There are 5 owner-reported powertrain & transmission complaints for the 2003 Kia Optimain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL*THE CONTACT OWNS A 2003 KIA OPTIMA. THE CONTACT STATED THAT THE DOOR LATCHES ON BOTH THE DRIVER AND PASSENGER SIDE WERE NOT FUNCTIONING PROPERLY; THE CONTACT WAS UNABLE TO OPEN THE DOORS TO GET IN OR OUT OF THE VEHICLE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHO STATED THAT THE LATCHES NEEDED TO BE REPLACED. THE CONTACT CALLED THE MANUFACTURER WHO STATED THAT SHE WOULD BE RESPONSIBLE FOR REPAIR COSTS. THE CONSUMER ALSO STATED THE CV JOINTS NEEDED TO BE REPLACED, BUT THE PARTS WERE NOT AVAILABLE. UPDATED 02/16/11 UPDATED 3/8/11 *CN
AFTER STOPPING AT A STOP SIGN I TRIED TO ACCELERATE AND TURN LEFT. MY CAR WOULD NOT "GO". SO I PRESSED THE ACCELERATOR HARDER AND IT FINALLY AND SLOWLY MOVED FORWARD. I HAVE AN AUTOMATIC TRANSMISSION, BUT IT WAS LIKE I WAS DRIVING A MANUAL AND HAD TRIED TO START IN 3RD GEAR INSTEAD OF 1ST. IT'S ALMOST LIKE MY CAR HAD TO CATCH UP FOR A MINUTE BEFORE IT WOULD GO. IT HAS HAPPENED SEVERAL TIMES SINCE THAT TO DIFFERENT DEGREES. IT IS A 2003 WITH ONLY 41,000 MILES AND NO LONGER UNDER WARRANTY SINCE I BOUGHT IT USED. I AM AFRAID IT WILL DO THIS ON THE INTERSTATE OR WHEN I AM TRYING TO MERGE AND COULD BE DANGEROUS. *TR
PURCHASED A 2003 KIA OPTIMA AND AFTER 3 MONTHS OF DRIVING VEHICLE, THE CLUTCH WENT OUT. I AM AN EXPERIENCED DRIVER AND HAVE BEEN DRIVING MANUAL TRANSMISSION VEHICLES FOR SEVERAL YEARS. *JB
WHILE TURNING IN EITHER DIRECTION THERE WAS HEAVY VIBRATION IN THE STEERING WHEEL. THE CONSUMER ALSO HEARD A LOUD CLICKING NOISE COMING FROM THE FRONT END OF THE VEHICLE. DEALERSHIP/MECHANIC INFORMED THE CONSUMER THAT THE PROBLEM WAS DUE TO CONSTANT VELOCITY JOINT FAILURE. DEALERSHIP MECHANIC DID NOT RESOLVE THE PROBLEM. *AK
I JUST BOUGHT THIS CAR AUGUST 14. THAT NIGHT IT WOULD NOT START. I HAVE NOT HAD THIS CAR OVER 4 HOURS AND PUT ABOUT 60 MILES ON IT.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026