There are 3 stored owner reports matching the powertrain & transmission leading-label group for the 2002 Kia Optima in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 3 of 3 matching reports.
Open the full vehicle complaint log (all categories)THERE WAS A SAFETY RECALL ON MY 2002 KIA OPTIMA REGARDING THE SUBFRAME. THE CORROSION UNDER MY CAR IS DEVASTATING. NHTSA NEEDS TO KNOW THAT THIS CORROSION PROBLEM IS EXTENSIVE AND AFFECTS MORE THEN THE SUBFRAME. KIA IS INSISTING THAT I PAY FOR THE DAMAGE THEY WILL CAUSE WHEN THEY HAVE TO REPLACE THE SUBFRAME. THIS IS A SAFETY HAZARD THAT WILL AFFECT THOUSANDS. *TR
2002 KIA OPTIMA SUB FRAME IS RUSTING OUT. CUSTOMER STATES THAT THE DEALER TOLD HER THERE WAS A SPOT ON THE SUB FRAME WHERE THE CONTROL ARM MOUNTS TO THE ENGINE CRADLE HAD RUSTED OUT AND IT LOOKED AS IF IT HAD BEEN IN AN ACCIDENT, AND WOULD NOT HELP WITH THE REPAIRS. *KB THE MECHANIC CONCLUDED THAT DUE TO THE DESIGN OF THE VEHICLE, THE CONDENSATION FROM THE AIR CONDITION RUNNING DOWN THE FRAME IS WHAT CAUSED THE RUST TO OCCUR. THE SPEED SENSOR FOR THE AUTOMATIC TRANSMISSION WAS REPLACED. *JB
I PURCHASED MY OPTIMA USED IN MAY 2004. ONE MONTH AFTER PURCHASE, I EXPERIENCED A HESITATION IN THE SHIFTING OF THE AUTOMATIC TRANSMISSION. I TOOK THE CAR BACK TO THE DEALER OF PURCHASE TO HAVE THE PROBLEM FIXED UNDER WARRANTY. THEY COULD NOT DUPLICATE THE PROBLEM, AND THEREFORE, APPARENTLY THEY CAN'T FIX IT EITHER. SINCE THEN, MY CAR HAS BEEN IN 2 DIFFERENT KIA DEALER SHOPS FOR THE EXACT SAME PROBLEM 4 OR 5 TIMES. WITH THE SAME RESULT: THEY CAN'T DUPLICATE THE PROBLEM, SO THEY CAN'T FIX IT. THE FOURTH TIME I TOOK IT IN, THEY COULDN'T DUPLICATE THE PROBLEM, BUT BECAUSE I CALLED CUSTOMER CARE, THEY DID CHECK ALL THE CONNECTORS FOR THE TRANSMISSION. I WAS ALSO INFORMED THAT NO CODES CAME UP FOR THE CAR AT ALL, BUT WHEN I TOOK IT TO AN INDEPENDENT MECHANIC, THERE WERE 4 CODES THAT CAME UP: THE SAME 2 TWICE. ONE SET WAS ON 'HOLD' AND THE OTHER SET HAD JUST OCCURRED THAT DAY. THE PROBLEM RECURRED THE DAY I PICKED UP THE CAR FROM THE DEALER, WHO'D HAD IT FOR A WEEK AND STILL COULDN'T DUPLICATE THE PROBLEM. THE FIFTH TIME I TOOK IT IN (IN DEC 2006), THE MECHANIC FINALLY WAS ABLE TO DUPLICATE THE PROBLEM, BUT MY WARRANTY RAN OUT 2,000 MILES BEFORE THIS. NOW THEY WON'T FIX IT UNDER WARRANTY. I HAVE CONTACTED CUSTOMER CARE AND WAS INFORMED THAT IT MIGHT GET FIXED UNDER WARRANTY IF I HAD A TRANSMISSION SERVICE AT 60,000 MILES. I'M NOT SURE WHY THAT EVEN MATTERS IF THE PROBLEM STARTED AT 48,000 MILES. PLUS, IN ALL THE CONTACT I HAVE HAD WITH ANY OF THESE PEOPLE, NOT A SINGLE ONE EVER RECOMMENDED OR REQUIRED A TRANSMISSION SERVICE. I WOULD NEVER RECOMMEND THIS MODEL CAR TO ANOTHER PERSON; NOT ONLY BECAUSE OF THE PROBLEMS, BUT BECAUSE OF THE SERVICE TECH'S WHO ARE RUDE AND UN-INFORMATIVE TO CUSTOMERS. *JB
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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.