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2015 Kia Optima

Owner reports · Recalls · Investigations

More warning signs than most Optima years

Owner complaints for the 2015 Kia Optima are substantially higher than the model-year median of 186.5.

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When problems were reported

Mileage at the reported incident

493 reports with mileage · 514 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.

  • Engine. Review the 621 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 135 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Structure. Review the 76 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

31 crash reports74 fire reports20 injury reports

What owners actually said

1,007 reports
Mileage unknown · Jun 5, 2018
Engine

I WAS DRIVING ON THE STREET AND WITH NO WARNING MY CAR STALLED AND SHUT OFF. I TURNED MY CAR BACK ON AND IT WAS OKAY, NO LIGHTS OR NOISES. THE NEXT DAY I WAS GOING TO DRIVE MY CAR I HEARD A TAPPING NOISE COMING FROM THE RIGHT PASSENGER SIDE NEAR THE ENGINE, BUT CAR STILL WAS FUNCTIONAL. A FEW HOURS LATER THE CHECK ENGINE LIGHT C…

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I WAS DRIVING ON THE STREET AND WITH NO WARNING MY CAR STALLED AND SHUT OFF. I TURNED MY CAR BACK ON AND IT WAS OKAY, NO LIGHTS OR NOISES. THE NEXT DAY I WAS GOING TO DRIVE MY CAR I HEARD A TAPPING NOISE COMING FROM THE RIGHT PASSENGER SIDE NEAR THE ENGINE, BUT CAR STILL WAS FUNCTIONAL. A FEW HOURS LATER THE CHECK ENGINE LIGHT CAME ON, THE NOISE IS STILL THERE.

NHTSA ODI #11100062

89,000 miles · May 30, 2018
Engine

ENGINE LOCKED UP WITHOUT ANY WARNING WHILE DRIVING DOWN ROAD NO PRIOR ISSUE

NHTSA ODI #11098769

8,000 miles · May 28, 2018
Steering

AT HIGHWAY SPEED THE CAR SEEMS TO WANDER BOTH LEFT AND RIGHT AND WHEN ATTEMPTING TO CORRECT THE STEERING WHEEL WILL "STICK" AND REQUIRES ABNORMAL AMOUNT OF EFFORT TO GET IT TO RESPOND TO DRIVER INPUT. ONCE IT RESPONDS IT OVER CORRECTS SLIGHTLY WHICH CAUSES TO CAR TO WEAVE (WITHIN IT'S LANE). THE CAR NOW REQUIRES CONSTANT DRIVE…

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AT HIGHWAY SPEED THE CAR SEEMS TO WANDER BOTH LEFT AND RIGHT AND WHEN ATTEMPTING TO CORRECT THE STEERING WHEEL WILL "STICK" AND REQUIRES ABNORMAL AMOUNT OF EFFORT TO GET IT TO RESPOND TO DRIVER INPUT. ONCE IT RESPONDS IT OVER CORRECTS SLIGHTLY WHICH CAUSES TO CAR TO WEAVE (WITHIN IT'S LANE). THE CAR NOW REQUIRES CONSTANT DRIVER INPUT TO KEEP THE CAR WITHIN IT'S LANE. WE BOUGHT THE CAR NEW IN LATE 2016 AND DON'T DRIVE IT A LOT AS IT NOW HAS ONLY 11,000 MILES AND THIS PROBLEM HAS GOTTEN PROGRESSIVELY WORSE SINCE ABOUT 5,000 MILES.

NHTSA ODI #11098299

110,474 miles · May 24, 2018
Engine

2015 KIA OPTIMA WAS GOING THROUGH 2 QUARTS OF OIL AT LEAST 3 TIMES A WEEK BLOWING OUT WHITE SMOKE. HAD ENGINE REPLACED UNDER 100K WARRANTY AT 98,844K. AT 110,474 MILES ENGINE BROKE DOWN WHILE DRIVING ON HIGHWAY. MANAGED TO GET CAR TO SHOULDER AND WOULD ONLY DRIVE 5 MILES AN HOUR. KIA SERVICE DEPARTMENT STATED NEEDS NEW ENGINE AN…

