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2021 Kia K5

Owner reports · Recalls · Investigations

More warning signs than most K5 years

Owner complaints for the 2021 Kia K5 are substantially higher than the model-year median of 78.5.

About this comparison →

How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 31 of 165 reports include usable mileage. There isn’t enough coverage to show a useful chart.

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.

  • Electrical System. Review the 45 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel/propulsion System. Review the 42 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

8 crash reports2 fire reports6 injury reports

Fuel System, Gasoline complaints

13 reports
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111,000 miles · Aug 17, 2026
Fuel System, Gasoline

The contact owns a 2021 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The vehicle was taken to a dealer for the recall repair. The contact was struggling to receive updates on the status of the vehicle. The contact spoke with a service clerk and was informed that the repai…

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The contact owns a 2021 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The vehicle was taken to a dealer for the recall repair. The contact was struggling to receive updates on the status of the vehicle. The contact spoke with a service clerk and was informed that the repair was going well and that only one recall test remained. However, a supervisor later called and stated that the recall repair could not be completed. The vehicle could not be repaired. The vehicle was no longer functional due to a high risk of catching fire from fuel tank swelling caused by the recall defect. The contact stated that prior to the dealer visit, the vehicle had no issues but became inoperable. The vehicle was not repaired, and the dealer stated that the vehicle could not be repaired. The manufacturer was made aware of the issue. The failure mileage was approximately 111,000.

NHTSA ODI #11757490

119,185 miles · Jul 23, 2026
EngineFuel System, GasolineTires

The contact owns a 2021 Kia K5. The contact stated that while driving approximately 55 MPH, the fuel gauge suddenly went from one-half tank to empty. The fuel level displayed 120 miles to empty. The contact attempted to refuel the vehicle but was unable to add fuel to the tank. The contact also stated that the oil warning light …

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The contact owns a 2021 Kia K5. The contact stated that while driving approximately 55 MPH, the fuel gauge suddenly went from one-half tank to empty. The fuel level displayed 120 miles to empty. The contact attempted to refuel the vehicle but was unable to add fuel to the tank. The contact also stated that the oil warning light and the TPMS warning light was illuminated. The contact associated the failure with NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 119,185.

NHTSA ODI #11752335

120,000 miles · Jul 22, 2026
EngineFuel System, GasolineSeats

The contact owns a 2021 Kia K5. The contact stated that there were failures with the spark plugs. While driving at an undisclosed speed, the vehicle shuddered, and the engine sputtered. The contact stated that fuel spewed out of the filler neck while refueling the vehicle, and the fuel gauge incorrectly indicated that the fuel t…

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The contact owns a 2021 Kia K5. The contact stated that there were failures with the spark plugs. While driving at an undisclosed speed, the vehicle shuddered, and the engine sputtered. The contact stated that fuel spewed out of the filler neck while refueling the vehicle, and the fuel gauge incorrectly indicated that the fuel tank was empty after refueling. Additionally, there was an abnormal egg and sulfur odor coming from the vehicle with the check engine warning light intermittently illuminated. The contact stated that the vehicle was taken to a local dealer and inspected under NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). During the inspection, the seats were damaged. The vehicle was not repaired. The manufacturer was notified of the failure and was negotiating a buyback. The failure mileage was approximately 120,000.

NHTSA ODI #11752163

90,000 miles · Jul 20, 2026
Fuel System, Gasoline

The contact owns a 2021 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that while driving approximately 70 MPH, upon further inspection the fuel level was lowering unexpectedly. The check en…

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The contact owns a 2021 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The contact stated that while driving approximately 70 MPH, upon further inspection the fuel level was lowering unexpectedly. The check engine warning light was illuminated. The vehicle was taken to a local Auto Zone and was scanned with an OBD2 scanner and diagnosed with a recall-related failure. The vehicle was taken to a local dealer, where it was diagnosed with an expanded fuel tank; however, the vehicle was not repaired because the dealer was short-staffed. The dealer associated the failure with NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The manufacturer was made aware of the failure; a case was filed; however, no assistance was provided. The failure mileage was approximately 90,000.

NHTSA ODI #11751597

115,000 miles · Jul 20, 2026
Fuel System, Gasoline

The contact owns a 2021 Kia K5. The contact stated that while driving approximately 55-60 MPH, the fuel tank expanded. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was determined that the fuel tank had expanded, and that the vehicle was unrepairable. The vehicle was not repaired. …

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The contact owns a 2021 Kia K5. The contact stated that while driving approximately 55-60 MPH, the fuel tank expanded. There were no warning lights illuminated. The vehicle was towed to the local dealer, where it was determined that the fuel tank had expanded, and that the vehicle was unrepairable. The vehicle was not repaired. The dealer offered a buyback. The manufacturer was not contacted. The failure mileage was approximately 115,000.

