Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
50–25K
1525–50K
3450–75K
3075–100K
20100–150K
8150K+
112 reports with mileage · 32 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Latches/locks/linkages. Review the 66 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Electrical System. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Air Bags. Review the 22 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
7 crash reports1 fire reports5 injury reports
What owners actually said
144 reports
27,000 miles · Jul 18, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THAT THE FRONT DRIVERS SIDE DOOR WOULD NOT UNLOCK FROM THE INTERIOR OR EXTERIOR, WITH OR WITHOUT THE KEY. THE CONTACT STATED THAT THE ONLY WAY TO ENTER THE DRIVERS SEAT WAS TO ENTER THE VEHICLE FROM THE FRONT PASSENGER SIDE. THE VEHICLE WAS NOT YET TAKEN TO HAVE THE FAILUR…
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TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THAT THE FRONT DRIVERS SIDE DOOR WOULD NOT UNLOCK FROM THE INTERIOR OR EXTERIOR, WITH OR WITHOUT THE KEY. THE CONTACT STATED THAT THE ONLY WAY TO ENTER THE DRIVERS SEAT WAS TO ENTER THE VEHICLE FROM THE FRONT PASSENGER SIDE. THE VEHICLE WAS NOT YET TAKEN TO HAVE THE FAILURE DIAGNOSED. THE FAILURE AND CURRENT MILEAGES WERE 27,000. UPDATED 09/01/2011 *LN
NHTSA ODI #10413340
97,000 miles · Jul 15, 2011
Unknown Or Other
KIA OPTIMA DOOR LOCK IS FAULTY, WILL NOT UNLOCK AND ONLY WAY TO GET DOOR OPEN IS TO USE A SLIM JIM (IF YOUR LUCKY) OR BREAK OPEN DOOR PANEL AND OPEN MANUALLY BY PULLING ON LOCKING MECHANISM. FAULTY PART IS A SMALL PLASTIC PART IN THE MECHANISM. THIS A VERY COMMON PROBLEM ON MANY KIA MODELS
NHTSA ODI #10412373
52,000 miles · Jul 11, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THE RIGHT FRONT PASSENGER DOOR WOULD NOT LOCK OR UNLOCK. THERE WAS A PASSENGER IN THE VEHICLE WHO WAS UNABLE TO GET OUT OF THE VEHICLE DUE TO THE DOOR LOCKS. THE DEALER STATED THERE WERE NO RECALLS OR RELATED WARRANTIES AND TO BRING THE VEHICLE IN TO BE INSPECTED. THE CONT…
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TL* THE CONTACT OWNS 2005 KIA OPTIMA. THE CONTACT STATED THE RIGHT FRONT PASSENGER DOOR WOULD NOT LOCK OR UNLOCK. THERE WAS A PASSENGER IN THE VEHICLE WHO WAS UNABLE TO GET OUT OF THE VEHICLE DUE TO THE DOOR LOCKS. THE DEALER STATED THERE WERE NO RECALLS OR RELATED WARRANTIES AND TO BRING THE VEHICLE IN TO BE INSPECTED. THE CONTACT WOULD BE RESPONSIBLE FOR THE REPAIR COST. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 52,000.
NHTSA ODI #10411716
69,000 miles · Jul 5, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THE DRIVERS SIDE DOOR WOULD NOT OPEN AUTOMATICALLY OR MANUALLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE AND CURRENT MILES WERE 69,000.
NHTSA ODI #10410442
75,000 miles · Jun 17, 2011
Latches/locks/linkages
I DRIVE A 2005 KIA OPTIMA. YESTERDAY WHEN I CAME OUT TO MY CAR THE DOOR WOULD NOT UNLOCK. EVERYTIME I PUT THE KEY IN AND ATTEMPT TO UNLOCK THE DOOR, IT LOCKS BACK IMMEDIATELY. I TRIED TO UNLOCK AND OPEN THE DOOR FROM THE INSIDE AS WELL BUT THE DOOR WILL NO LONGER OPEN. IN ORDER TO GET INTO OR OUT OF THE VEHICLE I HAVE TO USE THE…
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I DRIVE A 2005 KIA OPTIMA. YESTERDAY WHEN I CAME OUT TO MY CAR THE DOOR WOULD NOT UNLOCK. EVERYTIME I PUT THE KEY IN AND ATTEMPT TO UNLOCK THE DOOR, IT LOCKS BACK IMMEDIATELY. I TRIED TO UNLOCK AND OPEN THE DOOR FROM THE INSIDE AS WELL BUT THE DOOR WILL NO LONGER OPEN. IN ORDER TO GET INTO OR OUT OF THE VEHICLE I HAVE TO USE THE PASSENGER SIDE DOOR. THIS IS A MAJOR HAZARD IF I WERE TO BE INVOLVED IN AN ACCIDENT OR IF FOR SOME REASON I NEED TO EXIT MY CAR IMMEDIATELY. I HAVE 3 KIDS THAT I TRANSPORT ALSO AND AM TERRIFIED THAT SOMETHING SHOULD HAPPEN. I HAVE READ THE BLOGS THAT THIS IS A TYPICAL ISSUE BUT HAS NOT BEEN RECALLED YET. I AM GOING TO TAKE ANY ACTION POSSIBLE TO INSURE THAT THIS ISSUE IS RESOLVED SINCE IT IS A MALFUNCTION ON THE PART OF A KIA PART. *TR
NHTSA ODI #10407217
65,000 miles · Jun 15, 2011
Latches/locks/linkages
TL*THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THE FRONT DRIVERS SIDE DOOR WOULD NOT LOCK OR OPEN FROM THE INSIDE OR OUTSIDE OF THE VEHICLE. THE CONTACT HAD TO ENTER THE VEHICLE FROM THE PASSENGER DOOR. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHO STATED THE ACTUATOR NEEDED TO BE REPLACED. THE VIN WAS UNKNOWN. THE F…
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TL*THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THE FRONT DRIVERS SIDE DOOR WOULD NOT LOCK OR OPEN FROM THE INSIDE OR OUTSIDE OF THE VEHICLE. THE CONTACT HAD TO ENTER THE VEHICLE FROM THE PASSENGER DOOR. THE CONTACT TOOK THE VEHICLE TO THE DEALER WHO STATED THE ACTUATOR NEEDED TO BE REPLACED. THE VIN WAS UNKNOWN. THE FAILURE AND CURRENT MILEAGE WAS 65,000.
