32 of the
503 complaints filed about the KIA Niro
are about the braking system —
6% of everything owners reported.
The worst model year for it is 2019.
2017 Kia Niro Hybrid subject to Safety Recall SC276 (NHTSA Campaign 23V534) for the Hydraulic Clutch Actuator (HCA). Fluid contamination of the HCA PCB can cause an electrical short and engine compartment fire risk. Official remedy is HCA inspection/replacement as necessary plus a new fuse. Three dealer visits: Shortly after purchase for SC276 recall and routine service. Dealer performed HCA Inspect/Replace, reported no problem codes, and replaced the fuse. After sudden complete loss of propulsion on the freeway at 60-65 mph with a passenger. Engine RPM rose sharply as if in neutral. No accelerator response. Brake system warning lights illuminated. Had to pull over to the shoulder, shut off and restart before it would move. Took to dealer same day. They kept it several days, found no codes, could not duplicate, and released as "good to go." Vehicle later would not move and entered limp mode. Towed to dealer. That morning I replaced spark plugs myself with new NGK Laser Iridium Premium and informed the dealer. HCA fluid reservoir was empty. Dealer diagnosed internal leak in the HCA causing clutch contamination. Photos showed green fluid on undercarriage. Repair estimate exceeds $6900. Same Multi-Point Inspection that diagnosed the internal leak marked fluid leaks and fluids as Passed. Report still recommended spark plug replacement despite being told they were just replaced. Sudden loss of propulsion on public freeway with a passenger present, followed by complete loss of driveability due to internal leak of the same recalled HCA component, created a clear safety risk. Vehicle became undriveable and required towing. Prior "good to go" release left the vehicle on the road with an unresolved issue involving the recalled component.
NHTSA complaint #11754127 — an unverified report by a vehicle owner.
The contact owns a 2022 Kia Niro. The contact stated that while his wife was driving at various speeds, the vehicle made an abnormally loud grinding sound. The vehicle was taken to an independent mechanic, and the brake pads and rotors were replaced. While replacing the brake pads and rotors, the mechanic became aware that the parking brake cable housing was at an improper angle on the rear wheels, causing friction to damage the parking brake housing and exterior rubber. The mechanic determined that the parking brake cable assembly needed to be replaced. The vehicle had not received any additional repairs. The manufacturer was not notified of the failure. The failure mileage was approximately 90,000.
NHTSA complaint #11753454 — an unverified report by a vehicle owner.
The contact owns a 2019 Kia Niro. The contact stated that while driving 65 MPH, the brake pedal was depressed; however, the vehicle failed to stop as needed. The contact pulled over to the shoulder of the roadway and the parking brake was engaged to keep the vehicle from moving. The message "Stop the Vehicle and Check Regenerative Brakes" was displayed. The failure was a recurring failure. The vehicle was towed, and the dealer was contacted; however, the vehicle was not diagnosed or repaired because the dealer was unable to duplicate the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 93,000.
NHTSA complaint #11753028 — an unverified report by a vehicle owner.
This submission is supplemental information for my prior NHTSA complaint (Complaint #XXX). After filing the original report, I learned additional details from the Kia dealership that serviced my vehicle. The service department stated that they have seen the same electronic parking brake controller and actuator failure on multiple Kia Niro vehicles from model years 2018–2021. They reported that these failures were not covered under warranty for those years, even when the symptoms began during the warranty period. The dealer also explained that Kia made design improvements to the electronic parking brake system in later model years and expanded warranty coverage for the updated EPB assembly and control components. This suggests that Kia was aware of recurring issues with the earlier design, despite no formal recall or service campaign being issued for the affected 2018–2021 vehicles. I am submitting this supplemental information because it indicates a potential pattern of safety‑related failures involving the electronic parking brake system across multiple vehicles and model years. These failures affect the vehicle’s ability to hold position when parked and may interact with braking and stability control systems.”
NHTSA complaint #11749340 — an unverified report by a vehicle owner.
My car is a 2019 KIA Niro Hybrid. It's only 7 years old, and my husband and I have been the only owners. It only has 61,000 miles on it, and it is serviced regularly and has to pass a state emissions test each year. As I was driving the other day, the dashboard lit up with critical alerts saying "check regenerative battery" and the braking system went completely soft; I could not stop the car using the brakes. It was terrifying. I had to pull off the road and use the emergency brake to stop the car. This was an awful incident that could have resulted in deaths or serious injuries. Again this is for a car that is well-maintained and well under 100,000 miles.