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2015 KIA OPTIMA WAS GOING THROUGH 2 QUARTS OF OIL AT LEAST 3 TIMES A WEEK BLOWING OUT WHITE SMOKE. HAD ENGINE REPLACED UNDER 100K WARRANTY AT 98,844K. AT 110,474 MILES ENGINE BROKE DOWN WHILE DRIVING ON HIGHWAY. MANAGED TO GET CAR TO SHOULDER AND WOULD ONLY DRIVE 5 MILES AN HOUR. KIA SERVICE DEPARTMENT STATED NEEDS NEW ENGINE AND CATALYTIC CONVERTER. STATES NOT IN WARRANTY. KIA CORPORATE ADVISED WE HAVE 12 MONTH/12K WARRANTY ON NEW ENGINE MEANING THERE IS APPROX 1100 MILES REMAINING UNDER WARRANTY. KIA DEALERSHIP NOW SAYS THAT THE ORIGINAL WARRANTY FOR THE CAR OF 100K IS WHAT WAS COVERED FOR THE NEW ENGINE AS WELL, MEANING THE WARRANTY FOR THE NEW ENGINE LASTED APPROX 1100. THEY ARE MORE CONCERNED ABOUT THE RENTAL CAR THEY PROVIDED AND REIMBURSEMENT FOR THAT THEN THE ENGINE ISSUE.

NHTSA ODI #11097777

33,386 miles · May 18, 2018
EngineFire

TL* THE CONTACT OWNS A 2015 KIA OPTIMA. WHILE DRIVING 65 MPH, THE CONTACT HEARD A CLANKING SOUND AS THE VEHICLE ACCELERATED. THE VEHICLE STALLED AND THICK, BLACK SMOKE EMERGED FROM THE ENGINE. THERE WERE NO WARNING INDICATORS ILLUMINATED DURING THE FAILURE. KIA ROADSIDE ASSISTANCE TOWED THE VEHICLE TO HUDSON KIA (36 WATER ST, JE…

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TL* THE CONTACT OWNS A 2015 KIA OPTIMA. WHILE DRIVING 65 MPH, THE CONTACT HEARD A CLANKING SOUND AS THE VEHICLE ACCELERATED. THE VEHICLE STALLED AND THICK, BLACK SMOKE EMERGED FROM THE ENGINE. THERE WERE NO WARNING INDICATORS ILLUMINATED DURING THE FAILURE. KIA ROADSIDE ASSISTANCE TOWED THE VEHICLE TO HUDSON KIA (36 WATER ST, JERSEY CITY, NJ 07305) WHERE IT WAS DIAGNOSED THAT THE ENGINE FAILED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 33,386. *TT CONSUMER STATED THIS WAS REPORTED TO THE MANUFACTURER ON 5/11/18, SERVICE REPORT STATES ENGINE DEFECT AND EVAP CANISTER RECALL WHICH DOES NOT SHOW UP ANYWHERE. UPDATED 9/21/18*JB

NHTSA ODI #11096681

Mileage unknown · May 3, 2018
Steering

THE VEHICLE WAS PURCHASED NEW IN 2015, THE STEERING BOX ON THIS VEHICLE WAS REPLACED IN NOVEMBER 2016 UNDER WARRANTY AS THE STEERING WHEEL WOULD HAVE A HESITATION (FELT LIKE A BRIEF STICKING) REGARDLESS OF DRIVING CONDITIONS BUT MORE DANGEROUS AT HIGHWAY SPEEDS. NOW MAY 2018 I AM HAVING TO HAVE IT REPLACED AGAIN AS THE STEERIN…

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THE VEHICLE WAS PURCHASED NEW IN 2015, THE STEERING BOX ON THIS VEHICLE WAS REPLACED IN NOVEMBER 2016 UNDER WARRANTY AS THE STEERING WHEEL WOULD HAVE A HESITATION (FELT LIKE A BRIEF STICKING) REGARDLESS OF DRIVING CONDITIONS BUT MORE DANGEROUS AT HIGHWAY SPEEDS. NOW MAY 2018 I AM HAVING TO HAVE IT REPLACED AGAIN AS THE STEERING IS VERY LOOSE AND WANDERS FOR NO REASON, AGAIN, REGARDLESS OF DRIVING CONDITIONS BUT MORE UNPREDICTABLE AT HIGHWAY SPEEDS AND REQUIRES A GREAT DEAL OF CONCENTRATION TO KEEP THE VEHICLE IN THE LANE. THE VEHICLE IS 36 MONTHS OLD WITH 78000 MILES AND IS HAVING THE 3RD STEERING BOX INSTALLED. THE TECHNICIAN HAS DEEMED MY VEHICLE UNSAFE TO DRIVE AND STATED THAT THE TECH SUPPORT FROM KIA ACTED AS THOUGH THEY WEREN'T SURPRISED. I DO NOT FEEL COMFORTABLE DRIVING THIS CAR KNOWING THAT THIS MECHANISM IS FAILING AT AN UNSAFE RATE. KIA KNOWS OF THIS PROBLEM AND APPARENTLY FEELS FINE WITH IT THOUGH THEY DEEM THE CAR UNSAFE TO DRIVE DUE TO A PART THAT THEY KNOWINGLY ARE INSTALLING IN THESE VEHICLES. A BRIEF SEARCH ON THE INTERNET (GOD LOVE THE INTERNET) WILL REVEAL THAT THIS IS A PROBLEM THAT MANY PEOPLE ARE HAVING. PLEASE LOOK INTO THIS, THESE VEHICLES ARE UNPREDICTABLE ON THE ROAD AND BY THEIR OWN ADMISSION UNSAFE. MY CASE NUMBER WITH KIA FOR THIS PROBLEM IS 12711641

