2025 Kia Carnival Hybrid engine problems
19 owner complaints filed with NHTSA name the engine on the 2025 Kia Carnival Hybrid — 35% of all complaints for this model year.
What owners report
“My 2025 Kia Carnival Hybrid is experiencing repeated electrical and hybrid battery failures. The battery has died multiple times, and the vehicle has shut off while driving, including at higher speeds. When the vehicle shuts off, all electrical systems reset, warning lights flash, and the dashboard…”
filed Jul 26, 2026
“Van made a loud pop noise and lost power. The HSG belt tensioner spring fell off it's seat loosing tension on the HSG belt. Was unsafe but luckily it happened before getting on the freeway, and coasted into a parking lot. Yes, it's at the dealership getting a replacement tensioner and belt. I…”
filed Jun 16, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Other reported problem areas on the 2025 Kia Carnival Hybrid
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.