2018 Kia Optima Seat belts Problems
- Complaints
- 5about this part
- Share
- 2%of 233 total for the year
- Median mileage
- 32,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the seat belts of the 2018 Kia Optima, 2% of the 233 complaints for this model year. Where a mileage was given, the median is 32,500 miles. 2 of these say a crash was involved, 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.
“There is a problem with the passenger's seat belt. Often times the alarm goes off when no one is seating in the seat especially while driving. Also, when someone is sitting in the sit it overly locks no matter the speed of the car, thus causing the passenger to have to undo and redo the seat belt while driving. The seat belt has its own mind.”
NHTSA complaint #11217041, filed 2019-05, 19,000 miles“I was run off the road by a drunk driver I hit a tree at 35MPH MY AIR BAGS DID NOT DEPLOY NOR DID MY SEAT BELT LOCK!!!! I NOW HAVE MULTIPLE INJURIES I HAVE BROKEN BONES ALL THROUGHOUT MY FACE!!!!! A SEVERE CONCUSSION!!!!! Any time I call the the customer care center and try and get information or call someone I either get hung up or gave the run around and then hung up on my mother in law has also tried calling and have received the same response this is so unacceptable and unprofessional.”
NHTSA complaint #11751435, filed 2026-07“While driving, car in motion, Front Passenger Seat belt Audio Warning Periodically goes off without reason. Indicating seat is occupied & seat belt needs putting on. When seat has been unoccupied / clear from any type of weight on seat to trigger sensor. Audio warning will continue until seat belt is latched over the empty seat. Local KIA Service Dept was informed & could neither confirm or deny its faulty behavior for it did not present itself during time of service. They said, wiring looked fine but did no further testing. …”
NHTSA complaint #11431769, filed 2021-09Seat belts: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 4 | 3% |
| 2019 | 2 | 1% |
| 2018 | 5 | 2% |
| 2017 | 8 | 3% |
| 2016 | 3 | 0% |
| 2015 | 2 | 0% |
| 2014 | 1 | 0% |
| 2013 | 18 | 1% |
| 2012 | 5 | 1% |
| 2011 | 2 | 0% |
| 2010 | 2 | 3% |
| 2009 | 1 | 1% |
| 2008 | 2 | 1% |
| 2007 | 3 | 2% |
| 2006 | 1 | 1% |
| 2005 | 3 | 2% |
| 2004 | 6 | 3% |
| 2003 | 1 | 1% |
| 2002 | 2 | 2% |
| 2001 | 5 | 4% |
Other parts of the 2018 Kia Optima
132 complaintsOther or unknown
39 complaintsElectrical system
33 complaintsTransmission and drivetrain
19 complaintsBrakes
17 complaintsEngine cooling
14 complaintsExterior lighting
14 complaintsFuel system
13 complaintsSteering
12 complaintsVehicle speed control
10 complaintsAir bags
9 complaintsBody and structure
7 complaints
← All problems reported for the 2018 Kia Optima
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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