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What 46 owners told NHTSA about the 2023 Kia Carnival Hybrid 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 (46)Crash / fire / injury (8)Body & structure (12)Electrical system (6)Engine (4)Chest Clip, Buckle, Harness (2)Fuel system (2)Lane Departure (2)Latches & locks (2)Seat belts (2)Steering (2)Brakes (1)

2 of 46 complaints match · Seat belts · clear filters

Mar 18, 2025Seat belts

The contact owns a 2023 Kia Carnival. The contact stated that the seat belt located in the rear middle row was inoperable. There were no warning lights illuminated. The contact stated that the seat belt failed to retract. The vehicle was taken to the local dealer, where it was diagnosed and determined that the seat belt needed to be replaced. The dealer ordered the part, which was on backorder. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 30,000.

NHTSA ODI 11648937

Dec 11, 2023Seat belts

Kia Carnival's 2nd row seta pretensioners are not working. In the vent of suddent breaks, the seat belts are not latching, and hence not holding the kids in the seats. We have faced this issue several times. Once my daughter came out of seat completely, since the seat belt didn't latch the belt. We took to the dealership(Kings Kia, Mason, OH), the technician agreed, there is problem with 2 seats, however, there is problem with all 3 seats. The dealership said they are still waiting for Kia corporate to send the new seat belt latch system, but there is no response from Kia yet.

NHTSA ODI 11559445

Working with the data? Download all 46 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 2023 Kia Carnival Hybrid Hev verdict →