2018 Kia Optima
Problems, recalls and owner-reported issues
Engine is the leading concern among 232 owner complaints filed for this model year. This is the 8th highest complaint count among 20 Optima model years with reports.
Of the 2018 reports, 10 involved a crash and 10 involved a fire. 9 people were injured.
What owners report most often
Recalls and investigations
Latches/locks/linkages, trunk lid, latchAug 24, 2023
Kia America, Inc. (Kia) is recalling certain 2016-2017 Rio, 2016-2018 Optima, 2017-2018 Optima Hybrid and Optima Plug-in Hybrid vehicles. The trunk latch base may crack, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
A person inside the trunk compartment may become trapped, increasing their risk of injury.
Dealers will replace the trunk latch base subassembly, free of charge. Owner notification letters were mailed October 19, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC278.
Campaign 23V594000 on NHTSA.gov
Hybrid propulsion systemMar 8, 2018
Kia Motors America (Kia) is recalling certain 2017-2018 Kia Optima hybrid vehicles. These vehicles are equipped with a Voltage Protection Device (VPD), designed to protect the high voltage battery module, that may activate inadvertently.
If the VPD activates while the vehicle is being operated in Electric Vehicle (EV) mode, there may be a loss of power, increasing the risk of a crash.
Kia will notify owners, and dealers will remove the VPD switch and install two newly designed Battery Management Systems (BMS) that contain Overvoltage Protection Devices (OPDs), free of charge. The recall is expected to begin May 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC162.
Campaign 18V161000 on NHTSA.gov
Representative owner complaints: other or unspecified
37 reports, newest first. Show all
Other or unspecified, Aug 11, 2021
While driving at highway speed my children (11, 7, & 5) and I were almost rear-ended when my Kia Optima 2018 (79k) without ANY warning loses power, jerks and then regains power. A number of vehicles behind us had slam on their brakes to avoid a pileup. My Optima almost resembled the feeling when a vehicle runs out of gas but much more abrupt. The drink my son was holding was thrown out of hand due the vehicle jerking to an almost stop and jerking back to power. No warning light, battery & alternator both test good and tank was half full. Two days pass and the same system fail while driving with the same similarities (no warning lights). My Optima is no longer under warranty and I have no financial resources for repairs.
Other or unspecified, Mar 1, 2021
BOTH OF MY BACK DOOR SENSATORS ARE SAYING THE BACK DOORS ARE OPEN BUT THEY'RE LOCKED
Electrical system, Other or unspecified, Oct 22, 2020
2018 KIA OPTIMA EX. SOMETIMES HESITATES WHEN TRYING TO START, UNTIL TODAY. ALL LIGHTS ON DASH LIT UP BUT NO IGNITION. I TRIED SEVERAL TIMES, THEN STEERING AND BRAKE PEDAL LOCKED UP AND I HEARD CLICKING NOISE. HAD SOMEONE JUMP MY BATTERY AND THE CAR STARTED UP, BUT WHEN I TURNED IT OFF, IT WOULD NOT START AGAIN. NOTHING WAS LEFT ON ALL NIGHT, CAR WAS LOCKED AND UNLOCKED WITH HANDLE. I AM CONTACTING THE DEALER THIS AFTERNOON TO SEE HOW THEY HANDLE THIS.
Other or unspecified, Sep 22, 2020
WHEN DRIVING AT NIGHT THE LIGHTS WILL CUT COMPLETELY OFF. YOU HAVE TO SWITCH FROM AUTO TO THE ON POISTION. ITS A VERY SCARY AND DANGEROUS SITUATION.
Other or unspecified, Sep 2, 2020
FIRST OFF MY CAR IS FINE. AGAIN MY CAR IS FINE NO COMPLAINTS. NHTSA HAS MISS IDENTIFIED MY 2018 OPTIMA LX WITH 2.4L ENGINE HYBRID. NHTSA WITH THIS SCREW UP HAS OHIO BMV THINKING MY CAR IS HYBRID AND WANTS AN EXTRA $100 DOLLARS AS A FEE FOR LICENSE BECAUSE THEY THINK IT IS ELECTRIC. OHIO BMV OR APPARENTLY NHTSA DOSE NOT HAVE A PROCESS TO FIX THE PROBLEM OR FIGURE OUT MY CAR IS GASOLINE ONLY. OHIO BMV WILL WILL ONLY GO ON WHAT NHTSA WEB SITE SAYS. IT APPARENTLY SAYS MY CAR COULD BE A HYBRID. AS I SAY NO PROBLEM WITH CAR BUT NHTSA HAS MISS CODED WHAT MY CAR IS. HAVE NOT BEEN ABLE TO GET ANY HELP FROM KIA YET.
