NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
144 reports110,000 miles · May 12, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THE FRONT DRIVER AND PASSENGER SIDE DOORS WOULD NOT LOCK OR UNLOCK FROM THE INTERIOR OR EXTERIOR OF THE VEHICLE. THE CONTACT STATED THAT HE WOULD HAVE TO CLIMB OVER THE FRONT SEAT AND CONSOLE TO EXIT THE VEHICLE THROUGH THE REAR DOORS. THE VEHICLE WAS NOT INSPECTED FOR THE…
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TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THE FRONT DRIVER AND PASSENGER SIDE DOORS WOULD NOT LOCK OR UNLOCK FROM THE INTERIOR OR EXTERIOR OF THE VEHICLE. THE CONTACT STATED THAT HE WOULD HAVE TO CLIMB OVER THE FRONT SEAT AND CONSOLE TO EXIT THE VEHICLE THROUGH THE REAR DOORS. THE VEHICLE WAS NOT INSPECTED FOR THE FAILURE. THE DEALER WAS CONTACTED AND ADVISED THAT THE FAILURE COULD POTENTIALLY HAVE BEEN CAUSED BY A DEFECT IN THE DOOR LOCK ACTUATOR. THE FAILURE MILEAGE WAS 110,000 AND THE CURRENT MILEAGE WAS 115,000.
NHTSA ODI #10400648
108,000 miles · May 12, 2011
Latches/locks/linkages
2005 KIA OPTIMA. DRIVER DOOR WON'T UNLOCK OR OPEN FROM INSIDE OR OUTSIDE. I HAVE TO CLIMB ACROSS THE PASSENGER SEAT TO GET IN OR OUT OF THE VEHICLE. THIS IS A HUGE SAFETY ISSUE, NOT TO MENTION WHAT IT IS DOING TO MY LOWER BACK. THE DEALER SAYS THEY CAN FIX IT FOR ABOUT $400 PLUS ABOUT $105 IN DIAGNOSTIC FEES. I SHOULD NOT B…
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2005 KIA OPTIMA. DRIVER DOOR WON'T UNLOCK OR OPEN FROM INSIDE OR OUTSIDE. I HAVE TO CLIMB ACROSS THE PASSENGER SEAT TO GET IN OR OUT OF THE VEHICLE. THIS IS A HUGE SAFETY ISSUE, NOT TO MENTION WHAT IT IS DOING TO MY LOWER BACK. THE DEALER SAYS THEY CAN FIX IT FOR ABOUT $400 PLUS ABOUT $105 IN DIAGNOSTIC FEES. I SHOULD NOT BE FINANCIALLY RESPONSIBLE FOR SOMETHING THAT IS OBVIOUSLY A SERIOUS PROBLEM WITH A LOT OF THE KIAS OUT THERE . THERE IS A LIST OF MANY OWNERS WHO ARE HAVING THE SAME PROBLEM. KIA NEEDS TO STEP UP AND TAKE CARE OF IT. IN THE EVENT OF AN ACCIDENT, I WILL NOT BE ABLE TO EXIT THE CAR QUICKLY OR SAFELY. THIS PROBLEM NEEDS TO BE ADDRESSED! *TR
NHTSA ODI #10400632
89,703 miles · Apr 11, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT THE POWER LOCKS MALFUNCTIONED, WHICH CAUSED THE DRIVER'S SIDE FRONT DOOR TO LOCK. THE DOOR COULD NOT BE REOPENED. THE CONTACT WOULD ENTER THE VEHICLE THROUGH THE PASSENGER SIDE OF THE VEHICLE AND CLIMB OVER THE CENTER CONSOLE. THE DEALER ADVISED THE CONTACT THAT T…
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TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT THE POWER LOCKS MALFUNCTIONED, WHICH CAUSED THE DRIVER'S SIDE FRONT DOOR TO LOCK. THE DOOR COULD NOT BE REOPENED. THE CONTACT WOULD ENTER THE VEHICLE THROUGH THE PASSENGER SIDE OF THE VEHICLE AND CLIMB OVER THE CENTER CONSOLE. THE DEALER ADVISED THE CONTACT THAT THE VEHICLE COULD NOT BE DIAGNOSED BECAUSE THE DRIVER SIDE DOOR WOULD NOT OPEN AND SUGGESTED THAT THE DOOR BE UNASSEMBLED AT THE CONTACTS EXPENSE. THE CONTACT STATED THE FAILURE WAS A MAJOR SAFETY ISSUE BECAUSE THE DOOR WOULD NOT OPEN IN THE EVENT OF A CRASH. THE FAILURE MILEAGE WAS 89,703.
