KIA Complaints

bought car from carmax. engine knock sensor went bad and engine is knocking. kia states engine is not origional and was taken from a junk yard, both kia and carmax are refusing to fix eventhough I am doing payments and it is a known kia issue for this car. Kia charged me 350$ to run test and cleared the light but informed me my engine is going to blow. carmax is refusing to do anything but still wants us to pay the 9k we owe on the car eventhough its broke.

Warning lights on while driving. The emergency triangle, collison warning, break warning, both turn signals, and departure warning lights were illuminated. We were concerned of causing damage to the vehicle and pulled over. Dealer knows of issues in CA and AZ with other Sorentos. Dealer said it is due to camera overheating; the camera housing is metal and therefore causes this issue. No known fix and we are apprehesive to drive it. KIA customer care had no information and only said to go to dealer when lights are on so a code can be pulled. I believe the housings need to be replaced if that is the case and if there is a true issue with the vehicle I cannot distignuish between "camera" or mechanical when lights come on.

It was roughly 2000 miles since my last oil change on my Kia Sportage. A spot of oil appeared in my driveway. I thought it could be from a delivery truck. I started parking my car in another spot and didn’t see anymore oil on the pavement. Three days later the low oil light came on. I had my car towed to a Mavis tire center they found that the oil drain plug was loose. They told me the car needed to go back to the dealership. They gave me a copy of a memo that they have sent to all of their shops reporting that NHTSA is investigating this problem with Hyundai and Kia vehicles. The Kia dealership is not concerned about this. The documentation for this service says last visit we did not tighten the drain plug properly and another shop confirmed that. Please check oil level, drain plug, and filter to ensure proper levels/tightness and report MISC drain plug was found loose. They observed it for two hours. They also noted that mileage coming into the shop was 61212 mileage, out of the shop was 61212. Please note they had not done previous oil change as noted in their documentation. I have a service contract with this Kia dealership where I bought the car. I stopped going there because they recommended that three of my brakes needed to be changed on March 4, 2025. In spring of 2025 I had two different mavis shops. Tell me that my brakes did not require changing. One set had 30% wear, the other set had only 20% wear. It is now June 25, 2026. My break still have not required being changed. That was not recommended Service today either.

Backup camera intermittently glitches and cuts to a black screen. Display will also occasionally appear darker than normal. Concern began suddenly with no known cause. It first occurred after vehicle was parked for 10-11 hours.

The car burns oil within a week of getting an oil change. It was only driven a 200 miles before all of the oil was burned out. This has been a consistent issue with this car that the oil burns at an extreme rate. This is a safety risk as it could lead to engine overheating, the engine could stall out due to the fast burning of the oil, or a potential fire hazard while driving. The oil light will come on for a second and at that point, the oil is already EXTREMELY too low. I brought the car to the mechanic and they have told me multiple times that there is no leak or anything. The mechanic says that the car simply is burning oil too fast.

Multiple times the car has shut off while driving. It did receive the PNSS sensor thing from the dealership 2 years ago. It has done this while my wife and kids were in the car in a busy roundabout. There are known engine issues with this model. Kia dealership is dragging their feet and “can’t recreate the issue.” (because it happens randomly) They ran “tests” and they all came back with “no issues.” Dealer states that they are waiting to hear back from the tech line at Kia. Service advisor said to me that they may just give me the car back because they can’t find anything wrong. And the “we would essentially have to wait for a complete component failure.” It is available to be inspected. There were no warnings at all and it has done it at random times in seemingly normal conditions. It receives routine maintenance and after my last oil change my mechanic (not from Kia) said that they found metal shavings in the oil and that there was only 1 qt of oil. And recommended that I talk to the dealer about engine replacement. The last time it shut off was June 4 and and it has been at the dealership since June 15th.

My 2015 Kia Sorento is experiencing a catastrophic structural failure of the exhaust system where the front manifold catalytic converter has internally collapsed and broken apart. This is a severe safety hazard because the physical blockage of the exhaust flow creates massive engine backpressure, risking sudden engine stalling, unprompted deceleration, and power loss at highway speeds, which increases the risk of a crash. Furthermore, the blocked exhaust gases generate extreme temperatures under the hood, presenting a distinct vehicle fire hazard. I have proactively maintained this vehicle and had all previous safety campaigns addressed, including a complete engine replacement and the required engine control software updates. Despite these recalls being fully completed, the vehicle has still suffered this severe exhaust system failure. The Check Engine light was on, and diagnostic scanning shows fault code P2096. A professional dealer assessment confirmed a "collapsing manifold catalytic converter," "contamination of honeycomb on front of rear catalytic converter," and severe "contamination on the O2 sensor." An oxygen sensor replaced in December 2025 has already been destroyed by the upstream ceramic debris. Abrasive ceramic dust from the melting manifold structure is actively being drawn back into the engine cylinders, threatening to destroy the newly replaced engine. This failure mirrors the exact physical mechanics and safety risks outlined in Kia's previous safety campaign SC176 (NHTSA Campaign 19V-120). Despite experiencing the identical defect and safety threat on a fully updated vehicle, my VIN was excluded from that specific campaign, and Kia corporate has flatly denied goodwill assistance. I am filing this complaint because this known safety defect poses an active threat to vehicle control and occupant safety. I've attached the current repair assessment, and can provide the assessment of the previous replacement of the O2 sensor when warranted.

The vehicle started loosing engine power. The vehicle stalled while driving 5-6 times, this posed a danger to driver, passengers, and others. A car accident can easily happen when the engines dies. Power to all systems was lost, including steering and brakes. No warning lights or check engine lights appeared at anytime, symptoms started a week before. Vehicle was approx 3 quarts of oil low. It was about 2 months from previous oil change. Other 2021 Kia Seltos have an open recall for defective piston rings (SC209 or SC336.) The vehicle was taken to the nearest Kia dealership. They stated this VIN did not fall under the recall and there was nothing they would do. Kia was called directly and also stated no assistance would be offered. No inspection or diagnosis has been made as neither the dealership nor the manufacturer is willing to assist. This vehicle should fall under the recall.

For an unknown reason when driving on the highway in heavy traffic the engine started to shake violently causing us to immediately pull over and when we opened the hood the engine was shaking violently. This was a dangerous situation because during this time the engine was not very responsive to input. No warning lights came on at all.

The contact owns a 2026 Kia Carnival. The contact stated that while driving at an undisclosed speed, while avoiding another vehicle that almost crashed into the vehicle, the contact attempted to turn the steering wheel, and the vehicle became difficult to maneuver, and the front passenger side of the vehicle crashed into a guard rail and the front bumper detached. No warning lights were illuminated. The air bags had not deployed. A Police report was filed. The contact sustained back, neck, and head pain from the impact in the crash. Medical attention was sought, and the contact was diagnosed with a whiplash. The vehicle was towed to an independent mechanic; however, the vehicle was not yet diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 29,272.