2022 KIA NIRO Complaints

Intermittent warning to "Refill Inverter Coolant" displays on the dash screen. This is a known issue pursuant to SA512 (ELE 270 Rev 3) due to faulty coolant that crystallizes and interferes with the sensor. However, per Kia, it is only covered under standard warranty (5 years/60k miles) and while my vehicle is within the year warranty, it is over the mileage. Quote was to replace "Chiller, water pump and flush coolant system" at a cost of $2369.02 including parts and labor. Dealership will not perform recommended maintenance of coolant flush (every 37k miles) without replacing these parts. If this was a known defect why is there a limitation to the SA? It should be covered as a recall, not a voluntary service alert. I am unable to properly monitor the in-dash warnings regarding coolant levels until this problem is fixed

The vehicle has a recurring P0420 code (“Catalyst System Efficiency Below Threshold Bank 1”). A boroscope inspection at Ricardo Caballero Kia Santa Isabel (invoice #[XXX] dated December 5, 2025) confirmed internal disintegration of the catalytic converter, with physical pieces of the catalyst falling out when the exhaust pipe was removed. This failure appears related to Recall 23V534 (SC276) and TSB PS709 (overheating / coolant boiling issues in 2017-2022 Niro Hybrid models). Motorambar, Inc. (official Kia distributor in Puerto Rico) has ignored my warranty claim since December 2 and December 22, 2025 (more than four months). Motorambar is now refusing to authorize a courtesy loaner vehicle at the dealer Ricardo Caballero Kia Santa Isabel, claiming the tests will take less than 5 days. This leaves me without transportation. The catalytic converter is fully covered under the Federal Emissions Warranty (8 years / 80,000 miles). I request that NHTSA investigate this as a potential safety and emissions defect and require Kia / Motorambar to: 1. Immediately repair or replace the catalytic converter under warranty at no cost. 2. Provide a courtesy loaner vehicle during the repair. 3. Reimburse previous diagnostic costs of $449.17. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2022 Kia Niro. The contact stated that the rearview camera displayed a distorted image while the vehicle was in reverse(R). The failure obstructed the driver's visibility, preventing the driver from safely operating the vehicle. Additionally, there was a delay with the image appearing on the screen when the vehicle was in reverse(R). The vehicle was taken to the dealer, but it was unknown if the vehicle was repaired. The contact stated that on a separate occasion, the vehicle failed to start up, with the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed that the battery terminals were loose. The vehicle was repaired; however, when the contact arrived to retrieve the vehicle, the vehicle failed to start. The dealer inspected the vehicle; however, no cause for the failure was found. The contact was informed by the dealer that the vehicle had an open recall, NHTSA Campaign Number: 25V426000 (BACK OVER PREVENTION). The vehicle remained at the dealer unrepaired. The manufacturer was not notified of the failure. The failure mileage was approximately 45,000.

Vehicle with code p0420, Kia dealership technician say: the problem was the spark, proceeded to change it and clear code. Check engine turn on again, the same person say: it’s a ring piston, the car was leaked engine oil to exhaust and he see blue smoke, no evidence for part of dealership and dealership never mention the car was consuming excessive engine oil. I mentioned the law of emission to change the catalyst and the boss say: I can’t change it but the problem will be come but never do anything to change it. In other dealership Kia the technician dismantle the exhaust and see ceramic part coming from the catalyst, his recommendation is change it. Dealership make a formal petition to motorambar distributor official ok Kia in PR and motorambar refuse to change the part with the evidence provide by dealership: technician report and photos. I call motorambar in 2 times and the only thing motorambar do is creating ticket to escalated to technician, never received call from this ticket, this occurred on fort week of December 2025 and today is 19 January of 2026 and not received any call from motorambar.

