2024 Kia Carnival Problems

Incident description: While driving, the vehicle’s dashboard illuminated all warning lights (ABS, traction control, battery, check engine, forward safety system) and the engine revved to approximately 8,000 RPM with unintended rapid acceleration. Driver had to apply hard braking to maintain control and avoid a collision. A nearly identical event occurred approximately one month earlier while driving on the highway, at which point the vehicle suddenly braked hard on its own. The vehicle has been at the dealership for repair a combined 38 days across two visits. The dealer initially attributed the first event to a failed alternator voltage regulator, replaced it, but the same warning codes and behavior returned on the second occasion. Crash/injury: No collision occurred; avoided through evasive braking. Speed: Highway speed (both instances). Incident description: While driving, the vehicle’s dashboard illuminated all warning lights (ABS, traction control, battery, check engine, forward safety system) and the engine revved to approximately 8,000 RPM with unintended rapid acceleration. Driver had to apply hard braking to maintain control and avoid a collision. A nearly identical event occurred approximately one month earlier while driving on the highway, at which point the vehicle suddenly braked hard on its own. The vehicle has been at the dealership for repair a combined 38 days across two visits. The dealer initially attributed the first event to a failed alternator voltage regulator, replaced it, but the same warning codes and behavior returned on the second occasion. Crash/injury: No collision occurred; avoided through evasive braking. Speed: Highway speed (both instances).

Driver side passenger back sliding door will not open or close properly. Door will jam and make a loud noise or will not open when trying to open. Took it the dealership 4 times they replaced the motor but the issue continues.

The contact owns a 2024 Kia Carnival. The contact stated that while driving 65 MPH, the vehicle jerked violently and experienced a loss of motive power, with reduced power. Several unknown warning lights illuminated. The vehicle was taken to a dealer; however, the vehicle was not diagnosed or repaired because the warning lights were no longer illuminated. The contact continued to drive the vehicle, and the failure recurred. The vehicle was towed to the dealer and was awaiting diagnostic testing. The manufacturer was notified of the failure. The failure mileage was 48,320.

Our 2024 Carnival has had a recurring engine oil leak that has required the vehicle to be left at the dealership 4 times for the same issue. Each time we get the van back the repair lasts about 1-3 weeks (depending on how often it's driven). Oil continues to leak from the engine area, creating risk of engine damage or a potential fire hazard if oil contacts hot components. The issue has not been resolved despite repeated repair attempts under warranty. The Carnival has 38,092 miles on it, and has been in the repair shop over 4 times. The 1st time it was put in the shop the van has 34,420 miles on it. Each time it has been left at the dealership for 9 - 17 days while the repairs were made. We have brought it to the same dealership each time and they have been very sympathetic and helpful. Not only does this issue cause the risks mentioned above, but it has ruined the concrete in my garage as well as added oil to the roadway which could cause an accident. I have all the repair orders from the first 3 repairs that I will attach. However I do not have thee current one because the vehicle is currently being repaired for the 4th time and I haven't received the finalized repair order documents. I can update this claim once the repairs are completed. I will be contacting Kia tomorrow and wanted to have a claim number started.

My 2024 Kia Carnival smells strongly like gasoline after about 15–20 minutes of driving. The smell gets worse at idle, worse the longer I drive, and seems even stronger with the A/C on. Two dealerships in Las Vegas have told me this is “normal.” Meanwhile, I can’t park it in my garage because the smell fills my house. I’ve had headaches and nausea, and my kids have complained of headaches and stomach aches too.

Recall SC368 was performed. After the recall repair, I began smelling gasoline. The dealer has diagnosed a separate fuel-system issue requiring multiple parts including replacement of the fuel tank. More details: My vehicle underwent a safety recall for a fuel leak/fire risk. Following that repair, I developed a strong gasoline odor. My Kia dealer has now identified a separate fuel-system problem that requires replacement of multiple components, including the fuel tank. The dealer has informed me that multiple Carnivals in Arizona are experiencing the same problem and that a replacement fuel tank is currently unavailable nationwide. I do not have a repair date and I do not consider the vehicle safe to drive.