NHTSA ODI #11091531

100,000 miles · May 2, 2018
Engine

TL* THE CONTACT OWNS A 2015 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS ABLE TO COAST TO THE SIDE OF THE ROAD. THE VEHICLE WAS ABLE TO RESTART, BUT FAILED TO ACCELERATE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE ENGINE FAILED. THE CON…

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TL* THE CONTACT OWNS A 2015 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 65 MPH, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS ABLE TO COAST TO THE SIDE OF THE ROAD. THE VEHICLE WAS ABLE TO RESTART, BUT FAILED TO ACCELERATE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE ENGINE FAILED. THE CONTACT WAS ADVISED TO TAKE THE VEHICLE TO A KIA DEALER. THE VEHICLE WAS LATER TOWED TO KIA AUTO TEAM DELAWARE (1603 PENNSYLVANIA AVE, WILMINGTON, DE 19806, (877) 364-9441) WHERE IT WAS DIAGNOSED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND A CASE WAS OPENED. THE APPROXIMATE FAILURE MILEAGE WAS 100,000.

NHTSA ODI #11091350

46,000 miles · Apr 25, 2018
Fuel/propulsion System

MY 2015 KIA OPTIMA WITH 46,000 MILES STARTED SMOKING AND RUNNING ROUGHLY; I BROUGHT IT TO THE DEALERSHIP WHERE THE SERVICE MANAGER THEN GUNNED THE ENGINE VERY HARD UNTIL THE ENGINE SEIZED UP. LATER THEY TOLD ME THE ENGINE NEEDED REPLACEMENT FOR 7K AND THEY WOULD NOT COVER IT BECAUSE I DID NOT GET OIL CHANGES WITH THEM. I TOLD TH…

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MY 2015 KIA OPTIMA WITH 46,000 MILES STARTED SMOKING AND RUNNING ROUGHLY; I BROUGHT IT TO THE DEALERSHIP WHERE THE SERVICE MANAGER THEN GUNNED THE ENGINE VERY HARD UNTIL THE ENGINE SEIZED UP. LATER THEY TOLD ME THE ENGINE NEEDED REPLACEMENT FOR 7K AND THEY WOULD NOT COVER IT BECAUSE I DID NOT GET OIL CHANGES WITH THEM. I TOLD THEM I CHANGE MY OWN OIL OR GET IT DONE AT A LOCAL PLACE IN TOWN BECAUSE I DON'T FEEL LIKE WAITING FOR 3-4 HOURS FOR OIL CHANGES AT THE KIA IN GLENDALE CA WHERE BTW THE SERVICE IS TERRIBLE. THIS ENGINE SHOULD BE RECALLED LIKE THE OTHERS; IT IS NOT A PRODUCTION DEFECT IT IS AN ENGINEERING DEFECT AND THE SOONER KIA RECOGNIZES THAT THE LESS LIABILITY THEY WILL BE RESPONSIBLE FOR. THIS COMPANY IS A REAL DISAPPOINTMENT AND I HOPE THEY WILL MOVE TO A VOLUNTARY RECALL AND NOT PUT ALL THEIR CUSTOMERS THROUGH HELL WAITING FOR THE GOVERNMENT TO FORCE THEM. I SPEAK NOTHING BUT NEGATIVELY ABOUT THESE CARS SO OTHER PEOPLE WON'T BE IN THE POSITION I AM IN.