NHTSA complaint #11745988 — an unverified report by a vehicle owner.
The electronic parking brake controller failed after intermittent warnings that began while the vehicle was still under warranty. The parking brake actuator also failed and had to be replaced. The electronic parking brake system is part of the vehicle’s safety system, and the failure caused the parking brake to malfunction unpredictably. The issue did not store persistent diagnostic codes, making it difficult to diagnose earlier. This is a safety concern because it affects the vehicle’s ability to hold position when parked and can interfere with braking and stability control. Because I am not the original owner, Kia refused to perform this as a warranty repair even though the intermittent failures began while the vehicle was under warranty.
NHTSA complaint #11744598 — an unverified report by a vehicle owner.
The vehicle experienced a dangerous driving failure due to a hydraulic clutch actuator system issue and was towed to Kia Delray. The authorized dealership has officially diagnosed the issue as a "brake/clutch fluid leak" (attached diagnostic estimate), which is exactly the hazardous condition outlined under Safety Recall 23V534 (SC276). However, the dealer refuses to perform the free recall repair remedy, claiming that the recall campaign was technically marked as completed after a previous interim fuse replacement. They are demanding $5,642.21 out-of-pocket and threatening to charge $75/day storage fees starting Monday morning. I am seeking immediate federal regulatory intervention as this vehicle has a well-documented fire and safety hazard that the manufacturer refuses to cure.
NHTSA complaint #11741038 — an unverified report by a vehicle owner.
When I’m braking at slow speeds, 10mph or less the front left tire braking system locks and makes the car skid. This happens randomly. There’s also a clicking sound made from the regen braking to switching to regular braking. The mechanic replaced the hca assembly and wiring kit from a recall but the car is still having the same issues. This also brings up the codes EBS and AUTO HOLD on my dash.
NHTSA complaint #11719210 — an unverified report by a vehicle owner.
I bought my Niro hybrid EX Touring new from the dealership in 2023. The first issue arose when the car shut off completely while driving and was towed to the dealership. Later, I started hearing a squeaking/rubber rubbing sound. The car would make squeaking and creaking noises when turning or going over minor bumps. The "rubber rubbing sound" happened when I was at a full stop, right after removing my foot from the brake, as the car began to move forward. These issues were both reported to the dealership, and they did an inspection. The dealership service center has been able to hear the sounds. Since then, the calliper boots have been replaced multiple times and the full calliper kit once. The strut bearing has also been replaced multiple times. Consistent issues with the car's braking system is a significant safety issue. I have no idea what damage the rest of my car could have sustained, and I have not been able to get an answer for why this is happening. I have also been in contact with the manufacturer.
NHTSA complaint #11716423 — an unverified report by a vehicle owner.
When attempting to activate the parking brake there is no response from the vehicle. No matter how many times in attempting to activate the parking brake it would not activate. The only way to successfully activate the parking brake was if "auto hold" was on and i turned off the vehicle. i have a safety concern regarding this matter as the vehicle could potentially roll away if the car is unattended. The problem has not been reproduced or confirmed by the service center as of yet but it will be inspected on 01/14/2026. There are no warning lamps, messages or other symptoms of the problem prior to the failure.
NHTSA complaint #11710359 — an unverified report by a vehicle owner.
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.
NHTSA complaint #11703967 — an unverified report by a vehicle owner.
The incident, occurring on [XXX], was first submitted by phone, followed by email to [XXX] on 27 May with incident description and sketch. I was given the Complaint ID no ODI11663050. However, now when I search for that number, nothing shows up! I have not received any information that the complaint has been investigated and dismissed! In order to publicize this event as much as possible to warn the public about this dangerous safety issue, I have posted the following on my X account ( [XXX] ) and have asked family and friends to spread the information as much as possible. Appreciate you contacting me at [XXX] and/or [XXX] about this. Post 1: 🚨Hybrid Car Warning! 🚨 If you drive a hybrid and get a Hybrid Motor Failure warning, STOP IMMEDIATELY and seek help! My 2022 Kia Niro Hybrid flashed this warning—I drove straight to an auto shop nearby. What happened next was terrifying… (🧵 1/3) Post 2: As I tried braking to park, the brakes failed, and the car accelerated instead! I barely avoided the shop, parked cars & trees—but I jumped a curb, went in & out of a ditch, and stopped across a major road. A red light saved me from being hit! 😨 (🧵 2/3) Post 3: The airbag deployed, hitting my chest hard. My chest is in pain. I had a major lumbar surgery in 2021 and my back is a mess ChatGPT indicates several possible causes, but the most relevant is a hybrid motor failure may cause unintended acceleration & brake issues. Post 4: Drivers, take these warnings seriously! 🚗⚠️ Stay safe! 🙏 #HybridCar #Safety INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11665549 — an unverified report by a vehicle owner.