Out of nowhere, we started our vehicle that was no more than a year old, and all of the emergency alert indicators on the dash came on. All of the warning lights in the dash. The power steering went out and would go from very stiff to very loose. the car would shutter and then drive normal for a few min and then slow way down without warning. Again, all dash warning lights and alarms would go off. This first appeared on [XXX], we took to the Kia service on Nov. 17, 2025, and it was been in the shop with no repair since that day and todays date is Jan, 12, 2026. As of today they still do not know what is wrong with the vehicle and have no end in sight. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Got in my vehicle one day and noticed fluid dripping from the steering column. I took it into JT's Kia in Rock Hill, SC. At first they told me they were going to wipe off the "grease" then told me they needed to order a whole new steering column. I asked if it was still safe to drive and the service technician said no. I have heard this is a common problem with 2024 Kia Carnivals. Hopefully if enough people report the problem, a recall will be issued.

The contact owns a 2024 Kia Carnival. The contact stated that while her husband was loading the child into the car seat. The rear button for the door was depressed by the child. The husband became stuck in between the sliding doors. No warning lights were illuminated. The contact sustained injuries to his previously injured rotary cuff, but medical attention was not provided. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 35,815.

On 11/12, my 2024 Kia Carnival was parked as my children were getting settled in the vehicle. My son lifted the second-row passenger seat on the passenger side using the handle provided to access the third row. As he did so, the seatback suddenly collapsed forward with unexpected speed and force and locked in the forward position. Nothing broke, and the mechanism did not appear to jam. The seat moved along its normal path, but it did so so aggressively that it crushed my [XXX] daughter’s left leg while she was strapped into her car seat directly next to it. She was asleep, the car was not moving, and the seat feature was being used in a normal way to access the third row. The force of the collapsing seat fractured her left tibia, confirmed by X-ray. She is currently in a medical boot and under a doctor’s care. This vehicle has no accident history and no modifications. We have multiple witnesses (myself and our children), photos of the injury, and a video that shows how fast and forcefully the seat folds. This presents a serious safety risk in a family vehicle where children commonly sit behind folding second-row seats. A seat access mechanism should not be capable of moving with enough force to break a toddler’s bone in a parked vehicle. I am requesting that NHTSA investigate this seat design and its operation in the 2024 Kia Carnival. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2024 Kia Carnival. The contact received notification of NHTSA Campaign Number: 24V025000 (Structure). The contact stated that the driver's side roof molding was detaching, and the contact attempted to secure the molding in place several times. The dealer was contacted to schedule an appointment for the recall repair, but the dealer informed the contact that the recall repair had already been performed while the vehicle was at the dealer for an unrelated service, a month prior. The contact stated that the dealer had failed to perform the recall repair correctly because the failure persisted. The manufacturer was notified of the failure, and a case was filed; however, no assistance was provided. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was approximately 25,000.

The passenger automatic sliding door closed on my arm and required a lot of effort to push it back open. I’d it was my child standing there he would have been seriously injured. The problem has been reproduced, but I’m terrified to actually leave my arm there to see if it will close on it again. Nothing was inspected and there were no warnings prior to this happening.

On our 2024 KIA Carnival, which my wife is the primary driver, the blind spot warning on the passenger side does not work all the time. Driver side is 100% okay. She drives on I40 and hwy111 to and from work daily, and when passing on the left, she looks for the red triangle to let her know it is clear to get back in the right lane. It only works about 50% of the time and the dealership has worked on it three times unsuccessfully, so we put in a complaint to KIA corporate in June and they have been very unresponsive. We keep the vehicle clean, so it is not that. She just wants it to be reliable for safety reasons and it is not. It probably just takes a different set of engineering eyes to look at it but KIA seems like a dead end so far. Please help us. Thanks. BTW, the people at the dealership have been very good to us, we just believe engineers at a higher level need to solve this problem.