NHTSA ODI #10395520
Mileage unknown · Mar 29, 2011
Latches/locks/linkages
I CAN'T OPEN MY DOOR!! MY DRIVERS SIDE DOOR REFUSES TO OPEN, FROM INSIDE OR OUT! I TRY TO UNLOCK IT FROM THE OUTSIDE AND WHEN I PULL ON THE LATCH, IT LOCKS THE DOOR AGAIN, AND IT WILL NOT OPEN FROM THE INSIDE, SOMETIMES RELOCKING THE DOOR ON ME. IT WAS WORKING JUST FINE BEFORE THEN, AND THEN ALL OF SUDDEN IT STARTED MALFUNCTIONI…
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I CAN'T OPEN MY DOOR!! MY DRIVERS SIDE DOOR REFUSES TO OPEN, FROM INSIDE OR OUT! I TRY TO UNLOCK IT FROM THE OUTSIDE AND WHEN I PULL ON THE LATCH, IT LOCKS THE DOOR AGAIN, AND IT WILL NOT OPEN FROM THE INSIDE, SOMETIMES RELOCKING THE DOOR ON ME. IT WAS WORKING JUST FINE BEFORE THEN, AND THEN ALL OF SUDDEN IT STARTED MALFUNCTIONING, NOTHING HAPPENED TO MAKE THIS HAPPEN. ONLY THE DRIVERS SIDE DOOR IS AFFECTED. THIS IS A SAFETY HAZARD AND I'M NOT THE ONLY ONE THIS HAS HAPPENED TO, THERE NEEDS TO BE A RECALL. I HAVE BEEN UNABLE TO GET THIS CORRECTED AS OF YET.
NHTSA ODI #10393590
59,000 miles · Mar 28, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT THE DOOR LOCKS BECAME DEFECTIVE AND WOULD SPORADICALLY CAUSE HER TO BECOME LOCKED INSIDE OR OUTSIDE OF THE VEHICLE. THE CONTACT STATED THAT SHE WOULD OFTEN HAVE TO CLIMB OUT OF THE WINDOWS TO EXIT THE VEHICLE. THE VEHICLE WAS NEITHER INSPECTED NOR REPAIRED FOR THE F…
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TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT THE DOOR LOCKS BECAME DEFECTIVE AND WOULD SPORADICALLY CAUSE HER TO BECOME LOCKED INSIDE OR OUTSIDE OF THE VEHICLE. THE CONTACT STATED THAT SHE WOULD OFTEN HAVE TO CLIMB OUT OF THE WINDOWS TO EXIT THE VEHICLE. THE VEHICLE WAS NEITHER INSPECTED NOR REPAIRED FOR THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED. THE CURRENT MILEAGE WAS 89,677 AND THE FAILURE MILEAGE WAS APPROXIMATELY 59,000.
