2026 Kia EV9

The OEM Hankook iON tires (285/45R21) on my 2026 Kia EV9 GT Line experienced acoustic foam delamination — the sound-dampening foam bonded to the interior liner of the tire separated and is moving freely inside the tire at highway speeds. At speeds above 55mph the steering wheel and car start to vibrate. At 70mph the vehicle becomes undrivable and feels as though the wheels may detach. This creates a serious and immediate safety risk to myself. I have largely avoided highway driving since the onset of this issue due to safety concerns. The problem was confirmed by the Kia dealership service advisor who performed a road force balance on June 15, 2026 — the technician confirmed the front two tires were off balance and needed replacement (but didn't save the report, their mistake). The road force balance did not resolve the issue. The service advisor also verbally confirmed that multiple other EV9 customers at the same dealership are experiencing the identical issue with no resolution, and that one customer has been waiting over three months while driving a loaner vehicle. The vehicle was inspected by the Kia dealership on June 12 and June 15, 2026. Kia Consumer Affairs was contacted and a case was opened on June 22, 2026 (Case #26202152). The assigned case manager never contacted me despite three follow up calls over three weeks. Kia Consumer Affairs ultimately directed me to contact Hankook — however Hankook's own published warranty process requires claims to be filed through authorized dealers, not consumers. There were no warning lamps or messages prior to onset. The vibration appeared suddenly at approximately 7,400 miles. The vehicle drove normally for several months prior to this onset with no vibration at any speed. The sudden onset after months of normal operation confirms this is a defect, not a vehicle characteristic. The issue has persisted since first appearing. *Video documentation of the vibration at highway speed is available upon request*

NHTSA ID

11753347

Incident

Jun 1, 2026

Beginning at approximately 104 miles (shortly after delivery at 75 miles), this vehicle exhibits a persistent vibration felt through the steering wheel, seat, and floorboard at highway speeds — specifically beginning around 55 mph, again at 61–63 mph, and most noticeably between 68–74 mph. A second defect involves rear-end instability where the rear of the vehicle feels loose and sways side to side over bumps and at higher speeds. Five repair attempts across two authorized Kia dealerships have failed to resolve either concern. A Kia Field Technical Specialist attributed the vibration in writing to the vehicle’s design (center console and floor-mounted captain seats). An independent inspector arranged by BBB Auto Line confirmed both defects on July 2, 2026. This appears to be a platform-level issue affecting multiple 2026 EV9 vehicles based on owner reports.

NHTSA ID

11752849

Incident

Mar 21, 2026

Since taking delivery on June 20, 2025, this vehicle has exhibited a vibration at highway speeds, most severe at approximately 72 mph. The steering wheel visibly shakes and the vibration is felt through the steering column. It is fatiguing over long drives and I have become unwilling to use the vehicle for family highway travel. I reported it to the selling dealer within days of delivery. Authorized Kia dealers have attempted repair four times over thirteen months, including tire replacement, multiple road force balances, and alignments. The dealer has now tested the vehicle with the original factory wheels and tires, an aftermarket set, and a known-good set of wheels and tires from another EV9, and confirmed in writing that the vibration is still present in all three configurations. The dealer has additionally found excessive road force on the original factory tires on two separate occasions. The dealer has advised me that Kia may consider this a normal characteristic of the model and that no further repair is expected. No crash or injury has occurred.

NHTSA ID

11750444

Incident

Jun 20, 2025

I was driving down the freeway driving at the speed of traffic. My vehicle started beeping aggressively, a red indicator started flashing over the frunk area of the vehicle representation in the dash and my vehicle entered red turtle mode. This red turtle mode severely reduced the vehicle's speed and ability to maneuver on the freeway. I was almost struck by numerous vehicles while attempting to get to the side of the road. I had been driving in the number 3 lane of a 5 lane freeway where lane 1 was an exit only offramp. Once I got to the side of the road, I power cycled the vehicle. when that didn't revolve the red turtle issue. I pressed the frunk open button. I heard the opening mechanism actuate. I then reseated the frunk latch and closed the frunk. Once the vehicle was turned back on, all issues were resolved and the vehicle behaved as normal.