NHTSA ODI #11090116

95,000 miles · Apr 23, 2018
Engine

THIS HAS BEEN A GREAT CAR UNTIL SUDDENLY I SAW SMOKE. CHECKED MY OIL & IT WAS LOW. I ADDED OIL. I BEGAN TO HEAR RATTLING IN THE ENGINE AND HUGE WHITE PUFFS OF SMOKE EMIT FROM MY ENGINE, SO BAD THAT CARS BEHIND ME ON THE FREEWAY (ALL 4 LANES) HIT THEIR BRAKES AS THEY CANNOT SEE. THE 101 FREEWAY DURING RUSH HOUR - THIS IS VERY BAD…

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THIS HAS BEEN A GREAT CAR UNTIL SUDDENLY I SAW SMOKE. CHECKED MY OIL & IT WAS LOW. I ADDED OIL. I BEGAN TO HEAR RATTLING IN THE ENGINE AND HUGE WHITE PUFFS OF SMOKE EMIT FROM MY ENGINE, SO BAD THAT CARS BEHIND ME ON THE FREEWAY (ALL 4 LANES) HIT THEIR BRAKES AS THEY CANNOT SEE. THE 101 FREEWAY DURING RUSH HOUR - THIS IS VERY BAD AND COULD GET SOMEONE KILLED, INCLUDING ME IF MY ENGINE SEIZES AT 75 MPH. I CHECK MY OIL EVERY OTHER DAY OR SO AND SEEMS TO BE LOW ONCE A WEEK. I'VE BEEN WAITING TO DROP MY CAR AT MY MECHANIC. WHEN I GOT THERE HE SAID HE COULD NOT TOUCH MY CAR DUE TO THE SAME EXACT REASON FOR OVER 1.2 MILLION RECALLED ENGINES. I WENT TO BRAKE MASTERS DOWN THE ROAD ASKING IF THEY KNOW ANYTHING ABOUT THIS AND THEY SAID "ABSOLUTELY!" THEY TOLD ME DO NOT DO AN OIL CHANGE AS MANY PEOPLE'S ENGINE SEIZES WITHIN A DAY OR SEVERAL DAYS AFTER AN OIL CHANGE. DEALERS CONSISTENTLY TELL PEOPLE THEIR ENGINE HAS "SLUDGE" IN IT. REALLY? I HAVE READ SO MANY REVIEWS OF THE SAME DIAGNOSIS. TELLING PEOPLE IT IS $6,000-$8,000 FOR A NEW ENGINE AT THEIR COST. BOTH MY MECHANIC AND BRAKE MASTERS TOLD ME THAT THEY FEEL THE ONLY REASON MY ENGINE HAS NOT SEIZED ON ME IS BECAUSE I TOOK NOTICE THAT MY ENGINE SOUNDED SLIGHTLY DIFFERENT. NOT ONE TIME HAS A LIGHT GONE OFF ON MY CAR. THERE IS NO REASON WHY A DASH WARNING LIGHT DOES NOT GO OFF WHILE LOOSING POWER AND BURNING OIL SO BAD THAT PEOPLE CANNOT SEE. SO, WE HAVE TWO ISSUES..... #1 OBVIOUS FAILURE OF DASH WARNING/ENGINE WARNING LIGHTS AND #2 THE BURNING OIL, METAL SHARDS RUINING MY ENGINE. I AM A SINGLE MOM AND DO NOT GET CHILD SUPPORT. I DON'T HAVE A SAVINGS ACCOUNT AND COULD NOT AFFORD TO REPLACE AN ENGINE. I AM VERY GOOD WITH MY VEHICLES AND WHAT I AM READING IS UNACCEPTABLE. SO MANY PEOPLE ARE PAYING FOR NEW ENGINES AND I WILL NOT BE ONE OF THEM. PLEASE HELP ME AS THIS ENGINE ISSUE IS NOT A LACK OF CARE

NHTSA ODI #11089647

63,800 miles · Apr 12, 2018
Engine

2015 KIA OPTIMA. DROVE OUT OF MY PARKING LOT AND MY CAR JUST CUT OFF AFTER I TURNED THE CORNER AT 4:30 IN THE MORNING HEADING TO WORK. TRIED TO START IT AGAIN IT STARTED AND CUT RIGHT BACK OFF. HAD IT TOWED TO THE KIA DEALER IN FREDERICK. THE DEALER CALLED ME AND SAID THAT MY ENGINE FAILED BECAUSE IT DIDN'T HAVE ANY OIL IN IT AN…

