2021 Kia K5 VIN Check, Recalls & Reliability
The 2021 Kia K5 has good reliability. There are 6 recalls and 132 owner complaints on file for the 2021 KIA K5. Severity signals include 7 crash-related complaints and 2 fire-related complaints. The most commonly reported problem areas are: Electrical System (34), Unknown Or Other (18), Fuel Propulsion System (14).
K5 reliability snapshot
Data sourced from Auto Reliability Index, aggregating NHTSA recalls, owner complaints, and RepairPal repair-cost records.
Used-car research
Research the KIA K5 before checking the VIN
Compare model years, recurring problems, safety campaigns and market value first. Then use the VIN to verify the history of the individual car.
Most-reported 2021 KIA K5 issues
Owner-reported problem categories from NHTSA complaint filings. Counts reflect complaints per category for the most-recent model year on file.
- Electrical System34
- Unknown Or Other18
- Fuel Propulsion System14
- Power Train13
- Engine9
- Structure9
Pre-purchase inspection checklist for the 2021 KIA K5
Hands-on checks distilled from real NHTSA complaint patterns and recall histories. Bring this list to a test drive or mechanic inspection.
- Inspect fuel tank for swelling or leaks
- Test for transmission slipping or delayed shifting
- Check brakes for rotor warping and shaking
- Verify HVAC blower motor functionality
- Inspect electrical system for melted fuses or wiring
- Ensure steering wheel centers and does not pull
2021 K5 recalls (6)
Every NHTSA safety recall logged against the 2021 K5. A VIN check confirms whether any recall remains unrepaired on a specific vehicle.
- FUEL SYSTEM, GASOLINENHTSA 25V794000Nov 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: 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.
- AIR BAGSNHTSA 23V149000Mar 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: 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.
- POWER TRAINNHTSA 22V760000Oct 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: 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.
- FUEL SYSTEM, GASOLINENHTSA 21V519000Jul 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: 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.
- LANE DEPARTURE, STEERINGNHTSA 21V447000Jun 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: 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.
- AIR BAGSNHTSA 21V164000Mar 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: 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.
2021 KIA K5 on the road
92,326 2021 KIA K5 units were sold new in the US — a key signal for the size of today's used-market inventory.
How the 2021 KIA K5 stacks up against rivals
The most-shopped alternatives in the same segment. Each link opens a side-by-side reliability and cost comparison.
Reliability verdict for the 2021 Kia K5
With a score slightly below the segment average, the 2021 Kia K5 lands in a mixed reliability position rather than a clear strength. The model’s first-year generation context adds uncertainty to the picture, and the recall activity is elevated rather than limited, signaling more corrective actions than typical for a calm ownership profile.
Complaints are not confined to a single subsystem. Electrical concerns lead, but reports also extend into fuel/propulsion, powertrain, and engine areas, suggesting a broader spread of potential trouble spots instead of one dominant weak link. The presence of a sizable “unknown or other” share further reduces clarity on where issues concentrate.
Overall, the data supports a moderate buyer risk level.
What you get in a 2021 Kia K5 report
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2021 Kia K5 — Frequently asked questions
Is the 2021 Kia K5 reliable?
With a score slightly below the segment average, the 2021 Kia K5 lands in a mixed reliability position rather than a clear strength. The model’s first-year generation context adds uncertainty to the picture, and the recall activity is elevated rather than limited, signaling more corrective actions than typical for a calm ownership profile.
How many recalls does the 2021 Kia K5 have?
6 NHTSA safety recalls have been issued for the 2021 Kia K5. A VIN check confirms whether any remain unrepaired on a specific vehicle.
What are the most common 2021 Kia K5 problems?
The most-reported 2021 Kia K5 problem areas are: Electrical System (34), Unknown Or Other (18), Fuel Propulsion System (14).
Should I run a VIN check on a 2021 Kia K5?
Yes. A VIN report verifies title brands, odometer history, accident records, and recall completion on a specific 2021 Kia K5, complementing the model-year reliability data on this page.