What component or system failed or malfunctioned, and is it available for inspection upon request? -I have received a "Check Brake Light" warning several times now, even after replacing the bulbs. I have replaced them twice now in the past 6 months and the issue persists. I believe it to be a faulty sensor or something similar. Yes, it is available to inspect upon request. How was your safety or the safety of others put at risk? I do not know if my brake light is functioning properly as this warning indicator comes on intermittently even though the light has been replaced and even when it seems there is nothing wrong with the light. It is very stressful. Has the problem been reproduced or confirmed by a dealer or independent service center? I took my car to the dealership in November 2025 and they couldn't find any issue. The indicator light did not come on at the dealership but came on again later in the week. They even replaced both brake lights hoping that would help. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The dealership service center Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No other symptoms.

I was driving on a 70mph hwy and traffic came to a full and sudden stop due to a car cutting across lanes a few cars ahead of me. There was no time for me to stop and I couldn’t see the traffic stopped. The car in front of me was able to stop without hitting anyone but I could not. Airbags did not deploy and this concerned me even though I was not injured.

Spontaneous combustion of the Sunroof. The Kia Niro is garage held in Colorado. While the temperature was in the teens the car has been driven and kept in much lower temps. No, Snow was on top of the car. When parking the car in the garage a loud noise was heard and the entire sunroof shattered

This car was purchased certified pre-owned from a Kia Dealership with 46,227 miles in October 2024. Within a month (Nov 2024), the electrical system would die overnight and we would require a jump start. This seemed to align with colder temperatures. After the first or second jump start, a headlight blew out. We replaced it. Then a tail light blew out and we replaced that one too. It seemed that there must be a connection between the electrical failure and the headlights / tail lights burning out. We took it in for a software update to see if that solved it, we also had them check the hybrid battery and the 12V battery. No other issues were detected. Eventually the problem just stopped happening. Now in Nov 2025, a year later, the problem has returned. The car's electrical system dies overnight and we have to jump start the car. And another tail light / turn signal has burned out. This time, we called a dealership to ask about any recalls or pending software updates and they said there was nothing showing in their system. We are now driving without a turn signal, which is a significant safety hazard. We will have to go back and replace the tail light / turn signal bulb. But what about the situation recurring? How do we get the car to stop 'dying' overnight in cold weather?

I was turning into a parking spot when my brakes suddenly felt loose, as if they had lost hydraulic pressure, and my vehicle accelerated into a wall. I had my vehicle serviced 3 weeks ago, and my brakes were fine. The day before the incident, I was coming to a stop, and the car was lurching forward as I was trying to stop. This isn't the first time the issue has occurred, and I had previously mentioned it to the dealership, but they found nothing upon checking. I was going to take it into the dealership, but I got into the accident.

When I got to work one day I turned off my vehicle and went about my regular day until I went to go home and my car was dead. The entire electrical system wasn’t working. No lights on the dashboard or in the vehicle when I opened the door. We went to jump it with the instructions from the owner’s manual. We finally got it jumped the next day and I drove home everything seemed okay I put gas in it and battery seemed charged from what my dashboard said. I moved my vehicle once again and it was fine but then the next day I went to turn it on and my car system was freaking out saying I needed to check my brakes and wouldn’t let me move or anything. I turned it back off to see if it was just a weird malfunction but it did the same exact thing then the car completely shut off everything dashboard everything. I called AAA. He jumped the car so he could drive it up on his truck to not do any other damage to it. I got them to tow it to my Kia dealership I bought my car from. They ran diagnostics on it and told me the wiring harness needed to be replaced and was internally shorting causing my battery to drain. They still have my vehicle in shop at the dealership. Thankfully both times I had had issues I was either at my work or my home (safe locations), but I couldn’t imagine not being able to get my car started out in an unknown area or having to jump it every time I were to drive it due to this issue. Cronin Kia dealership in Harrison, Ohio has information on the vehicle, the issue, and the fixes they were doing. If you would like to further inspect it you can as well. [xxx] was the first time it died and the [xxx] was the day it had alerted of a problem with the brakes and died then I called AAA. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)