YearToAvoid

2023 Kia K5 Fuel System Problems

Fuel System complaints make up 53 of 107 total complaints for the 2023 Kia K5, or 50%. Owners report fuel tank expansion, loud bangs, gasoline odor, and power loss, tied to a recall (25V794000) for a damaged check valve.

Fuel System complaints
53
50% of 107
Crashes reported
0
Fires reported
0
Injuries reported
9
Median mileage
60,000 mi
Related recalls
1

Typical fuel system symptoms owners report

  • Owners report a sudden loud bang or explosion sound from underneath the car, often followed by the rear seat lifting or bending upward.
  • Some drivers describe a strong gasoline odor inside and around the vehicle even before any other symptom appeared.
  • Several complaints describe the fuel tank physically expanding or swelling, pushing against the undercarriage and fuel pump cover.
  • Multiple owners report sudden loss of power or the car entering limp-home mode at highway speed after the fuel system failure.
  • A few complaints mention the check engine light illuminating along with a ticking noise coming from the fuel tank area.
  • One owner reported the vehicle would not accept fuel at the pump, with gas spilling out, after the tank had reportedly expanded.

When 2023 Kia K5 fuel system complaints were filed

First complaint Nov 3, 2023, latest Aug 31, 2026.

2023 Kia K5 fuel system complaints: complaints filed per month6Nov 2023Aug 2024Feb 2025Jul 2025Dec 2025Apr 2026Aug 2026
53 complaints filed with NHTSA from Nov 2023 to Aug 2026; peak Jul 2026 (6).

Fuel System recalls for the 2023 Kia K5

  1. NHTSA 25V794000Nov 17, 2025Fuel System250,547 vehicles

    Fuel system, gasoline

    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.

    Risk: 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.

Fuel System complaints by K5 model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 202156 (34%)
  2. 202243 (34%)
  3. 202353 (50%)
  4. 20244 (13%)
  5. 20250 (0%)

Frequently asked questions

Does the 2023 Kia K5 have a fuel system recall?
Yes. Recall 25V794000, reported November 17, 2025, covers 2021-2024 K5 vehicles for a damaged check valve that can let air enter the fuel tank, causing it to expand and contact hot exhaust components and melt the tank. Kia's remedy is to replace the check valve and inspect or replace the fuel tank as needed.
How common are fuel system complaints on the 2023 Kia K5?
Fuel System complaints account for 53 of the 107 total complaints filed for the 2023 K5, or 50% of all complaints for that model year, the highest share among the years listed (2021 at 34%, 2022 at 34%, 2024 at 13%, 2025 at 0%).
What do owners describe when the fuel tank fails?
Owners describe a loud bang or explosion-like noise, gasoline odor, the rear seat lifting due to the expanding tank, check engine lights, and in some cases sudden loss of power while driving.
Have there been injuries or fires linked to this problem?
NHTSA data lists 9 injuries and 0 fires tied to Fuel System complaints for the 2023 K5, with 0 crashes reported.
At what mileage do fuel system problems typically appear?
The median mileage at failure for Fuel System complaints on the 2023 K5 is 60,000 miles.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.