2023 Kia K5 engine problems
12 owner complaints filed with NHTSA name the engine on the 2023 Kia K5 — 11% of all complaints for this model year.
What owners report
“I am filing this complaint regarding Kia America’s handling of a safety recall and repurchase of my 2023 Kia K5 GT-Line (VIN: [XXX]. I purchased this vehicle used on XXX, and financed it through Capital One. After taking my vehicle to an authorized Kia dealership for the fuel tank valve safety…”
filed Jul 22, 2026
“10/25 I was traveling, and my car sudden loss of power, while in traffic.. almost causing accident. 10/28 I was traveling on interstate, and my car sudden loss of power, while in traffic.. almost causing accident. This is ridiculous.. When I hit the gas sometimes, feels like it fluttering and…”
filed Oct 28, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
TECHNICAL SERVICE BULLETIN: ITM REPLACEMENT AND ECM LOGIC IMPROVEMENT (CA2511) - This bulletin provides information to replace the Integrated Thermal Management Module (ITM) and then upgrade the Engine Control Module…
TSB_ENG260 · Service Bulletin/Repair Instructions · issued Nov 19, 2025
Engine problems in other K5 years
| Year | Reports | Share |
|---|---|---|
| 2025 K5 | 3 | 6% |
| 2024 K5 | 9 | 30% |
| 2022 K5 | 27 | 22% |
| 2021 K5 | 29 | 18% |
Other reported problem areas on the 2023 Kia K5
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.