NHTSA ODI #10407014
98,000 miles · Jun 13, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT WHEN TRYING TO OPEN THE DRIVER SIDE DOOR WITH THE KEY, SHE WAS UNABLE TO DO SO. SHE HAD TO ENTER THE VEHICLE THROUGH THE PASSENGER SIDE DOOR OR NOT LOCK THE VEHICLE AT ALL. THE VEHICLE WAS INSPECTED BY A DEALER AND THEY ADVISED THAT SHE NEEDED TO REPLACE THE LOCK M…
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TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT WHEN TRYING TO OPEN THE DRIVER SIDE DOOR WITH THE KEY, SHE WAS UNABLE TO DO SO. SHE HAD TO ENTER THE VEHICLE THROUGH THE PASSENGER SIDE DOOR OR NOT LOCK THE VEHICLE AT ALL. THE VEHICLE WAS INSPECTED BY A DEALER AND THEY ADVISED THAT SHE NEEDED TO REPLACE THE LOCK MECHANISM. THE VEHICLE WAS NOT REPAIRED AND THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS APPROXIMATELY 98,000.
NHTSA ODI #10406152
145,000 miles · Jun 5, 2011
Latches/locks/linkages
I RECENTLY BOUGHT A 2005 KIA OPTIMA AND ABOUT THE FIFTH TIME I DROVE IT I WENT TO THE STORE AND WAS STUCK INSIDE THE DOOR WILL NOT LOCK OR UNLOCK FROM INSIDE OR OUT THEN FINALLY IT DOES BUT I NEVER KNOW WHEN ITS GOIN TO WORK OR NOT ..THIS IS CRAZY AND LOTS OF PEOPLE ARE HAVING PROBLEMS WITH THIS WHY HASN'T IT BEEN RECALLED. *…
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I RECENTLY BOUGHT A 2005 KIA OPTIMA AND ABOUT THE FIFTH TIME I DROVE IT I WENT TO THE STORE AND WAS STUCK INSIDE THE DOOR WILL NOT LOCK OR UNLOCK FROM INSIDE OR OUT THEN FINALLY IT DOES BUT I NEVER KNOW WHEN ITS GOIN TO WORK OR NOT ..THIS IS CRAZY AND LOTS OF PEOPLE ARE HAVING PROBLEMS WITH THIS WHY HASN'T IT BEEN RECALLED. *TR
NHTSA ODI #10404530
71,000 miles · Jun 3, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT AS THE VEHICLE WAS SHUT OFF, ALL FOUR DOORS BEGAN LOCKING AND UNLOCKING REPEATEDLY. THE CONTACT STATED THAT THE FAILURE WAS A CONSTANT OCCURRENCE. THE DEALER WAS MADE AWARE OF THE FAILURE AND ADVISED THAT THE CHECK SWITCH IN THE FRONT DRIVER SIDE DOOR WOULD NEED TO…
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TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT AS THE VEHICLE WAS SHUT OFF, ALL FOUR DOORS BEGAN LOCKING AND UNLOCKING REPEATEDLY. THE CONTACT STATED THAT THE FAILURE WAS A CONSTANT OCCURRENCE. THE DEALER WAS MADE AWARE OF THE FAILURE AND ADVISED THAT THE CHECK SWITCH IN THE FRONT DRIVER SIDE DOOR WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 71,000. THE VIN WAS NOT AVAILABLE.
NHTSA ODI #10404339
113,000 miles · May 24, 2011
Latches/locks/linkages
TL* THE CONTACT OWNS A 2005 KIA OPTIMA. THE CONTACT STATED THAT THE DRIVER DOOR WOULD NOT UNLOCK ELECTRONICALLY OR MANUALLY. THE VEHICLE WAS NOT TAKEN TO THE DEALER TO BE DIAGNOSED OR REPAIRED. THE FAILURE MILEAGE WAS 113,000 AND THE CURRENT MILEAGE WAS 113,000.
NHTSA ODI #10402506
Official recalls
0
No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
2
DP22003 · 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.
2005 Kia Optima Problems, Complaints & Recalls | Skip That Year
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