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What 20 owners told NHTSA about the 2026 Kia Carnival Hev

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (20)Crash / fire / injury (3)Electrical system (5)Transmission & drivetrain (4)Speed control (3)Backup camera & sensors (2)Driver assistance (2)Airbags (1)Body & structure (1)Engine (1)Lane Departure (1)Seat belts (1)

5 of 20 complaints match · Electrical system · clear filters

May 22, 2026Transmission & drivetrainElectrical system

The contact owns a . The contact stated that while parked when the brake was depressed, press start button, when put in reverse, it says gear is selected, the vehicle stayed in neutral. This happens intermittently. The stop button was pressed, all of the instrument panel warning indicators would not illuminate. When pressing p for parking to engage parking, it appeared as if it was in park; however the vehicle unexpectedly reversed. The vehicle was able to be stopped. The vehicle was taken to the dealer where the issue could not be duplicated. The manufacturer was not notified of the issue. The approximate mileage was 2,200.

NHTSA ODI 11739601

May 19, 2026Electrical system

Battery died at under 3,300 miles. After roadside came and jumped the batter, it died again after two days. Jumped again for the second time, when driving the car around it would randomly shut off even when the car is moving at higher speeds on freeway. The shut off would be for just one second and comes back on - everything starts resetting. And goes to user authoriztions notifications. Car shut off three times while driving around.

NHTSA ODI 11738682

Apr 1, 2026Electrical systemSeats

2026 Kia Carnival MPV Hybrid SX Prestige(Exterior: Astra Blue Interior: Tuscan Umber / Off-Black) purchased December 2025. Two separate safety-related defects have gone unresolved for 31+ cumulative days across two dealer repair visits. DEFECT 1 — INSTRUMENT CLUSTER: Instrument cluster screen goes blank while driving, eliminating speedometer, TPMS, and all warning indicators. First observed February 2026. Dealer visit February 13–17 (4 days): technician said could not replicate. Defect recurred. Kia has since issued a federal safety recall confirming this exact defect — citing FMVSS noncompliance and stating the blank screen increases crash risk due to a software error causing overheat protection mode. Vehicle was at dealer for an active safety recall defect that went undiagnosed during a repair visit. DEFECT 2 — SEAT MODULE: Second-row seat module failed. Vehicle returned to dealer March 5 (still there, 27+ days). Wiring harness replacement attempted approximately March 21 — failed, defect persisted. Kia Engineering formally escalated approximately March 24. Seat module ordered but not yet installed. No resolution or completion date provided. Vehicle has been out of service 31+ cumulative days. Safety recall defect went undetected during prior dealer repair visit. Both defects remain unresolved on a vehicle purchased just 97 days ago.

NHTSA ODI 11728640

Feb 25, 2026Electrical systemBackup camera & sensors

This new 2026 Vehicle faced multiple issues within a few weeks of purchase as stated below. 1. The instrument display panel or the main display screen of the car stopped working. The screen was completely blank and would not turn on. (confirmed and reproduced by Kia dealer, service order attached) 2. An electric short caused the radio to fail (confirmed and reproduced by Kia dealer, service order attached) 3. The car battery died, rendering the car completely unresponsive. The car had to be towed to the Kia Dealer. (confirmed and reproduced by Kia dealer, service order attached) All of the above 3 issues happened one after the other. The first issue essentially disabled safety features of the vehicle as the display panel that displays rear view camera, camera monitoring system (CMS), etc was not able to display any information. An eventual electric short and a dead battery rendered the vehicle inoperable. The official Kia dealer attempted to diagnose and repair the vehicle. The vehicle was at the dealer service for 15 days. The dealer initially suggested that a part needs to be replaced and is in backorder till May 2026. However subsequently the dealer then claimed that the vehicle is now operating normally and should be taken by the customer. No root cause of the electric short and battery and screen failure was disclosed. Also contrary to what is stated in the service order, the service manager at the dealer verbally suggested that they did not replace the malfunctioning component.

NHTSA ODI 11720576

Nov 26, 2025Electrical system

Vehicle parked for 48 hours (Sunday 23 Nov evening) under carport, no keys near it. When approached on 26 Nov 10am , it was found with dead battery. Nothing was on when it was parked.

NHTSA ODI 11701699

Working with the data? Download all 20 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2026 Kia Carnival Hev verdict →