2018 Kia Optima Exterior lighting Problems
- Complaints
- 14about this part
- Share
- 6%of 233 total for the year
- Median mileage
- 32,662miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 14 complaints about the exterior lighting of the 2018 Kia Optima, 6% of the 233 complaints for this model year. Where a mileage was given, the median is 32,662 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have the Kia Optima sx with the technology package that comes equipped with the auto-leveling and auto-bending LED headlamps. I believe that the auto-leveling function is working incorrectly. When weight is added to the car (more passengers) the beam pattern auto adjusts itself to point even lower instead of higher. This causes an adverse effect. Think of it this way, the beam has a default setting to where it points to when there is no weight added to the car. …”
NHTSA complaint #11339940, filed 2020-07, 20,000 miles“When driving with headlights set to Auto the headlights turn off whenever the blinker is used. I've found many complaints however my vehicle has not been inspected. This poses a hazard of driving at night with no headlights, then having to fiddle with the switch to turn them back on.”
NHTSA complaint #11453718, filed 2022-02“Headlights randomly turn off while driving. To get them back on you have to switch on and off before they turn back on. Very dangerous for my 17 yr old daughter driving down a highway at night. The lights will also turn on in the middle of the night and if we happen to notice, we have to go to the car and turn the lights on and off to get them fixed. There are numerous reports on this when Google. I am not the only one. Really dangerous!”
NHTSA complaint #11516617, filed 2023-04“My grandson was driving home last night on our Clay County West Virginia narrow unlighted road when his 2018 Kia Optima Headlights went out completely. He wrote that he was scared but finally was able to get lights back on before running off the road. Also, several nights while car is locked with one in the car: the headlights came on. He had to unlock the car and start it up to finally get the headlights off. The lights were off when he first entered the house. …”
NHTSA complaint #11613462, filed 2024-09“Driving at night, was getting onto the freeway. Entrance to the freeway was on a curved street, as I was taking the turn leading into the freeway the lights turned off, Then suddenly turned back on and then off again all while I was merging onto the freeway. I quickly took the light out of “AUTO” setting. Very scary as I almost got hit by the truckers already on the freeway. I’ve had issues with the blind spot warning as well. It fails all the time so of course I never put my trust on that. …”
NHTSA complaint #11427323, filed 2021-08Related service bulletins
- 10201529Sep 13, 2021TECHNICAL SERVICE BULLETIN: INFORMATION FOR HEADLAMP CONDENSATION AND MOISTURE - This bulletin has been revised to include additional information. New/revised sections of this…
- 10170778Jan 21, 2020TECHNICAL SERVICE BULLETIN: HALOGEN HEAD LAMP LOW BEAM BULB CONNECTOR REPLACEMENT - This bulletin provides information regarding the procedure to repair the bulb connector on…
Exterior lighting: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 2 | 1% |
| 2019 | 2 | 1% |
| 2018 | 14 | 6% |
| 2017 | 15 | 6% |
| 2016 | 47 | 6% |
| 2015 | 23 | 2% |
| 2014 | 18 | 3% |
| 2013 | 40 | 3% |
| 2012 | 31 | 3% |
| 2011 | 88 | 15% |
| 2010 | 2 | 3% |
| 2009 | 9 | 8% |
| 2008 | 8 | 6% |
| 2007 | 27 | 16% |
| 2006 | 16 | 10% |
| 2005 | 4 | 3% |
| 2004 | 5 | 2% |
| 2003 | 3 | 2% |
| 2002 | 2 | 2% |
| 2001 | 3 | 2% |
Other parts of the 2018 Kia Optima
132 complaintsOther or unknown
39 complaintsElectrical system
33 complaintsTransmission and drivetrain
19 complaintsBrakes
17 complaintsEngine cooling
14 complaintsFuel system
13 complaintsSteering
12 complaintsVehicle speed control
10 complaintsAir bags
9 complaintsBody and structure
7 complaintsSeat belts
5 complaints
← All problems reported for the 2018 Kia Optima
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology