Carnival (2026)
Data covers 3 NHTSA model names
Reliability Score
Complaints by Engine Code
GAMMA II + HEV
1.6LView details
Complaint Breakdown
GDI LAMDA III
3.5LView details
Complaint Breakdown
Show 1 additional engine variant with limited data
T-GDI THETA-III
2.5L 4-cyl TurboView details
Complaint Breakdown
Battery & Propulsion Reliability
Hybrid (HEV)
Battery & propulsion complaint analysis for the 2026 Kia Carnival
Too few field reports to rate this generation against peers yet. Most recently launched models accumulate complaints over the first 2-3 years.
What kind of battery complaint?
Among the 9 battery-related complaints, here's the type mix. These percentages describe what the complaints are about — not how reliable the vehicle is overall.
Hybrid system warnings, eCVT, motor-generator, hybrid transaxle.
Loss of power, drive unit, inverter, traction motor, DC-DC converter.
Propulsion battery defects, capacity loss, BMS faults, replacement claims.
Low-voltage battery deaths, common on EVs and hybrids that use a 12V for accessories.
Sample complaint excerpts
Hybrid Drivetrain
- [2026] URGENT SAFETY CONCERN/ISSUE On [XXX], while driving my 2026 Kia Carnival Hybrid SX Prestige, it lost all power without warning, leaving me unable to accelerate or control the vehicle. This created an unsafe situation as I was traveling at 40 mph when all power was lost. What happened to me was a serious safety hazard. The vehicle was brand new with only 1351 miles at the time. Several warning lig
- [2026] The contact owns a 2027 Hyundai Palisade. The contact stated that while initiating vehicle operation, the messages "Check Hybrid System" and "Stop Vehicle and Check Power Supply" was displayed. The failure was a recurring failure. The dealer was contacted and received the same messages. The dealer stated that the failure was associated with the 12-Volt battery in the vehicle that was low due to be
- [2026] While driving on an interstate during a heavy summer thunderstorm, the vehicle suddenly displayed a warning stating, "There may be a problem with the Battery Management System," along with a "Check Hybrid System" message. At the same time, the check engine light illuminated and the hybrid system stopped functioning without any prior warning. Approximately 10–15 minutes before the incident, I had d
Electric Propulsion
- [2026] URGENT SAFETY CONCERN/ISSUE On [XXX], while driving my 2026 Kia Carnival Hybrid SX Prestige, it lost all power without warning, leaving me unable to accelerate or control the vehicle. This created an unsafe situation as I was traveling at 40 mph when all power was lost. What happened to me was a serious safety hazard. The vehicle was brand new with only 1351 miles at the time. Several warning lig
- [2026] While driving on an interstate during a heavy summer thunderstorm, the vehicle suddenly displayed a warning stating, "There may be a problem with the Battery Management System," along with a "Check Hybrid System" message. At the same time, the check engine light illuminated and the hybrid system stopped functioning without any prior warning. Approximately 10–15 minutes before the incident, I had d
- [2026] I own a 2026 Carnival Prestige SX Hybrid and having loss of propulsion problems. After much research, and absolutely no help from KIA, I now think my problem is my foot, size 15, is too large to safely drive this vehicle. My shoe intermittently depresses the brake ever so slightly while I accelerate from a stop. This triggers the Brake-Throttle Override which temporarily cuts propulsion power.
High-Voltage Battery
- [2026] The floor railings above the battery, that allow the second row seats to slide, get hot. Extremely hot to the touch. Burning my children’s feet. Not sure if it’s related but the a/c does not stay cold when driving long distance and the HV battery just died last month for no reason. Brand new car.
- [2026] While driving on an interstate during a heavy summer thunderstorm, the vehicle suddenly displayed a warning stating, "There may be a problem with the Battery Management System," along with a "Check Hybrid System" message. At the same time, the check engine light illuminated and the hybrid system stopped functioning without any prior warning. Approximately 10–15 minutes before the incident, I had d
- [2026] What component or system failed: The hybrid battery management system (BMS) failed while driving. The dashboard displayed a Battery Management System error along with a lane assist warning. The vehicle then completely lost propulsion, no response from the accelerator pedal, while on an incline, causing the vehicle to roll backward down the hill. The vehicle is currently at the dealership (Kia Teme
12V Auxiliary Battery
- [2026] 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
- [2026] The contact owns a 2027 Hyundai Palisade. The contact stated that while initiating vehicle operation, the messages "Check Hybrid System" and "Stop Vehicle and Check Power Supply" was displayed. The failure was a recurring failure. The dealer was contacted and received the same messages. The dealer stated that the failure was associated with the 12-Volt battery in the vehicle that was low due to be
Source: classified from NHTSA complaint and recall data. "Battery-related" includes high-voltage propulsion battery, charging system, hybrid drivetrain, electric propulsion, regenerative braking, 12V auxiliary battery, and thermal-event complaints. Other complaints (suspension, steering, brakes, infotainment) appear in the engine and vehicle-level sections. Rates are absolute counts, not normalized per-VIN — high-volume models naturally produce more raw complaints than low-volume ones. Self-reported death and injury counts are capped per complaint to limit form abuse.
Owner Complaints by System
Complaints owners filed with NHTSA about the Kia Carnival, counted across every engine. A complaint can name more than one system.
Recalls (2)
Kia America, Inc. (Kia) is recalling certain 2022-2026 Carnival vehicles. Fuel may leak at the pipe connection between the fuel pipe and fuel rail.
Kia America, Inc. (Kia) is recalling certain 2025 Kia K4, 2025-2026 Sorento, Sorento Hybrid, Sorento Plug-In Hybrid Electric (PHEV), 2026 Sportage, Sportage Hybrid, Sportage PHEV, K5, EV9, Carnival, and Carnival Hybrid vehicles. Due to a software error, the instrument panel display may fail. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) numbers 101, "Controls and Displays" and 138, "Tire Pressure Monitoring System."
NHTSA Safety Ratings About NHTSA ratings
All Generations
Alternatives in Minivan
Frequently Asked Questions
What are the most common 2026-2026 Kia Carnival complaints?
Owners have filed 48 complaints with NHTSA about the 2026-2026 Kia Carnival. The systems they name most often are the electrical system, the transmission and the safety systems.
Is the 2026-2026 Kia Carnival a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 48 complaints with NHTSA about the 2026-2026 Kia Carnival. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2026-2026 Kia Carnival have?
NHTSA has 48 owner complaints on file for the 2026-2026 Kia Carnival as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2026-2026 Kia Carnival?
NHTSA lists 2 recalls covering some 2026-2026 Kia Carnival vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.
What should I check before buying a used Kia Carnival?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the electrical system, the transmission and the safety systems, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
What are the NHTSA crash test ratings for the Carnival?
The 2026 Kia Carnival received an overall N/A-star safety rating from NHTSA. Frontal crash: 4 stars. Side crash: N/A stars. Rollover: 4 stars (14.0% rollover probability). Electronic Stability Control: Standard. Forward Collision Warning: No. Lane Departure Warning: No. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.
Data from NHTSA federal complaints database. 48 complaints analyzed. Data confidence: moderate. Last updated: 2026-10-12.