Electrical system, Exterior lighting, Other or unspecified, Aug 2, 2020
WHILE DRIVING AT NIGHT LIGHTS WENT COMPLETELY OUT ON HIGHWAY WHILE IN AUTO MODE
Other or unspecified, Service brakes, Jan 22, 2020
3 TIMES INTERMITTENTLY BRAKE PEDAL ON MY 2018 KIA OPTIMA FROZE AND TO IT WONT BRAKE. NO LIGHTS CAME ON DASHBOARD. I HAVE ONLY 22.000 MILES ON IT. I TOOK THE CAR TO NEAREST KIA DEALER TWICE. ACCORDING TO THEM THEY ARE UNABLE TO DUPLICATE THE PROBLEM AND COMPUTER NOT READING ANY ERROR CODES VEHICLE UNSAFE TO DRIVE
Other or unspecified, Service brakes, Jan 9, 2020
RANDOMLY BRAKE PEDAL ON MY KIA OPTIMA FREEZES AND IM UNABLE TO APPLY AND STOP VEHICLE IT HAPPENED TWICE ONCE IT HAPPENED ON HWY AND ONCE ON CITY STREET. CURRENTLY VEHICLE IS IN DEALERSHIP SINCE JAN 2ND AND DEALER STATING THEY ARE UNABLE TO DUPLICATE ISSUE
Power train, Other or unspecified, Engine, Sep 9, 2019, fire
WHILE I WAS DRIVING MY VEHICLE ON THE STREETS; ITS AN 2018 KIA OPTIMA.ON AUGUST 2,2019 MY CAR ENGINE CAUGHT ON FIRE.PEOPLE WALKING ON THE SIDEWALK AND OTHER DRIVERS STOP TO ALERT ME THAT THEY SAW FIRE FROM THE BOTTOM OF THE CAR.THEN WHILE DRIVING I START TO NOTICE EXTREME SMOKE COMING FROM THE HOOD SO MUCH I COULDNT NO LONGER LOOK WHERE I WAS GOING.I PANICKED AND MIND WAS RACING Q HOW COULD THIS HAPPEN I GOT THIS CAR NEW LAST YEAR MAY 1,2018. WHEN I JUMPED OUT TO LOOK AT THE HOOD I SAW MY ENGINE ENGULFED WITH FLAMES.NEARBY DRIVER THREW ME A BOTTOLE OF WATER,LUCKILY I HAD JUST BOUGHT 24 CASE OF WATER, ANOTHER DRIVER PULLED OVER AND WAS HELPING ME POUR WATER TO REDUCE THE DAMAGE OF THE FIRE.NO ENGINE LIGHT WAS ON OR ANY OTHER WARNING LIGHTS BEFORE OR AFTER THE FIRE AND I HAD MY RECENTLY OIL CHANGE.
Vehicle speed control, Other or unspecified, Engine, May 31, 2019
WHEN I GOT IN MY CAR THE CHECK ENGINE CAN ON. I STARTED DRIVING MY CAR TO WORK, BECAUSE I WAS NOT SURE WHY THIS LIGHT CAME ON BECAUSE THIS WAS/IS A NEW CAR. I HAVE LESS THAN 19K MILES ON MY CAR. AS I ATTEMPTED TO GET ON THE HIGHWAY THE CAR REFUSED TO SPEED UP. THE MAX THAT I COULD DRIVE WAS 60 MPH. I HAD TO PULL OVER TO THE SIDE OF THE ROAD BECAUSE MY CAR WOULD NOT PICK UP SPEED. SO I CALLED THE SERVICE DEPARTMENT, WHO INFORMED ME THAT WHEN I BROUGHT MY CAR IN FOR AN OIL CHANGE IN JANUARY THAT THEY HAS PLACE A SAFTEY FEATURE ON MY CAR TO KEEP THE ENGINE FROM BLOWING UP. ACCORDING TO THE DEALERSHIP, THERE IS POSSIBLY SOMETHING WRONG WITH THE ENGINE, HOWEVER, THEY ARE STARTING OUT BY CHANGING THE WIRING FIRST. I CAN NOT EXPLAIN HOW DIFFERENT THIS DRIVES SINCE THE WIRES HAVE BEEN CHANGED. IT IS THE WORST DRIVE. THE CAR IS VERY LOUD IT DOES NOT PICK UP SPEED WHEN IT SHOULD AND IT DOES NOT SLOW DOWN AS FAST AS IT USE TO. NEEDLESS TO SAY, I AM HAVING ISSUES WITH THIS CAR AND SEEMINGLY EVERY TIME I TAKE IT IN FOR REPAIRS, THE CAR GETS WORST. I WILL NEVER EVER BUY A NEW/USED KIA AGAIN.