NHTSA ODI #10393067
Mileage unknown · Feb 12, 2011
Latches/locks/linkages
DRIVERS SIDE DOOR WILL NOT UNLOCK FROM INSIDE VEHICLE OR OUTSIDE. THIS IS NOT ONLY EXTREMELY INCONVENIENT BUT ALSO VERY UNSAFE. LAST YEAR THE SAME ISSUE HAPPENED ON PASSENGER SIDE DOOR, WHICH I PAID TO HAVE FIXED AND NOW THE SAME ISSUE IS HAPPENING ON DRIVERS SIDE. KIA SHOULD TAKE RESPONSIBILITY FOR THIS DEFECT. *TR
NHTSA ODI #10381709
41,280 miles · Feb 9, 2011
Latches/locks/linkages
DRIVER DOOR OF KIA 2005 OPTIMA WILL NOT OPEN FROM THE INSIDE OR OUTSIDE AT ALL. HAVE TO CLIMB OVER PASSENGER SEAT TO GET TO DRIVERS SEAT. CALLED THE DEALERSHIP AND WAS TOLD THAT MOST LIKELY THE PART THAT IS BAD IS CALLED THE 'DOOR CHECKER' ACCORDING TO THE KIA MANUALS. I HAVE TO GET A NEW ONE. CALLED DEALERSHIP THERE WILL BE 2 …
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DRIVER DOOR OF KIA 2005 OPTIMA WILL NOT OPEN FROM THE INSIDE OR OUTSIDE AT ALL. HAVE TO CLIMB OVER PASSENGER SEAT TO GET TO DRIVERS SEAT. CALLED THE DEALERSHIP AND WAS TOLD THAT MOST LIKELY THE PART THAT IS BAD IS CALLED THE 'DOOR CHECKER' ACCORDING TO THE KIA MANUALS. I HAVE TO GET A NEW ONE. CALLED DEALERSHIP THERE WILL BE 2 HOURS OF LABOR INVOLVED. THE PART WEARS OUT TO THE POINT WHERE IT TELLS THE SYSTEM THAT THE DOOR IS NOT LATCHED SO IT TRIPS THE AUTO LOCK FEATURE TO KEEP THE DOOR FROM SWINGING OPEN. APPARENTLY THIS IS A DEALER PART ONLY. NOT COVERED UNDER WARRANTY. MY CAR ONLY HAS 41,000 MILES ON IT. *TR
NHTSA ODI #10381300
80,000 miles · Dec 29, 2010
Structure
TL*THE CONTACT OWNS A 2005 KIA OPTIMA LX. WHILE THE VEHICLE WAS IN THE IDLE POSITION, THE CONTACT WAS UNABLE TO OPEN THE DRIVER SIDE DOOR. HE COULD NOT OPEN IT FROM THE OUTSIDE WITH THE KEY OR EVEN USING THE HANDLE INSIDE THE VEHICLE. THE CONTACT HAD TO CLIMB OUT THE FRONT PASSENGER DOOR. THE VEHICLE HAD NOT BEEN REPAIRED. THE F…
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TL*THE CONTACT OWNS A 2005 KIA OPTIMA LX. WHILE THE VEHICLE WAS IN THE IDLE POSITION, THE CONTACT WAS UNABLE TO OPEN THE DRIVER SIDE DOOR. HE COULD NOT OPEN IT FROM THE OUTSIDE WITH THE KEY OR EVEN USING THE HANDLE INSIDE THE VEHICLE. THE CONTACT HAD TO CLIMB OUT THE FRONT PASSENGER DOOR. THE VEHICLE HAD NOT BEEN REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 80,000 AND THE CURRENT MILEAGE WAS APPROXIMATELY 89,000.