The contact owns a 2022 Kia Niro. The contact stated that the Hybrid Engine alarm activated and illuminated. The contact parked the vehicle for a few hours, and when restarting the vehicle, the alarm was no longer displayed. The contact continued to drive at approximately 5 mph. When pressing the brake pedal to park, the brake pedal floored with no resistance, and the vehicle began to accelerate. The contact immediately turned the vehicle towards the left to avoid crashing into a nearby building, jumped a curb into a ditch, causing the vehicle to bounce several times, and landed on the main street where it came to a stop. The air bags were deployed when the vehicle jumped the curb, landing in the ditch. The contact received bruises and cuts to their right leg and femur, chest, and back injuries. Medical attention was needed. The vehicle was damaged on the front end and was towed. It was not determined if the vehicle was totaled as of yet. A police report was filed. The dealer was not informed of the failure. The manufacturer was not made aware of the failure. The failure mileage was unknown.
NHTSA complaint #11663050 — an unverified report by a vehicle owner.
I'm 59 years old never have an accident or had to slam breaks on the guy in front of me slammed his breaks on so I did the same time the brake pedal was to the floor the car didn't even slowed down and not even skid marks hit him then air bags deployed the car was totaled no one got hurt thank God I do t know if any other kia cars had this problem I got real lucky
NHTSA complaint #11657629 — an unverified report by a vehicle owner.
An alert to "check regenerative brakes" popped up on the dashboard screen. My younger sister who is borrowing our car, told me it now takes her much longer to come to a stop when braking. She's having to brake really early to stop on time but traffic and animals will not always allow for that. From what I am reading online, this is a common issue due to faulty 12v battery or a loose ground from said battery. The only way to fully engaged the conventional brakes (without the regenerative brakes) is to switch the car into neutral and then brake. This is a major safety issue that Kia should address. Maybe they need to address the battery issue, but they definitely should address the fact that you have to shift into neutral to brake properly when the regenerative brakes arent working right. Seems like a common sense plan to have it default to conventional brakes when the others are having issues or at least provide a way to turn off regenerative brakes.
NHTSA complaint #11656054 — an unverified report by a vehicle owner.
On Oct 4, 2024, a driver rolled into my car on an incline. While waiting for the police, I looked inside my car and thought the engine was still on. (Flashers). I turned the power button and the car began to roll backwards. I jumped in and tried the break. Pedal went all the way to the floor and car rolled faster. Moved gear shift around and kept rolling faster and faster (incline). I had my left foot out of the car and right on the break. At one point, I was thrown out of the car and my left leg was run over. Car stopped when it hit a tree. Three weeks in hospital and rehab. Still haven’t been able to return to work.
NHTSA complaint #11637344 — an unverified report by a vehicle owner.
The contact's customer owns a 2019 Kia Niro LX. The contact stated that his customer stated that the vehicle overheated. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic who replaced the converter. The vehicle was repaired, but the failure recurred. The owner stated that the vehicle was randomly stopping. The vehicle was taken back to the independent mechanic. While test driving at 15 MPH, the brakes were operating as designed, and then after several attempts, the brake pedal was applied and depressed to the floorboard, and the driver crashed into a parked BMW X5. There were no warning lights illuminated. The brakes were inoperable. The air bags deployed. There were no reported injuries, fire or police report filed. The local dealer was contacted, but the vehicle was not diagnosed or repaired. The manufacturer was not notified of the faikure. The failure mileage was approximately 144,800.
NHTSA complaint #11634419 — an unverified report by a vehicle owner.
I got my oil changed and since I picked it up, I have an EPB light on and my “auto-hold” is orange, I also can’t set my cruise control. This disables safety features on my car- adaptive cruise control.
NHTSA complaint #11625827 — an unverified report by a vehicle owner.
My right brake light keeps going out and it was “fix” before my the Kia dealership and they said it was just a lose harness but months later it has happened again, the warning light constantly comes on and the power to the light is intermittent. It is currently back into the shop to run another diagnostic
NHTSA complaint #11590360 — an unverified report by a vehicle owner.