NHTSA ODI #11751470

200,000 miles · May 14, 2026
EngineFuel System, Gasoline

The contact owns a 2021 Kia K5. The contact stated that there was an abnormal odor of fuel. The check engine light was illuminated. The contact received the recall notice for NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). An unknown local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufac…

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The contact owns a 2021 Kia K5. The contact stated that there was an abnormal odor of fuel. The check engine light was illuminated. The contact received the recall notice for NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). An unknown local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 200,000.

NHTSA ODI #11737762

145,000 miles · Feb 27, 2026
Fuel System, Gasoline

The contact owns a 2021 Kia K5. The contact stated that while driving 65-70 MPH, the fuel gauge displayed zero miles to empty. The contact pulled into the nearest gas station, and while attempting to add fuel to the vehicle, the contact became aware that there was fuel leaking out of the fuel tank outlet, and the gas pump nozzle…

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The contact owns a 2021 Kia K5. The contact stated that while driving 65-70 MPH, the fuel gauge displayed zero miles to empty. The contact pulled into the nearest gas station, and while attempting to add fuel to the vehicle, the contact became aware that there was fuel leaking out of the fuel tank outlet, and the gas pump nozzle was stopped. The contact was unable to refuel the vehicle. The contact stated that after returning to drive, the fuel gauge indicated 100 miles to empty. The vehicle was taken to the dealer for the recall repair under NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline), and the dealer advised the contact that the manufacturer had instructed the contact not release the vehicle to the owner due to the recall. While diagnosing the vehicle, a technician at the dealer sent a photo displaying that the rear driver's side seat had melted internally due to the fuel tank overheating. Additionally, the dealer informed the contact that the SC288 Alpha Campaign had failed. The vehicle remained at the dealer for four months; however, the manufacturer later sent a letter advising the contact that the vehicle could not be repaired, and a buyback was suggested. The manufacturer offered to reimburse the down payment for the vehicle. The contact stated that the buy-back offer was unsatisfactory. The contact declined the offer, and the manufacturer then threatened to tow the unrepaired vehicle back to the residence. The contact stated that the manufacturer had failed to honor the recall repair. The vehicle was not repaired. The failure mileage was approximately 145,000.

NHTSA ODI #11720940

52,000 miles · Feb 26, 2026
EngineEngine And Engine CoolingFuel System, Gasoline

The contact owns a 2021 Kia K5. The contact stated that the check engine warning light remained illuminated with DTC: P0471 displayed. The vehicle was included in NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline) and was taken to the dealer for the recall repair where the dealer replaced the check valve. After receiving t…

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The contact owns a 2021 Kia K5. The contact stated that the check engine warning light remained illuminated with DTC: P0471 displayed. The vehicle was included in NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline) and was taken to the dealer for the recall repair where the dealer replaced the check valve. After receiving the recall repair, the check engine warning light remained illuminated with DTC: P0471 displayed. The vehicle was returned to the dealer, who diagnosed that the Exhaust Pressure Sensor was causing the Exhaust Gas Recirculation (EGR) Sensor to fail and needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 52,000.

NHTSA ODI #11720629

116,000 miles · Jan 16, 2026
Fuel System, Gasoline

The contact owns a 2021 Kia K5. While driving at an undisclosed speed, the contact heard a loud explosion coming from the rear of the vehicle, and there was a dragging sound coming from the vehicle. The contact stated that the rear seat raised up into the air with children seated in the seat. The contact became aware of fuel lea…

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The contact owns a 2021 Kia K5. While driving at an undisclosed speed, the contact heard a loud explosion coming from the rear of the vehicle, and there was a dragging sound coming from the vehicle. The contact stated that the rear seat raised up into the air with children seated in the seat. The contact became aware of fuel leaking and that the fuel tank was hanging down. The vehicle was towed to the residence and was later driven to a KIA dealer. The manufacturer was made aware of the failure. The approximate failure mileage was 116,000.

NHTSA ODI #11711403

70,000 miles · Dec 9, 2025
Fuel System, Gasoline

The contact owns a 2015 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The contact stated that days before the vehicle was scheduled for an unknown recall repair, while refueling, the contact observed gasoline pouring out of the tank. The vehicle was taken to a dealer, wher…

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The contact owns a 2015 Kia K5. The contact received notification of NHTSA Campaign Number: 25V794000 (Fuel System, Gasoline). The contact stated that days before the vehicle was scheduled for an unknown recall repair, while refueling, the contact observed gasoline pouring out of the tank. The vehicle was taken to a dealer, where it was diagnosed, and determined that the fuel tank had expanded due to fumes being trapped inside. The vehicle was not repaired due to parts not being available for the repair. The contact stated that the manufacturer has exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure. The failure mileage was approximately 70,000.