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2015 KIA OPTIMA. DROVE OUT OF MY PARKING LOT AND MY CAR JUST CUT OFF AFTER I TURNED THE CORNER AT 4:30 IN THE MORNING HEADING TO WORK. TRIED TO START IT AGAIN IT STARTED AND CUT RIGHT BACK OFF. HAD IT TOWED TO THE KIA DEALER IN FREDERICK. THE DEALER CALLED ME AND SAID THAT MY ENGINE FAILED BECAUSE IT DIDN'T HAVE ANY OIL IN IT AND IT HAD SLUDGE AND A CRACK IN THE ENGINE. I WAS FURTHER TOLD THAT I NEEDED TO BRING ALL OF MY OIL CHANGE RECEIPTS TO PROVE I WAS GETTING MY OIL CHANGED. MY CAR IS NOT EVEN 3 YEARS OLD. THE WARRANTY CLEARLY STATES THAT YOU ARE COVERED 10YEARS OR 100,000 MILES WHICHEVER COMES FIRST. KIA IS NOT WILLING TO HONOR THEIR WAIRRANTY WHICH IS DEAD WRONG. GOT A CALL TODAY STATING THAT IT WAS GOING TO COST $7200 TO FIX MY ENGINE. LAST TIME I CHECKED I WAS NOT RELATED TO ROCKEFELLER. PEOPLE JUST DON'T GO AROUND DELIBERATELY CRACKING ENGINES. THIS CAR NEEDS TO BE RECALLED. HOW WAS IT RECALLED FROM 2011-2014 SKIPPED 2015 AND RECALLED AGAIN IN 2016. I'VE BEEN DOING MY HOMEWORK WITH THIS SITUATION AND THERE HAVE BEEN 98 COMPLAINTS ABOUT THE 2015 KIA OPTIMA WHICH 48 OF THEM WHERE ABOUT THE ENGINE AND KIA NOR NHTSA HAD INVESTIGATED ANY OF THEM. THAT'S BECAUSE THEY DO NOT WANT TO FIX THERE ISSUES THAT THEY KNEW ABOUT PRIOR TO IT HAPPENING. THIS IS A TRUE SAFETY HAZARD AND SOMETHING MUST BE DONE ABOUT IT. IT IS NOT FAIR THAT WE PAY SO MUCH MONEY FOR A CAR AND THEN WHEN SOMETHING HAPPENS TO IT YOU CAN'T EVEN GET IT FIXED. BUT I BET IF IT WAS ONE OF THOSE CORPORATE PEOPLES CARS THEY WOULD HAVE NO PROBLEM HONORING THE WARRANTY OR BETTER YET GIVING THEM A NEW CAR.

NHTSA ODI #11084819

Official recalls

4

23V652000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Sep 25, 2023

Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

Consequence & remedy

Consequence: An engine compartment fire while parked or driving can increase the risk of injury.

Remedy: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.

21V331000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

May 10, 2021

Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Consequence & remedy

Consequence: An electrical short in the HECU increases the risk of a fire while parked or driving.

Remedy: Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if necessary, free of charge. Owner notification letters were mailed on July 2, 2021. This recall supersedes previous NHTSA recall number 20V-519. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC212.

20V519000 · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

Aug 27, 2020

Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

Consequence & remedy

Consequence: If the HECU short circuits, there is an increased risk of an engine compartment fire.

Remedy: Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge. Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. The recall began October 20, 2020. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC197.

18V907000 · Engine; Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

Dec 19, 2018

Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.

Consequence & remedy

Consequence: A fuel leak in the presence of an ignition source can increase the risk of a fire.

Remedy: Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.

Additional source detail variants (2)

Engine

Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.

Consequence: A fuel leak in the presence of an ignition source can increase the risk of a fire.

Remedy: Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.

Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.

Consequence: A fuel leak in the presence of an ignition source can increase the risk of a fire.

Remedy: Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.

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

4

AQ23002 · Hyundai And Kia Abs Module Fires

Opened Nov 17, 2023 · No close date supplied

Status: open (inferred from source dates) · Service Brakes, Hydraulic:antilock/traction Control/electronic Limited Slip:control Unit/module

The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando. Safety recalls included in this Audit Query (AQ) review include: Hyundai recalls 20V-520, 20V-543, 21V-161, 21V-160, 21V-303, 22V-056, 22V-810, and 23V-651. Kia recalls 16V-815, 20V-518, 20V-519, 21V-137, 21V-331, 22V-051, 22V-800, and 23V-652 The purpose of this AQ is to evaluate the timeliness and scoping of Hyundai and Kia’s defect decision making and adherence with reporting requirements; and understand the varying defect descriptions and remedies between these recalls.