Incident description: While driving, the vehicle’s dashboard illuminated all warning lights (ABS, traction control, battery, check engine, forward safety system) and the engine revved to approximately 8,000 RPM with unintended rapid acceleration. Driver had to apply hard braking to maintain control and avoid a collision. A nearly identical event occurred approximately one month earlier while driving on the highway, at which point the vehicle suddenly braked hard on its own. The vehicle has been at the dealership for repair a combined 38 days across two visits. The dealer initially attributed the first event to a failed alternator voltage regulator, replaced it, but the same warning codes and behavior returned on the second occasion. Crash/injury: No collision occurred; avoided through evasive braking. Speed: Highway speed (both instances). Incident description: While driving, the vehicle’s dashboard illuminated all warning lights (ABS, traction control, battery, check engine, forward safety system) and the engine revved to approximately 8,000 RPM with unintended rapid acceleration. Driver had to apply hard braking to maintain control and avoid a collision. A nearly identical event occurred approximately one month earlier while driving on the highway, at which point the vehicle suddenly braked hard on its own. The vehicle has been at the dealership for repair a combined 38 days across two visits. The dealer initially attributed the first event to a failed alternator voltage regulator, replaced it, but the same warning codes and behavior returned on the second occasion. Crash/injury: No collision occurred; avoided through evasive braking. Speed: Highway speed (both instances).

Windshield spontaneously cracked while sitting still. Vehicle was parked on a hot day with AC running and windshield burst as if it were shot and cracks streaked across entire windshield by next day causing visibility issues. We are not aware of vehicle being hit by anything at the time it burst.

On Monday 07/24/2023 (a clear sunny day) our less than 1 month old Kia Carnival spontaneously developed a crack in the middle of the drivers side of the windshield and over the course of a few hours this crack grew to over half the windshield. outdoor temperature was around 82 degrees. There was no impact that I know of and when you look at the windshield there is no evidence of an impact. No chip, no star, nothing. It looks like the crack started from the literal edge and spread to the middle. Having a brand new vehicle PLUS having bought all the extended warranties I thought, ok we are covered. The Kia dealership said "must have been an impact" and "we don't do glass". They also told me "it's safe to drive, the windshield won't shatter". Ok it's got a crack you can literally see growing and they are trying to tell me its perfectly safe to drive? This is clearly a manufacturing defect and the manufacture did not seem interested in it. I have serious concerns about the safety and reliability of this windshield even after replacement. when I was researching companies to replace the windshield because the dealer told us "we don't do glass" I found this is a common complaint (there's even a class action lawsuit against the Telluride for windshield failure). If I thought this was a manufacturing defect before I am convinced of it now.

On 8/25/2026 I dropped the vehicle at Plaza Kia, 2699 Nostrand Ave, Brooklyn, NY 11210 (Kia Repair Facility #7119189) for four open recalls: PI2501, PI2602, SC320, and SC368. Brakes were functioning normally at drop-off. Per repair order [XXX] dated 8/26/2026, only PI2501 and PI2602 (second-row seat recalls) were performed; SC320 (EGR valve) and SC368 (high-pressure crossover fuel pipe) were not completed — parts on special order. The dealer's multi-point inspection sheet, printed 8/26/2026 12:36 PM, marked brake fluid level/condition and brake system components as OK/green. The technician time log on the RO shows 0.0 actual hours for that day. The brake lining inspection panels on the sheet are blank. The dealer returned the vehicle to my residence via valet on 8/26/2026. On first use, the brake pedal was extremely hard and stiff with the engine running; the vehicle would only slow with full-force pedal pressure. I nearly collided with a parked vehicle exiting the parking space. I parked and did not drive it further. A vacuum-assist test (pump pedal engine off, hold, start engine) showed the pedal sinking only slightly, and braking under drive felt like engine-off braking — partial or total loss of power assist. Kia Roadside Assistance towed the vehicle to Plaza Kia. Plaza Kia refused to tow it themselves. Plaza Kia has since diagnosed a brake master cylinder failure and stated parts are approximately two weeks out. Repair is under warranty; updated RO pending. Kia Consumer Affairs case #[XXX] has been opened. Summary: brake power-assist failure on a 2024 Carnival at ~33,000 miles, occurring in dealer custody or immediately upon return from recall service, on the same day the dealer's inspection cleared the brake system. No prior brake symptoms. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While stopped, the brake pedal drops to the floor and the vehicle begins to roll forward. I went to the dealership and told them what happened, they told me there is no recall on this, and it is a "normal part of driving". This is not a normal part of any braking system. The pedal should not drop to the floor while stopped with your foot on the pedal. No warning system lights that came on. This happens frequently. You have to start pumping the brake repeatedly to get the vehicle to stop. It will eventually raise off the floor.