Electrical system, Other or unspecified, Jan 5, 2019
THIS HAS OCCURRED ON 3 TIMES SO FAR. I WAS AT A GAS STATION FILLING UP THE TANK, THE KEY WAS IN THE IGNITION, THE CAR WAS IN PARK, THE ENGINE WAS RUNNING, AND MY CAR DOOR WAS CLOSED. WHEN I FINISHED GETTING GAS, I TRIED TO OPEN THE DRIVER SIDE DOOR AND IT WAS LOCKED. ALL DOORS WERE LOCKED. I WAS 20 MILES FROM HOME FORTUNATELY SOMEONE WAS AT HOME TO BRING A SPARE KEY FOR ME TO OPEN THE TRUNK, PUSH THE REAR PASSENGER SEATS DOWN AND CLIMB THRU TO THE FRONT TO TURN THE IGNITION OFF AND UNLOCK THE DOOR. THE SAME SCENARIO OCCURED THIS PAST WEEK WHEN I HAD GONE OUTSIDE TO WARM UP MY CAR BY TURNING ON THE DEFROST FOR THE FRONT AND BACK WINDOWS. ONCE AGAIN, THE ENGINE WAS RUNNING AND I CLOSED THE DOORS. ONCE THE CAR WAS WARM, I TRIED TO OPEN THE DOOR AND IT WAS LOCKED. I HAD TO GO IN THE HOUSE TO GET THE OTHER SET OF KEYS, OPEN THE TRUNK PUSH THE BACK SEATS DOWN AND CLIMB THRU THE TO THE FRONT, TURN OFF THE IGNITION AND UNLOCK THE DOOR. THIS LAST OCCURENCE WAS ONCE AGAIN AT A GAS STATION, THIS TIME IT WAS LATE AT NIGHT, IT WAS 20 DEGREES OUTSIDE AND HAD TO WAIT FOR SOMEONE FROM MY HOUSE BRING THE SPARE KEYS. THE QUESTION I HAVE FOR MYSELF IS, WHAT AM I GOING TO DO IF NO ONE IS AT MY HOUSE TO BRING THE EXTRA KEY. SURELY, I DONT PLAN TO BRING TWO SETS OF KEYS WITH ME. EVERYTIME I'VE TAKEN IT TO THE KIAOFDAYTON SERVICE CENTER, I AM TOLD THEY CANNOT RECREATE THE ISSUE. I'VE TAKEN IT TO THE DEALERSHIP TWICE. IT'S VERY FRUSTRATING. IN EVERY INSTANCE THE CAR WAS IN PARK, THE ENGINE WAS RUNNING, AND THE DOORS WERE UNLOCKED WHEN I HAD EXITED THE VEHICLE. WHEN I ATTEMPTED TO GET BACK IN, I COULD NOT BECAUSE THE DOORS HAD LOCKED BY THEMSELVES.
Other or unspecified, Nov 28, 2018
THE VEHICLE IS STATIONARY. THERE IS NO EMERGENCY TRUNK RELEASE FROM THE INSIDE OF THE VEHICLE EXCEPT FROM INSIDE OF THE TRUNK. MY KEYS WERE STUCK INSIDE THE TRUNK THERE IS NO WAY TO OPEN IT. THE TRUNK RELEASE BUTTON FROM THE DRIVER SIDE DID NOT RESPOND. THE TRUNK RELEASE BUTTON FROM THE TRUNK ITSELF DOES NOT RESPOND. THE REAR SEATS CANNOT FOLD FROM THE INSIDE EITHER, BECAUSE IT CAN ONLY BE ACCESSED FROM THE TRUNK