NHTSA ID

11748295

Incident

Jun 28, 2026

The vehicle's front windshield glass failed catastrophically from minimal, routine roadway debris on two separate occasions within a single week.While driving at normal highway speeds, a microscopic stone or pebble impacted the windshield. Instead of causing a minor, isolated cosmetic chip, the acoustic laminated glass immediately developed an expansive linear stress fracture that rapidly spread across the driver's direct line of sight within minutes. This identical failure occurred twice in the span of 20 days, indicating a severe structural vulnerability, manufacturing defect, or excessive frame tension that makes the glass highly fragile under normal driving conditions.Component Availability: The vehicle and the cracked windshield component are currently intact and available for inspection upon request.Safety Risk: The rapid propagation of the cracks across the driver's field of view creates an immediate visibility hazard while navigating at highway speeds. Furthermore, the brittle nature of the glass compromises the structural integrity of the windshield, which is a critical safety component for roof crush protection and proper passenger airbag deployment in the event of a collision.Dealer/Independent Confirmation: The vehicle is being scheduled for an inspection and full windshield replacement at an authorized automotive glass repair facility to address the structural failure.Inspections: The damage is currently being documented and inspected by my comprehensive auto insurance provider as part of the replacement claim process.Warning Symptoms: There were absolutely no warning lamps, messages, or prior symptoms. The failure occurs instantly upon the smallest impact due to what appears to be extreme built-in structural tension.

NHTSA ID

11746361

Incident

Jun 24, 2026

ICCU failure. Total and sudden loss of power. No acceleration. "Limp mode" activated for 5 miles before total shut down.

NHTSA ID

11739411

Incident

May 18, 2026

While making a left turn at a four-way intersection, the passenger side front door opened the latch failed. This vehicle is equipped with motorized door handles that retract/flush when the vehicle is in drive indicating that the doors are locked. The door handles were retracted while driving the vehicle and making the slight left turn. During the turn, the passenger side front door opened and was a jar that could be indicated on the dashboard as well. This would put anybody at risk sitting in the passenger seat or causing an accident from the malfunction and alarm of the door. The vehicle was examined by a service department of a Kia dealership and parts of the door latch and or handle were replaced according to the repair order.

NHTSA ID

11728939

Incident

Nov 7, 2025

ICCU failure, code P1A9096.

NHTSA ID

11728578

Incident

Mar 28, 2026

TECHNICAL SERVICE BULLETIN: FRONT SEAT SLIDE MOTOR NOISE (CA2603) - This bulletin provides information to remove the seat slide motor tube from the power front seats on certain 2026MY EV9 (MV1a) vehicles produced from January 2, 2025, through January 3, 2026. The subject vehicles may exhibit a buzzing noise while the user operates the front power seat slide (forward and rearward) functions. This condition does not affect seat functionality.

RELEASE NOTES: OVER-THE-AIR: SOFTWARE UPDATE FOR DATA CONNECTIVITY (ELE413 Revision 2) - This Over-the-Air (OTA) software update is designed to update the Data Connectivity Unit (DCU) logic of certain 2025 - 2026MY Carnival, EV9, K5 and Sorento vehicles. This update is designed to improve the vehicle’s network communication performance.

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 improve system performance, enhance existing features, and apply the latest operating software for supported vehicles (2021-2026MY All Models).

TECHNICAL SERVICE BULLETIN: SERVICE ACTION: FRONT SEAT SLIDE MOTOR NOISE (SA647) - This bulletin provides information to remove the seat slide motor tube from the power front seats on certain 2026MY EV9 (MV1a) vehicles produced from January 2, 2025, through January 3, 2026, that are in dealer stock only. The subject vehicles may exhibit a buzzing noise while the user operates the power seat slide (forward and rearward) functions. This condition does not affect seat functionality.

PRODUCT IMPROVEMENT CAMPAIGN: OWNER NOTIFICATION (PI2601A) - This document is the owner notification advising that Kia is conducting a Product Improvement Campaign on 2024-2026 MY EV9 vehicles to replace the passenger-side wiper arm on your vehicle with an improved wiper arm of a different shape and angle to increase the clearance between the wiper and windshield cowl.

TECHNICAL SERVICE BULLETIN: PRODUCT IMPROVEMENT CAMPAIGN: PASSENGER SIDE WIPER ARM REPLACEMENT (PI2601A) - This bulletin provides the service procedure to replace the passenger-side (RH) windshield wiper arm on certain 2024-2026MY EV9 (MV1, MV1a) vehicles listed in the table below. During winter conditions, the windshield wipers may become temporarily inoperable due to accumulated snow on the windshield or cowl area. Kia has developed a newly designed passenger-side wiper arm of a different shape and angle to increase the clearance between the wiper and windshield cowl.