My child’s seat buckles are still not locking into place. I’ve contacted Nuna and their response was they needed 24-48 hours to find a solution as I’ve already don’t the seat recall solution. But they told me I can’t use this seat for my child. So I’m stuck without a car seat until they find some solution for me. I found this issue because my child was able to move the seat straps on his own, while I was driving down the highway.

I hit a piece of 4X4 in the road that fell off of the vehicle in front of me. In doing so, I thought I busted my front driver’s side tire, but later found out at the dealership that my rim is completely split. I'm baffled at the fact that the wheel failed as severely as it did, so were the technicians who witnessed the damage. I was driving 50mph when it happened & I'm worried about major safety issues & the integrity of the other wheels. I was told by the service advisor that a new wheel could be ordered for $1,100.00 however, the delivery is backdated with no delivery date in sight. I'm currently driving on a spare tire that is only good for driving 50 miles. I drive approximately 68 miles per day to get my children to & from school & to & from work & I have been driving on this spare tire since the incident occurred. I feel this is a safety hazard to not only myself & my family, but other drivers on the road. I am concerned that other Carnival drivers could hit a pot hole or speed bump just right & have the same thing happen to them or cause them to lose control of the vehicle. **I would like to upload a photo but that feature does not appear to be working from the button below, please contact me if you wish to have the photo.**

I purchased this 2024 Kia Carnival on 2/7/2026 with less than 10K miles. The vehicle has died while I was driving 4 different times. Twice each day that it happened. The first time was on 4/7/26. My car died on the way home from getting my kids from school after fixing a flat tire. The check engine light came on after getting a jump and when I took it to Auto Zone the battery was fully charged and the codes were for the Power Train, which didn't make sense for a brand new car. Miracle Mart told me that Kia needed to be utilized for any issues because I purchased the vehicle as is. Their solution was to tighten the "loose cables". On 4/25/26 the car died again two more times. Something is terribly wrong with this car.

"Continuous engine oil leak for 12 months. After 4 failed repair attempts, the dealer used liquid sealer instead of a gasket. This is a deceptive repair that creates a severe fire hazard. The leak is still active today, March 2026."

Almost all cars next to me are unable to interpret my signal lights due to I) rear signal lights being so low and not at brake lint level, and ii) from signal lights being near the grill and not the corners. This is a huge problem when changing lanes. Same with the reverse light being only on the rear bumper level - it is common for pedestrians and cars to not notice that the car is about to reverse. This is very dangerous and should not have been passed. Kia must remedy this issue at once considering how many lives are at risk.

Seat belt is torn

Car hit a ditch at over 40MPH and rolled over on its side and no airbags deployed

The steering wheel was clicking at low speeds (turns after stops, turns in reverse and while parking). The Kia dealer initially said it was an improperly routed air bag harness and said they fixed it. The noise returned within a day. When I brought it back, they identified cables from the air bag were slipping from the hold down clip causing the air bag wires to rub on the steering wheel. Service advisor noted the airbag and clock spring harness were not being held down by the wire hold clip. The technician put two zip ties to attach the wire harness to the hold down clip.

Almost all cars next to me are unable to interpret my signal lights due to I) rear signal lights being so low and not at brake lint level, and ii) from signal lights being near the grill and not the corners. This is a huge problem when changing lanes. Same with the reverse light being only on the rear bumper level - it is common for pedestrians and cars to not notice that the car is about to reverse. This is very dangerous and should not have been passed. Kia must remedy this issue at once considering how many lives are at risk.