KIA K5 Fuel/propulsion System Problems

Source: NHTSA · Updated Oct 12, 2026 · 122 complaints analyzed

Owners have filed 122 complaints with NHTSA about fuel/propulsion system problems on the KIA K5 across 4 model years. The 2021 model year has the most (44). The words owners use most often: “fuel tank” (43% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Fuel tank: mentioned in 53 of 122 complaints (43%)
  • Heard loud: mentioned in 13 of 122 complaints (11%)
  • Check valve: mentioned in 8 of 122 complaints (7%)
  • Gas station: mentioned in 8 of 122 complaints (7%)

At what mileage do fuel/propulsion system problems happen?

How serious are the reports?

Of 122 complaints, 3 a fire, 3 an injury.

KIA K5 fuel/propulsion system complaints by model year

Peak: 2021, with 44 complaints
2021: 442021442022: 352022352023: 402023402024: 320243

n = 122 complaints · Source: NHTSA

Model yearFuel/propulsion System complaintsShare of that yearMedian miles
2024 K5310%—
2023 K54037%—
2022 K53527%—
2021 K54426%—

When owners reported it

Peak: 2025, with 53 complaints
2021: 1202112023: 4202342024: 192024192025: 532025532026: 45202645

n = 122 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists fuel/propulsion system for the KIA K5. A pattern of complaints does not always lead to a recall.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

gas door will not open, so then unless i forcefully pull it to open it will not open.

Received Oct 12, 2026 · NHTSA complaint 11770594

I am filing a safety complaint regarding my Kia K5 because I am concerned about a potentially dangerous mechanical defect. I purchased this vehicle used from CarMax approximately two years ago. Within the first 30 days of ownership, the steering wheel began shaking. CarMax repaired the problem at…

Received Oct 9, 2026 · NHTSA complaint 11770020

I am filing this complaint regarding the handling of a fuel tank recall involving my 2023 Kia K5 GT-Line. On XXX, I brought my vehicle to Kia Rockwall in [XXX], after being informed of an issue related to a fuel tank recall. I was told that my vehicle could not be returned to me and that Kia would…

Received Oct 8, 2026 · NHTSA complaint 11769994

2021 Kia K5 [redacted] Gas tank expanded and deformed the body, noticeable under back seat. Risk of gas leak or fire Kia of Mckinney service center has vehicle unrepairable SC356 KIA has case # 26282908 No symptoms, driver complained stopping was jerky CAN'T FIX CAR AND WON'T REPLACE IT.

Received Sep 21, 2026 · NHTSA complaint 11765963

Vehicle experienced a severe engine misfire (P0302), rough running, and loss of power while driving. Dealership confirmed the Purge Control / PCV valve failed (replaced under Recall SC356 / 25V-794), but charged out-of-pocket for the Cylinder 2 ignition coil that failed as a direct result of the…

Received Sep 16, 2026 · NHTSA complaint 11764825
KIA K5
KIA K5 TF China. Representative photo; appearance varies by model year. Photo: Dinkun Chen, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all KIA K5s have fuel/propulsion system problems?

No. NHTSA has 122 owner complaints about fuel/propulsion system for the KIA K5. Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the KIA K5 fuel/propulsion system?

No recall currently lists fuel/propulsion system for this vehicle.

What do owners say about fuel/propulsion system problems on the KIA K5?

The most frequent phrase is “fuel tank”, in 53 of 122 complaints, followed by “heard loud” (13).

See all KIA K5 problems.