Most common 2025 Kia K4 problems
Share of the 47 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Kia K4 complaints by model year
2025 Kia K4 recalls (2)
Electrical system › Instrument cluster/panel
Kia America, Inc. (Kia) is recalling certain 2025 Kia K4, 2025-2026 Sorento, Sorento Hybrid, Sorento Plug-In Hybrid Electric (PHEV), 2026 Sportage, Sportage Hybrid, Sportage PHEV, K5, EV9, Carnival, and Carnival Hybrid vehicles. Due to a software error, the instrument panel display may fail.
Remedy: The instrument panel display software will be updated over-the-air (OTA) or by a dealer, free of charge. Owner notification letters are expected to be mailed March 26, 2026.
Engine and engine cooling › Critical fasteners
Kia America, Inc. (Kia) is recalling certain 2025 K4 and Sorento vehicles. The connecting rod bolts in the engine may have been improperly tightened, which can cause a loss of drive power.
Remedy: Dealers will replace the sub engine assembly, free of charge. Owner notification letters are expected to be mailed September 12, 2025. Owners may contact Kia customer service at 800-333-4542.
What 2025 Kia K4 owners say
Driver assistance
The contact owned a 2025 Kia K4. The contact stated while driving at various speeds, the vehicle was pulling to the left unintendedly. The contact stated that upon disengaging the Lane Keep Assist, the failure recurred while driving. The vehicle was taken to Discount Tire, where the tire pressure was adjusted. The vehicle was taken to the dealer, where an alignment was performed; however, the failure persisted. The contact stated while exiting the expressway and driving approximately 30 MPH, the vehicle veered to the left unintendedly, causing the contact to lose control of the vehicle. The vehicle veered off the road and crashed into a ditch, and the vehicle faced oncoming traffic. Several unknown warning lights were illuminated after the crash. The air bags did not deploy. The contact hit the middle of her forehead against the steering wheel and sustained a bruise. …
The contact owns a 2025 Kia K4. The contact stated that while driving at 75 MPH, the vehicle downshifted upon depression of the accelerator pedal, with heavy white smoke coming out of the exhaust pipe. The contact stated that the low oil pressure warning light was illuminated prior to the failure. The contact pulled off the highway and drove into a store parking lot as the engine made an abnormal knocking sound. The contact requested assistance from a bystander, who advised the contact that the head gasket appeared to have blown. The contact checked and noticed that the coolant and oil levels were low. The contact added both oil and water to the vehicle and drove to the residence. The contact made a diagnosis appointment with a local dealer. Upon starting the vehicle, the check engine warning light illuminated, and the contact decided to tow the vehicle to the dealer. …
Electrical system
The contact's daughter owns a 2025 Kia K4. The contact stated that there was an abnormal clicking sound coming from the dashboard. Additionally, the contact stated that while his daughter was driving to the dealer, the speedometer displayed 70 MPH; however, the driver was pulled over by the Police and informed the driver that the vehicle was driving 90 MPH. The vehicle was taken to the dealer, where the body domain controller was replaced. The contact stated that while the owner was driving, a week later, the instrument panel and the infotainment system screen turned off. The vehicle was taken to the dealer, where the owner was informed that the vehicle was test-driven every other day to determine the cause of the failure. The owner was provided with vehicle rental assistance. …
The contact owns a 2025 Kia K4. The contact stated that while driving at 75 MPH, the vehicle downshifted upon depression of the accelerator pedal, with heavy white smoke coming out of the exhaust pipe. The contact stated that the low oil pressure warning light was illuminated prior to the failure. The contact pulled off the highway and drove into a store parking lot as the engine made an abnormal knocking sound. The contact requested assistance from a bystander, who advised the contact that the head gasket appeared to have blown. The contact checked and noticed that the coolant and oil levels were low. The contact added both oil and water to the vehicle and drove to the residence. The contact made a diagnosis appointment with a local dealer. Upon starting the vehicle, the check engine warning light illuminated, and the contact decided to tow the vehicle to the dealer. …
Engine & cooling
The contact owns a 2025 Kia K4. The contact stated that while driving at 75 MPH, the vehicle downshifted upon depression of the accelerator pedal, with heavy white smoke coming out of the exhaust pipe. The contact stated that the low oil pressure warning light was illuminated prior to the failure. The contact pulled off the highway and drove into a store parking lot as the engine made an abnormal knocking sound. The contact requested assistance from a bystander, who advised the contact that the head gasket appeared to have blown. The contact checked and noticed that the coolant and oil levels were low. The contact added both oil and water to the vehicle and drove to the residence. The contact made a diagnosis appointment with a local dealer. Upon starting the vehicle, the check engine warning light illuminated, and the contact decided to tow the vehicle to the dealer. …
The contact owns a 2025 Kia K4. The contact stated while driving at 40 MPH on several occasions, the vehicle stalled. The vehicle was able to restart but would immediately stall again, requiring the driver to wait approximately 10 minutes before the vehicle could be successfully restarted and driven. The vehicle was towed on one occasion and taken to the same dealer twice, but the dealer was unable to replicate the failure. The manufacturer was notified of the failure. The failure mileage was approximately 69,085.
2025 Kia K4 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.0L 4-cyl | CVT | FWD | 30 / 40 / 34 |
| 1.6L 4-cyl turbo | 8-speed automatic | FWD | 26 / 36 / 29 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2025 Kia K4 a good car?
There isn't enough complaint history for the K4 to compare model years reliably. So far owners have filed 47 complaints with NHTSA.
What is the most common problem with the 2025 Kia K4?
The driver assistance — 15 complaints, 32% of all complaints for this model year, most often about warnings. Next are the electrical system (14) and engine & cooling (9).
How many recalls does the 2025 Kia K4 have?
There are 2 recalls for the 2025 Kia K4, the most recent from January 26, 2026 (instrument cluster/panel). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
At what mileage do 2025 Kia K4 problems happen?
The median mileage reported in complaints is about 1,000 miles; 60% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.