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.

EA19001 · Electrical Overstress

Opened Apr 19, 2019 · Closed Sep 19, 2024

Status: closed (inferred from source dates) · Air Bags: Air Bag/restraint Control Module

The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect.  During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW.  The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with manufacturer design specifications.  The ECU in the subject vehicles contains a model DS84 application-specific integrated circuit (ASIC) which controls the communication of the crash sensor signal, firing commands (i.e., when to deploy the airbag(s) and/or pretensioners), and fault information (e.g., diagnostic trouble codes). In September 2016, FCA announced recall 16V-668 for certain model year (MY) 2010 to 2014 Chrysler, Dodge and Jeep products manufactured with the subject ZF-TRW ACU.  In this recall, FCA discussed an EOS condition that resulted in a failure of the subject DS84 ASIC, which caused air bag non-deployment.  FCA noted that the defect condition had only been observed in vehicles equipped with sensor harnessing routed across the front of the vehicle.  Other FCA vehicles that also used the subject ACU, but were not equipped with cross-car harnessing, had not experienced EOS failures, despite similar time in service. During the course of this investigation, ODI sent two separate Information Request (IR) letters to six vehicle manufactures (including FCA, Hyundai, Honda, Kia, Mitsubishi, and Toyota) and one IR letter to ZF-TRW.  These IR letters resulted in ODI receiving comprehensive data from these manufacturers and suppliers. Studies of this data found that the DS84 ASIC does not have sufficient protection against negative electrical transients or electrical overstress (“EOS”) that can be generated in certain severe crashes.  An electrical transient occurs when the electrical power supplied to a circuit changes momentarily over a short duration of time.   In these severe crash cases, the crash sensors and other powered wiring can be damaged and short circuited so as to create a negative electrical transient of sufficient intensity and duration (that are outside the vehicle manufacturer's specification) to damage the ASIC before the restraint device deployment signal is received by the SRS ECU.  This damaged signal can lead to incomplete or nondeployment of the air bags and/or pretensioners.  Airbag non-deployment and/or lack of pretensioner operation can increase the risk or severity of injury in a crash.A total of 8 fatalities and 14 injuries were associated with known EOS events. The common element in all investigated manufacturers vehicles is the SRS ECU containing a DS84 ASIC manufactured by ZF-TRW.  The risk associated with the ASIC is equally shared among all OEMS involved in the investigation.  The actual real-world risk can be mitigated by other factors which were assessed by ODI during this investigation. The first mitigating factor involves protections built into the ACU design which protect the DS84 ASIC from damage.  There are multiple strategies and levels of protection employed by different OEMs that provide effective EOS mitigation.  The two most common strategies at the ACU level are circuit protection diodes on the remote senor signal lines, and current limiting resistors that protect critical components. The second mitigating factor is found at the vehicle level and involves the location and routing of the wires leading from the crash sensors to the SRS ECU.  If the wires are well protected in a crash and are not routed with other power wires carrying large currents, the risk for an EOS event is significantly reduced or eliminated. These design specific factors combine to produce a spectrum of risk for the vehicles equipped with ACUs using the DS84 ASIC.  Given the many of years of field exposure, it is possible to divide the subject population into two groups; vehicles which have experienced EOS events, and vehicles which have not experienced EOS field events. Four of the six OEMs involved in this investigation have experienced EOS field events on at least one of their models equipped with a DS84 ASIC.  All vehicle models (including the Toyota models identified in the Failure Report Summary of the opening resume for this investigation) with field events have been recalled.  In an abundance of caution, ODI kept this investigation open five years to monitor field performance and did not identify any field events on vehicles not included in existing safety recalls. Given the spectrum of risk identified in this investigation and that all vehicles with a demonstrated unreasonable risk have been recalled, ODI is closing this investigation. ODI is closing this investigation with the following manufacturer safety recalls: 16V-668, 18E-043, 18V-137, 18V-363, and 20V-024.  With the recall actions taken by the subject vehicle and equipment manufacturers, this investigation is closed. The closing of this investigation does not constitute a finding by NHTSA that a safety-related defect does not exists on other model or model year vehicles outside of the recall scopes. The agency reserves the right to take further action if warranted by the circumstances.