NHTSA ODI #11703986

Official recalls

6

25V794000 · Fuel System, Gasoline

Nov 17, 2025

Kia America, Inc. (Kia) is recalling certain 2021-2024 K5 vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.

Consequence & remedy

Consequence: A melted fuel tank can leak, increasing the risk of a fire.

Remedy: Dealers will replace the check valve. The fuel tank will be inspected for damage and replaced as necessary. All repairs will be performed free of charge. Owner notification letters were mailed January 16, 2026. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is SC356. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning December 1, 2025.

23V149000 · Air Bags:side/window:curtain

Mar 7, 2023

Kia America, Inc. (Kia) is recalling certain 2021-2023 K5 vehicles. The side curtain air bags may have been installed incorrectly, causing them not to deploy properly in the event of a crash.

Consequence & remedy

Consequence: Air bags that do not deploy as intended can increase the risk of injury in a crash.

Remedy: Dealers will inspect and reinstall the side curtain air bags, as necessary, free of charge. Owner notification letters were mailed April 7, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC263.

22V760000 · Power Train:automatic Transmission

Oct 11, 2022

Kia Motors, Inc. (Kia) is recalling certain 2021-2022 Sorento and 2021-2023 K5 vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.

Consequence & remedy

Consequence: Loss of drive power increases the risk of a crash.

Remedy: Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed December 9, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC250.

21V519000 · Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings

Jul 8, 2021

Kia Motor America (Kia) is recalling certain 2021 Sorento and 2021-2022 K5 vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.

Consequence & remedy

Consequence: A fuel leak increases the risk of a fire.

Remedy: Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed July 21, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC214.

21V447000 · Lane Departure: Lane Keep: Steering Assist; Steering

Jun 14, 2021

Kia Motors America (Kia) is recalling certain 2021-2022 K5 vehicles equipped with 2.5L T-GDI engines. The Rack-Mounted Motor Driven Power Steering (R-MDPS) system lacks the ability to diagnose communication faults. If a communication fault occurs while driving around a curve with Lane Following Assist (LFA) engaged, the steering assist level may not adjust properly, causing a sudden increase in the steering effort required.

Consequence & remedy

Consequence: A sudden increase in steering effort can increase the risk of a crash.

Remedy: Dealers will update the R-MDPS software, free of charge. Owner notification letters are were mailed June 24, 2021. Owner may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC213.

Additional source detail variants (2)

Lane Departure: Lane Keep: Steering Assist

Kia Motors America (Kia) is recalling certain 2021-2022 K5 vehicles equipped with 2.5L T-GDI engines. The Rack-Mounted Motor Driven Power Steering (R-MDPS) system lacks the ability to diagnose communication faults. If a communication fault occurs while driving around a curve with Lane Following Assist (LFA) engaged, the steering assist level may not adjust properly, causing a sudden increase in the steering effort required.

Consequence: A sudden increase in steering effort can increase the risk of a crash.

Remedy: Dealers will update the R-MDPS software, free of charge. Owner notification letters are were mailed June 24, 2021. Owner may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC213.

Steering

Kia Motors America (Kia) is recalling certain 2021-2022 K5 vehicles equipped with 2.5L T-GDI engines. The Rack-Mounted Motor Driven Power Steering (R-MDPS) system lacks the ability to diagnose communication faults. If a communication fault occurs while driving around a curve with Lane Following Assist (LFA) engaged, the steering assist level may not adjust properly, causing a sudden increase in the steering effort required.

Consequence: A sudden increase in steering effort can increase the risk of a crash.

Remedy: Dealers will update the R-MDPS software, free of charge. Owner notification letters are were mailed June 24, 2021. Owner may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC213.

21V164000 · Air Bags: Air Bag/restraint Control Module; Air Bags:sensor:occupant Classification:front Passenger

Mar 11, 2021

Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Consequence & remedy

Consequence: In the event of a crash, deployment of the front passenger air bag, with a child in that seat, can increase the risk of injury to the child.

Remedy: Kia will notify owners, and dealers will replace the OCS/ODS unit, free of charge. The recall began March 18, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC207.

Additional source detail variants (2)

Air Bags:sensor:occupant Classification:front Passenger

Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Consequence: In the event of a crash, deployment of the front passenger air bag, with a child in that seat, can increase the risk of injury to the child.

Remedy: Kia will notify owners, and dealers will replace the OCS/ODS unit, free of charge. The recall began March 18, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC207.

Air Bags: Air Bag/restraint Control Module

Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Consequence: In the event of a crash, deployment of the front passenger air bag, with a child in that seat, can increase the risk of injury to the child.

Remedy: Kia will notify owners, and dealers will replace the OCS/ODS unit, free of charge. The recall began March 18, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC207.

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

0

No exact-year investigations in this snapshot.