NHTSA ODI #10373308
57,000 miles · Dec 23, 2010
Service Brakes, Hydraulic
BRAKES TURNED TO SPONGE ON AT LEAST THREE SEPARATE OCCASIONS IN FALL 2009, AGAIN IN FEB 2010,SUMMER 2010 AND AGAIN 12/ 22/ 2010. AT FIRST OCCURRENCE WINTER OF 2009 I ASSUMED I HAD HIT ICE AND WAS UNABLE TO BRAKE FOR THAT REASON. HOWEVER, EVERY INCIDENT AFTER THAT CONFIRMED THAT ROAD CONDITION WAS NOT A CONTRIBUTING FACTOR. DURIN…
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BRAKES TURNED TO SPONGE ON AT LEAST THREE SEPARATE OCCASIONS IN FALL 2009, AGAIN IN FEB 2010,SUMMER 2010 AND AGAIN 12/ 22/ 2010. AT FIRST OCCURRENCE WINTER OF 2009 I ASSUMED I HAD HIT ICE AND WAS UNABLE TO BRAKE FOR THAT REASON. HOWEVER, EVERY INCIDENT AFTER THAT CONFIRMED THAT ROAD CONDITION WAS NOT A CONTRIBUTING FACTOR. DURING FIRST EVENT THE BRAKES WERE NOT FUNCTIONING,CAR CONTINUED TO MOVE FORWARD AT RED TRAFFIC LIGHT. BRAKE FAILURE RECURRED TWICE AT 4 WAY STOP AND AGAIN ON RESIDENTIAL STREET AS I AM PREPARING TO PARK. NOTE THAT THESE INCIDENTS ALL OCCURRED AS I WAS CONSCIOUSLY SLOWING THE VEHICLE AND PREPARING TO COME TO A FULL STOP. SPEED OF VEHICLE AT THE TIME OF ALL THE ABOVE INCIDENTS IS ESTIMATED LESS THAN OR EQUAL TO 15 MPH. WHAT WE HAVE HERE IS VEHICLE THAT RANDOMLY WILL NOT COME TO A COMPLETE STOP ALTHOUGH INSPECTION REVEALS BRAKES ARE IN GOOD WORKING ORDER AND TIRES ARE NEW. DEALER INSPECTED VEHICLE FEB 12, 2010 AFTER CAR WOULD NOT STOP AT STOP SIGN CONSEQUENTLY I WAS FORCED TO TURN THE CAR INTO SNOW BANK TO HALT VEHICLE. OTHERWISE I WOULD HAVE BROADSIDED ONCOMING TRUCK IN N/S 4 WAY. DEALER COULD NOT FIND ANYTHING AND EVENT DID NOT REOCCUR WHEN DEALER TEST DROVE VEHICLE. LAST NIGHT 12/22/2010 HAD TO THROW CAR INTO PARK AND TURN OFF ENGINE IN MID TRAFFIC AS OTHER VEHICLES ARE BRAKING BECAUSE OF RAPID CHANGE TO SLOW IN 45 MPH ZONE. MY CAR IS CLIMBING HILL AS CARS AHEAD ARE BREAKING FOR STALLED, SLOW TRAFFIC. RANDOM PROBLEM WITH BRAKES OCCURS MORE OFTEN AT LOW TEMP ALTHOUGH HAS OCCURRED ONCE IN SUMMER. NOTE TEMPERATURE AT EVENT LAST NIGHT 28F AT 6:30 PM. BRAKE FLUID TESTED GOOD ON FEB 12, 2010 AT INSPECTION. BRAKES WERE IN FINE WORKING ORDER, TIRES NEW. COMPUTER DIAGNOSTIC INSPECTION CHECKED OUT FINE. I REPORTED SUBSEQUENT BRAKE FAILURE EVENTS TO KIA (AFTER FEB 12, 2010) BUT AFTER CALLING KIA ON 12/23/10 I FIND THEY DID NOT RECORD SAID EVENTS IN KIA DATABASE ALTHOUGH I WAS ASSURED MY PHONED IN REPORTS IN WERE DOCUMENTED. *LN
NHTSA ODI #10372244
73,000 miles · Dec 20, 2010
Latches/locks/linkages
TL*THE CONTACT OWNS 2005 KIA OPTIMA LX/EX. THE DRIVERS SIDE DOOR WILL NOT OPEN WITH OR WITHOUT THE KEY. THE VEHICLE WAS TAKEN TO THE DEALER WHO STATED THAT THERE ARE NO RECALLS OR WARRANTIES AND IT WOULD COST $400 TO REPAIR THE FAILURE. THE MANUFACTURER WAS CONTACTED AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 73,000.
