2025 Kia K4 Other or unknown Problems
- Complaints
- 12about this part
- Share
- 26%of 47 total for the year
- Median mileage
- —not reported
- Trend
- Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA recorded 12 complaints about the other or unknown of the 2025 Kia K4, 26% of the 47 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I'm not sure what's going on. It's telling me to start stop the car when it's running and then it will turn off and go into accessory mode even when I'm driving that's dangerous. I took it to Kia a month ago for the same thing but they said they couldn't find anything, but it has to be something if I'm not the only one saying this is happening to their car. my car doesn't even have 8000 miles on my car.”
NHTSA complaint #11750872, filed 2026-07“I had a diagnostic appointment on 9/8/25 for my 2025 Kia K4 due to a popping noise on the windshield that happens when the weather is hot/sun on windshield. Once the diagnostic was complete, the recommendation from the dealer was to replace the windshield since it was not factory. The dealer did hear the noise during the diagnostic. I purchased the vehicle Jan 2025 and I start hearing the popping noise in June 2025 (factory windshield #1). …”
NHTSA complaint #11689694, filed 2025-09“When I drive over 65 mph, I feel the car lose stability, and sometimes I feel those movements in the steering wheel. Also, it doesn't show the actual tire tread depth. In addition. And there is a burning smell.”
NHTSA complaint #11714428, filed 2026-01“Every time I drive my car randomly something sounds like a big pebble hits my windshield. My car is available for inspection upon request. My safety is put at risk cause it scares me(makes me jerk). This can cause me to accidently jerk my steering wheel and cause me to leave my lane & possible hit another vehicle. I have an appointment with the dealership repair center on Nov 9, 2025. I can get it inspected by possibly the police or my insurance agency. There are no warning lamps or messages prior to the sound of a rock hitting my windshield. …”
NHTSA complaint #11698275, filed 2025-11“I own a 2025 Kia K4 that has experienced multiple serious defects since purchase, raising ongoing safety concerns. Within the first four months, my windshield has failed or cracked four times, with one replacement denied by Kia and paid out-of-pocket. The windshield continues to make loud cracking noises, suggesting a structural defect that has not been resolved. In addition, the sunroof does not open or close properly, and while Kia acknowledged the defect, they only offered a potential software adjustment that does not address the root cause. …”
NHTSA complaint #11681852, filed 2025-08Other or unknown: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 5 | 38% |
| 2025 | 12 | 26% |
Other parts of the 2025 Kia K4
14 complaintsTransmission and drivetrain
8 complaintsAir bags
7 complaintsEngine
7 complaintsForward collision avoidance
7 complaintsLane departure
7 complaintsSteering
5 complaintsVehicle speed control
4 complaintsBack-over prevention (rear camera)
3 complaintsFuel system
3 complaintsBrakes
2 complaintsEngine cooling
2 complaints
← All problems reported for the 2025 Kia K4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology