE VEHICLE, THE REAR AND SIDE SENSORS FAILED TO IDENTIFY TWO PEOPLE WALKING PAST. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS TAKEN TO SUNSET KIA OF AUBURN (3401 AUBURN WAY N, AUBURN, WA 98002, (855) 474-9626) WHO STATED THAT THE SENSORS WERE WORKING AS DESIGNED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 14,356.

Type: Vehicle, Vehicle: 2018 KIA OPTIMA, Manufacturer: Kia America, Inc.
Incident: Jul 2019

Trend Over Time

Complaints by year

Quick Summary

The 2018 Kia Optima has 7 Electrical System complaints on file. Review the timeline above for detailed owner experiences.