Owner-reported complaints naming the engine system, filed with NHTSA
Data refreshed
Engine reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
9
Latest Feb 3, 2025
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
6%
of 141 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
2
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
1
What this page shows
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2003 Kia Optima submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 9 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Owner reports naming engine
Shown in the owner’s own words, exactly as filed
EngineSteeringSuspension
Filed Feb 3, 2025
While driving on the roadway, I was almost to a four way intersection, as i was going to get into the left turn lane, I turned the steering wheel slightly to the left as the steering wheel turned but the car almost did little adjusting to turn into the left turn lane. As this occurred you could here a noise underneath the vehicle . As I wasn't sure exactly what had happened, I attempted to limp the vehicle down the road to a friend's. As I did the steering got worse and as I could nearly stear the vehicle something was in the road which because of the steering I couldn't avoid it as it was late at night and raining and I ran over something that gave me a flat on the passenger side front tire . I got to my friends drive a few feet away and almost didn't get it pulled in because of the steering. As I took a look at my car, I noticed that two bolts on the driver side on the rack and pinion were almost about to fall out, two ball joints were bent and one nut was completely missing from the lower ball joint, as well as the sway bar was out of place and If I would have been driving down the highway, I do belive I would have wrecked.
NHTSA ID
11640256
Incident
Feb 1, 2025
AirbagsElectricalEngine
Filed Nov 9, 2015
AFTER 60,000 MILES, WHILE DRIVING OR WITH THE ENGINE RUNNING, THE ENGINE LIGHT CAME ON AND STAYED ON. THIS HAS BEEN REPAIRED THREE TIMES BY REPLACING A MAIN FUSE. EACH TIME IT HAS BEEN REPAIRED, THE PROBLEM HAS REOCCURRED. IN CONNECTION WITH THIS PROBLEM, THE DOOR WILL LOCK AFTER THE DRIVER EXITS THE CAR. SOMETIMES, THE KEYS HAVE BEEN LOCKED IN THE CAR.
NHTSA ID
10789284
Incident
Apr 15, 2010
Mileage
60,000 mi
Engine
Filed Sep 7, 2010
TL*THE CONTACT OWNS A 2003 KIA OPTIMA. WHENEVER THE CONTACT ATTEMPTED TO USE THE AIR CONDITIONER HE NOTICED THAT THE VEHICLE BEGAN TO RUN HOT WITHOUT WARNING. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHERE THE RADIATOR AND TUBING WERE REPLACED ; HOWEVER, 2 WEEKS AFTER THE REPAIR THE CONTACT CONTINUED TO EXPERIENCE THE FAILURE. THE FAILURE MILEAGE WAS 89000 AND THE CURRENT MILEAGE WAS 90000.
NHTSA ID
10354157
Incident
Jul 7, 2010
Mileage
89,000 mi
ElectricalEngine
Filed Apr 2, 2007
TL*- THE CONTACT STATED THAT THE 2003 KIA OPTIMA'S WITH 50000 FAILURE MILEAGE LIGHTS, LOCKS, RADIO DID NOT WORK. THE VEHICLE WOULD NOT START. THE VEHICLE WAS TOWED TO THE DEALER MULTIPLE TIMES. THE DEALER INSTALLED A NEW ENGINE. THE VEHICLE DID NOT WORK PROPERLY. THE CURRENT MILEAGE WAS 56,000.*AK
NHTSA ID
10186713
Incident
Sep 1, 2006
Mileage
50,000 mi
Engine
Filed Nov 21, 2005
Fire reported
2003 KIA OPTIMA WITH 70,000 MILES JUST BURST INTO FLAMES AND BURNED TOTALLY UP WHILE DRIVING DOWN THE ROAD. FIRE STARTED SOMEWHERE IN ENGINE COMPARTMENT PER THE FIRE DEPARTMENT. VEHICLE WAS RUNNING FINE PRIOR TO INCIDENT. VERY DANGEROUS SITUATION FOR PASSENGERS AND SURROUNDING PROPERTY. *JB
NHTSA ID
10143300
Incident
Nov 19, 2005
Mileage
70,000 mi
EngineTransmission
Filed Jan 24, 2005
I WAS DRIVING MY 2003 KIA OPTIMA ON I85 AT 65 MPH WHEN THE VEHICLE SUDDENLY LOST POWER AND SLOWED QUICKLY TO LESS THAN 10 MPH. THE VEHICLE CONTINUED TO SPUTTER AND BACKFIRE UNTIL I WAS FORCED TO PULL OVER AND WAIT APPROXIMATELY. 15 MINUTES BEFORE PROCEEDING NORMALLY. MY WIFE HAS ALSO EXPERIENCED THE SAME PROBLEMS AND IS AFRAID OF BEING INVOLVED IN AN ACCIDENT. THE VEHICLE HAS BEEN IN THE SHOP FOR THIS ISSUE 4 TIMES. THE LAST REPAIR INVOLVED PARAMOUNT KIA IN HICKORY WHERE THE MECHANIC REPLACED MANY OF THE ASSUMED PROBLEM PARTS SUCH AS FAULTY WIRING HARNESS, ECM, MAF SENSOR AND FUEL PUMP WITHOUT RESOLVE. THE SERVICE DEPARTMENT STATED THAT THEY HAD NO IDEA ON HOW TO FIX THE PROBLEM. *NM
NHTSA ID
10107846
Incident
Dec 27, 2004
Mileage
33,000 mi
Engine
Filed Jun 15, 2004
IT WAS RAINING HARD IN OUR AREA( 1 INCHES IN 1 OUR). I LIVE 3 MILES IN ON A COUNTY DIRT ROAD AND IT WAS MUDDY WITH STANDING WATER. WHEN ALL THE WATER AND MUD WAS SPLASTED IN THE ENGINE COMPARTMENT THE WAS IDLEING ROUGH. THIS IS THE (2) SECOND TIME THIS HAPPENED. THE FIRST TIME WAS ABOUT 2 MONTHS AGO IN APRIL WHEN WE HAD SAME TYPE OF WEATHER. TOOK THE CAR TO MY DEALER SERVICE DEPT AND WAS TOLD THEY COULD NOT FIND NOTHING WRONG AND THAT I HAD WATER IN MY GAS. I PUT ATLEAST TWO BOTTLES OF DRY GAS IN TANK. CAR RAN FINE UNTIL THE EVEING OF 6/14/03 WHEN AGAIN WE HAD ALOT OF RAIN AND THE SAME 3 MILE WET, MUDDY, STANDING WATER DIRT ROAD. *AK
NHTSA ID
10075412
Incident
Jun 14, 2004
Mileage
33,335 mi
Engine
Filed Oct 28, 2003
Crash reported1 injury reported
WHILE DRIVING 55 MPH ON THE HIGHWAY, CONSUMER LOST CONTROL OF VEHICLE AND HIT THE GUARD RAIL. THE DRIVER WAS INJURED AND TRANSPORTED BY AMBULANCE TO THE HOSPITAL. INJURIES UNKNOWN AT THIS TIME. A POLICE REPORT WAS TAKEN AND THE VEHICLE WAS TOWED TO THE DEALER FOR ANALYSIS. MECHANIC DETECTED BOTH FRONTAL UPPER BALL JOINTS CRACKED. *AK
NHTSA ID
10044891
Incident
Oct 28, 2003
Mileage
11,000 mi
Driver assistanceEngine
Filed Feb 4, 2003
THE ACCELERATOR PEDAL STICKS AND THE VEHICLE RANDOMLY STARTS. *JG PH
NHTSA ID
10004562
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Other components reported on this vehicle
Categories with enough reports to have a page of their own