2025 Kia Carnival engine problems
15 owner complaints filed with NHTSA name the engine on the 2025 Kia Carnival — 13% of all complaints for this model year.
What owners report
“We have been having persistent safety issues with this vehicle. The issues have ranged from unsecured gas cap to loss of power. We’ve also had severe transmission issues where the car will not shift out of first gear. This happened on the Garden State Parkway and nearly caused an accident as the…”
filed May 28, 2026
“For the third time the 2025 KIA Carnival Prestige I own lost power while driving on the interstate! Without warning, the vehicle would no longer respond to the accelerator pedal. No matter what I did I could not get the vehicle to accelerate past 35 mph. The minimum speed limit on the interstate is…”
filed May 27, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Engine problems in other Carnival years
| Year | Reports | Share |
|---|---|---|
| 2026 Carnival | 1 | 5% |
| 2024 Carnival | 7 | 11% |
| 2023 Carnival | 4 | 8% |
| 2022 Carnival | 16 | 12% |
Other reported problem areas on the 2025 Kia Carnival
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.