NHTSA ODI #10371770
NHTSA investigations
2DP22003 · Loss Of Motive Power
Opened Sep 12, 2022 · Closed Dec 12, 2023
Status: closed (inferred from source dates) · Engine
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at NHTSA.gov under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to NHTSA which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan assemblies of the subject vehicles. Based on a review of the available information, a loss of motive power resulting from an oil drain plug back out has not occurred between the initial sale of a vehicle and the completion of its first oil change. If during an oil change service, a technician fails to remove the existing drain plug gasket before installing a new gasket, it is likely that a proper seal between the drain plug and the oil pan will not be made. An improper seal between the drain plug and oil pan could lead to the backing out on the drain plug, resulting in the sudden loss of oil while driving. Additionally, the provided examples of oil pan cracks were localized to the immediate vicinity of the oil drain plug and/or appeared to be the result of direct-contact with a tool during servicing. There is no information to support that a vehicle-based defect exists relating to the oil pan assembly, and instead the documented incidents are related to the failure to follow the proper maintenance procedures during oil change service. In October 2023, Hyundai published a Technical Service Bulletin (TSB) that provided detailed instructions for oil change service on its gasoline powered vehicles, specifically highlighting the need to remove and replace the existing drain plug gasket prior to reinstalling the drain plug. After a thorough review of the material submitted by the petitioner, the information already in NHTSA's possession, and the potential risks to motor vehicle safety implicated by the petitioners' allegations, NHTSA does not believe that a formal investigation is warranted. Therefore, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA’s reasons for denial of the petition will be published. The reference numbers for the complaints to NHTSA cited by the petitioner can be found in the petition submission documents in the public file for DP22-003. To review those complaints and the additional complaints ODI added to its evaluation which are cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.
DP21003 · Throttle Control System Vulnerabilities
Opened Nov 12, 2021 · Closed Jun 20, 2023
Status: closed (inferred from source dates) · Vehicle Speed Control:throttle
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003. Accordingly, Model Year (MY) 2005-2016 Kia Optima/K5, MY 2006-2015 Kia Sorento, MY 2007-2016 Hyundai Elantra, MY 2007-2016 Hyundai Santa Fe, MY 2006-2015 Hyundai Sonatas are all part of the subject population. The petition was originally filed as a Vehicle Owner Questionnaire that can be reviewed at NHTSA.gov under reference (ODI) number 11439675.On November 12, 2021, ODI opened Defect Petition DP21-003 to evaluate the petitioner?s request. ODI performed trend analyses of the VOQs related to vehicle speed control issues for all the subject vehicles and found that none of the 52 Model/Model Year Hyundai/Kia vehicles demonstrated any actionable trend that warranted an investigation.Petitioners submitted 1119 VOQs and non-VOQ cases in which sudden uncommanded acceleration (SUA) or loss of motive power (LOMP) incidents were alleged.For the 1119 reports, 220 were incidents involving crashes, from which 69 subject Hyundai-Kia vehicles were inspected by Hyundai/Kia dealer technicians, Hyundai/Kia engineers, and/or third-party representatives.ODI found the inspections identified no vehicle defects related to the ETC system.Of the 220 crash-involved reports, 13 Event Data Recorder (EDR) records were downloaded successfully and 11 of those indicated driver error: (i.e.) pedal misapplication.A condition where the accelerator pedal is mistakenly applied instead of the brake pedal when the driver wants to stop the vehicle.In addition, ODI reviewed a scientific journal paper published in Forensic Science International in 2016 by Mr. Park et al ., as well as related test videos. ODI does not believe there is any evidence of uncontrollable SUA occurrences in any of the tests reviewed. NHTSA's Office of Vehicle Safety Compliance (OVSC) reviewed the allegations regarding the potential noncompliance with Federal Motor Vehicle Safety Standard No. 124.Based on the information provided, the Agency concludes there is insufficient information for us to determine if a possible non-compliance exists.Finally, both Hyundai and Kia informed ODI that all their vehicles manufactured after 2012 were equipped with an ETC management system, in which the engine speed will go to idle when the system sees signals from both the brake pedal and accelerator pedal at the same time; this is commonly known as the brake-throttle override system.After thoroughly assessing the material submitted by the petitioner, information already in NHTSA's possession, information submitted by Hyundai and Kia in response to an Information Request letter, and the potential risks to safety implicated by the petitioner's allegation, NHTSA does not believe that a formal investigation is warranted. After full consideration of appropriate factors, the petition is denied. A Federal Register Notice (FRN) further detailing NHTSA?s reasons for denial of the petition will be published.