The Used Car Index

2025 Kia K4 problems

NHTSA lists 46 complaints for the 2025 Kia K4, 10 of them mention a crash and 0 mention a fire. 6 complaints mention an injury, with 8 injuries and 0 deaths reported.

Data build 2026-10-08.

NHTSA lists this vehicle as KIA K4.

At a glance

Complaints
46
With crash
10
With fire
0
With injury (complaints)
6
Injuries
8
Deaths
0
Recalls
2
Do not drive recalls
0
Park outside recalls
0
Recall potential units (maximum)
42,677
Investigations
0
Open investigations
0
Manufacturer communications
19

Complaints per 100k sold unavailable. No sales source is available for this record.

Where the complaints are

Top systems
SystemComplaintsShare of this vehicle's complaints
ELECTRICAL SYSTEM1328.3%
UNKNOWN OR OTHER1226.1%
AIR BAGS715.2%
ENGINE715.2%
FORWARD COLLISION AVOIDANCE715.2%
LANE DEPARTURE715.2%
POWER TRAIN715.2%
STEERING510.9%
VEHICLE SPEED CONTROL48.7%
BACK OVER PREVENTION36.5%
Top subsystems
SystemSubsystemComplaints
LANE DEPARTUREASSIST5
FORWARD COLLISION AVOIDANCEWARNINGS4
LANE DEPARTUREWARNING4
FORWARD COLLISION AVOIDANCEAUTOMATIC EMERGENCY BRAKING3
FORWARD COLLISION AVOIDANCEADAPTIVE CRUISE CONTROL2
BACK OVER PREVENTIONAUTOMATIC SYSTEM BRAKING1
BACK OVER PREVENTIONREARVIEW SYSTEM BRAKING1
BACK OVER PREVENTIONWARNINGS1
ELECTRICAL SYSTEMINSTRUMENT CLUSTER/PANEL1
STRUCTUREBODY1

One complaint can name several systems, so shares can add to more than 100 percent.

Model-generated complaint tags

These labels are model-generated, not NHTSA data.

Failure modes
LabelCountShare of taggedMean confidence
loss of control1737.0%0.81
electrical electronic1123.9%0.84
mechanical failure613.0%0.81
restraint or airbag613.0%0.93
noise or comfort48.7%0.54
unclear12.2%1.00
visibility or lighting12.2%0.36
Severities
LabelCountShare of taggedMean confidence
moderate2860.9%0.83
high1226.1%0.98
low510.9%0.77
none12.2%1.00

Model: typesafe/jev-1.13-20260917; schema version: tag-v1. 46 tagged complaints of 46 complaints (100.0%).

Confidence is the model's own probability for the label it chose (0 to 1), not accuracy.

Model-generated labels on tagged complaints only. Model years 2013 and newer are tagged in full; 2012 in part (see tagged_share); earlier model years have no tags. NHTSA's own flags remain separate in the complaints block.

Recalls

See new recalls and investigations this week.

2 recalls.

26V046000

Date: 2026-01-26. Systems: ELECTRICAL SYSTEM.

Defect: 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. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMV (excerpt)

Consequence: An instrument panel display that fails to show critical safety information, such as the speedometer, tire pressure, or warning lights, increases the risk of a crash. (excerpt)

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. Owners may contact Kia Customer Service at 1-800-333-4542. Kia's number for this recall is SC361. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on February 9, 2026. (excerpt)

Do not drive: No. Park outside: No.

25V548000

Date: 2025-08-25. Systems: ENGINE AND ENGINE COOLING.

Defect: 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.

Consequence: A loss of drive power increases the risk of a crash.

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. Kia's number for this recall is SC349.

Do not drive: No. Park outside: No.

Investigations

0 investigations; 0 open.

Manufacturer communications

19 manufacturer communications.

Communications by system
SystemCount
ELE11
BOD2
OTA2
BACK OVER PREVENTION1
ELECTRICAL SYSTEM1
ENG1
TRA1

11035251

Date: 2026-07-22. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

TECHNICAL SERVICE BULLETIN: BODY DOMAIN CONTROLLER (BDC) REPLACEMENT (CA2515 Revision 1) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides information regarding the Body Do

11033217

Date: 2026-05-28. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may impr

11031905

Date: 2026-04-28. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

TECHNICAL SERVICE BULLETIN: BODY DOMAIN CONTROLLER (BDC) REPLACEMENT (CA2515) - This bulletin provides information regarding the Body Domain Control unit (a BDCa ) on certain 2025MY and 2026MY K4 (CL4) vehicles manufactured from May 1, 2025, through Feb 9, 2026. Due to a communication issue betwee

11031906

Date: 2026-04-14. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation on applicable Kia vehicles. The software downloads and USB preparation process is similar across all

11030344

Date: 2026-03-20. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.

TECHNICAL SERVICE BULLETIN: DCU COMMUNICATION LOGIC IMPROVEMENT - This bulletin provides the procedure to upgrade the Data Connectivity Unit (DCU) system software on some 2025a 2026MY vehicles listed in the table below. Kia has identified that Connected Car Services (CCS) functionality may intermit

11026698

Date: 2025-12-09. Type: Other. Systems: BACK OVER PREVENTION.

PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the driver while parking, by calculating distance based on the difference in signal

11026532

Date: 2025-12-02. Type: Over The Air. Systems: ELECTRICAL SYSTEM, ENGINE.

RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION SOFTWARE UPDATE FOR WARNING LIGHTS (SA621) - This Over-the-Air (OTA) software update is designed to update the Engine Control Unit (ECU) logic of certain 2025 K4 vehicles. This update improves the processing logic of the Engine Control Unit (ECU) to reduce

11023283

Date: 2025-09-13. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: ECM JUDGEMENT LOGIC IMPROVEMENT FOR DTC P218100 (SA621) - This bulletin provides information to upgrade the Engine Control Module (ECM) system software on certain 2025MY K4 (CL4m) vehicles produced from July 03, 2024 through April 28, 2025 equipped with an

11023288

Date: 2025-09-12. Type: Other. Systems: ELECTRICAL SYSTEM.

RELEASE NOTES: OVER-THE-AIR: SERVICE ACTION: SOFTWARE UPDATE FOR RCM (SA620) - This Over-the-Air (OTA) software update is designed to update the Roof Control Module (RCM) of certain 2025 K4 vehicles. This update is designed to improve software logic for a smoother sunroof response during one-touch

11022347

Date: 2025-08-22. Type: Other. Systems: ELECTRICAL SYSTEM.

PITSTOP: TECHNICAL OPERATIONS: DCU IDENTIFICATION AND DAIGNOSTIC AID - This Pitstop provides information on identifying the Data Connectivity Unit (DCU) in Kia vehicles equipped with Connected Car Navigation Cockpit (ccNC) and ccNC Lite head units, as well as a diagnostic aid when diagnosing Kia Con

Notes on this record

  • Complaints from the API and bulk file are merged and deduplicated by ODI number; the API alone misses records.
  • System and subsystem counts are numbers of distinct complaints, recalls or communications that name them. One record can name several systems, so shares across systems can add to more than 100 percent; a single share never exceeds 100 percent.
  • Recalls are counted once per campaign, investigations once per action and manufacturer communications once per NHTSA id, even when NHTSA lists several model names for the same record.
  • A sales denominator is a calendar-year proxy, not the population of vehicles still in use. Rates are copied from verified pipeline output.

Other names NHTSA uses

None listed.

Matched NHTSA models

Matched labels and complaints
NHTSA model labelComplaints
K446

Same model, other years

All model years | All Kia models

Other Kia models, 2025

Sources

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