Kia Niro Complaints (2019)

101 consumer complaints on file.

#11770708October 12, 2026
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
My 2019 Kia Niro EV, with approximately 75,000 miles, continuously displays a “Refill inverter coolant” warning. While driving, the vehicle intermittently displays the turtle-shaped reduced-power warning and experiences a significant loss of acceleration. The vehicle does not respond normally to accelerator input. The condition sometimes clears after a period of driving, but when traveling uphill, the warning and reduced acceleration persist. This creates a serious safety concern because the vehicle may be unable to maintain speed or accelerate sufficiently on hills or when merging into traffic. The vehicle has been at an authorized Kia dealership for approximately seven days. The dealership has not yet identified the cause and has reportedly contacted Kia corporate technical support. The dealer has also indicated that another vehicle has presented with a similar issue. I am requesting an investigation into the potential coolant-circulation or thermal-management defect and its relationship to unexpected propulsion-power reduction.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11770398October 11, 2026
ELECTRICAL SYSTEM
I am filing this complaint regarding my 2020 Kia Niro EV because of recurring inverter coolant warnings, a coolant restriction documented by a Kia dealership, and a subsequent repair estimate exceeding $12,000 that includes the Electric Power Control Unit (EPCU). Vehicle information Year/Make/Model: 2020 Kia Niro EV VIN: [XXX] Kia Customer Care Case: XXX Kia Techline Case: XXX After purchasing this used vehicle, I experienced a recurring “Refill Inverter Coolant” warning. On XXX AutoStream Reisterstown performed an inverter coolant fluid exchange. I paid $376.41 for this service. The warning returned, and I subsequently took the vehicle to Buchanan Kia. On XXX the Kia dealership documented the following in its repair order: “Coolant is congealed and is restricting cooling system causing system to think coolant level is low.” The dealership flushed and bled the cooling system, and its documentation stated that no codes were found. However, the warning returned within days. The vehicle then remained at the dealership for further evaluation. Kia subsequently prepared a repair estimate totaling $12,030.52. The estimate includes the EPCU assembly, part number 36601-0E190, as well as the onboard charger and multiple cooling-system components. I am concerned about the cause of the coolant restriction, the recurrence of the warning after service, and whether the EPCU condition in my vehicle is related to Safety Recall SC258. I have not received a definitive written explanation establishing the cause of the failure or confirming the applicable recall coverage. My vehicle has been unavailable to me for an extended period, and despite repeated contacts with Kia Customer Care, I have not received a definitive resolution. I respectfully request that NHTSA review this complaint for a potential vehicle safety defect, including any relationship between the reported coolant condition and the EPCU assembly identified in the repair INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11764701September 16, 2026
POWER TRAIN
On August 22nd, I was driving from the grocery story to my house (5 miles away) when the transmission started failing only going on 2nd gear and the check engine light came on, when I got home, I called my mechanic and he connected his code reader to my card and the error code is P090B$07E9 Clutch "B" actuator control circuit performance error, he told me that Kia motors had an open recall for the clutch actuator, I called the Kia dealer to make an appointment for August 26th I told them the issue with my car and they told me they will check that error, it took two weeks for them to return my car and they told me that they replaced only the fuse for the Recall SC275 / NHTSA 23V534000 and they told me that I needed a new transmission and the price to replace it was $6,000.00 plus tax, I told them that the issue it was because the clutch actuator, they said no, so I took my car home, and took it for a second opinion with an independent service center, after the inspection they told me that the transmission failed and it was stuck on the 2nd gear and it was better to replace the transmission, I went back to the Kia dealer ship and demand a formal diagnostic report explicitly stating whether the Hydraulic Clutch Actuator (HCA) has leaked fluid onto the printed circuit board. But they refused to re-inspect the car, I told them if they can open a goodwill claim with Kia corporation and they said no, I called Kia corporation and explained the situation, after 30 minutes on the call with a service representative they told me that they goodwill claim was denied because I had no proof the issues was related to the Clutch Actuator, I told them I have owned the car for almost 3 years and they never send me letters of the recalls related to my car and I didn't know they have several recalls on this car that was never fixed. I am just frustrated that my car is broken and I need to pay over $6,000.00 for a new transmission.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11762422September 6, 2026
SERVICE BRAKES, ELECTRICAL SYSTEM
2019 Kia Niro. While driving normally on the street, the driver attempted to brake & the brakes would not respond. This is a very scary situation and Kia needs to handle immediately!! The message "Stop the Vehicle and Check Regenerative Brakes" was displayed. Thankfully the driver was able to come to a stop without crashing but if this was during heavy traffic time it definitely would've resulted in a crash. Could be even that much worse on the freeway, especially in Los Angeles. The vehicle was towed to the drivers home. After checking again, the vehicle was in limp mode & would not go over 15mph. The driver was able to get it to a Kia shop to be checked & they quoted a $9,000 repair!! This is horrible that Kia is allowing this issue to go on!!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11753028July 27, 2026
SERVICE BRAKES
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745988June 23, 2026
SERVICE BRAKES, FUEL/PROPULSION SYSTEM
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745044June 18, 2026
POWER TRAIN
Our 2019 Kia Niro EV (approximately 138,000 miles) exhibits an abnormal rumble/growling noise from the front drive unit while driving slowly in "D" range and when accelerating or decelerating between 0–25 mph. This symptom matches exactly the condition described in Kia Technical Service Bulletin ELE234 (Rev. 1, April 2021): "Drive Unit Inspection & Replacement for EV Motor Rumble Noise," which covers all 2019MY Niro EV vehicles produced from December 5, 2018. To our knowledge, TSB ELE234 has never been performed on this vehicle. The repair involves replacement of motor/roll mount brackets and, if necessary, traction motor or reduction gear replacement. Kia has a documented, tiered repair procedure for this exact issue with assigned labor operation codes. The failure presents a safety concern because drivetrain noise at low speed can precede loss of drive power or sudden drivetrain failure, which creates a hazard in traffic, intersections, and during highway merging. Despite the existence of this TSB since April 2021, NHTSA appears to have few or no formal complaints logged for this specific defect, meaning it has not triggered the regulatory scrutiny it warrants given the documented widespread nature of the issue. I am requesting that NHTSA investigate whether a formal recall of affected 2019 Kia Niro EV vehicles is warranted for this drivetrain defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745054June 18, 2026
POWER TRAIN
This complaint supplements a previously submitted report filed today, June 18, 2026, (Original is Complaint Number: 11845044) regarding the same vehicle and condition (TSB ELE234 drive unit rumble noise). The correct VIN for this vehicle is [XXX] — a 2019 Kia Niro EV EX Premium, 138,457 miles. I am filing on behalf of the vehicle owner, [XXX], who has authorized me to act as his advocate. The owner is a Ukrainian speaker and I am assisting with all documentation and communications. In addition to TSB ELE234 (drive unit motor rumble, April 2021), this vehicle is also subject to Kia Service Action SA512 (April 2023): Inverter Coolant/Debris Flushing for the "Refill Inverter Coolant" cluster warning, affecting 2019–2022 Niro EVs produced May 10, 2019 through October 4, 2021. SA512 has also not been confirmed as completed on this VIN. CARFAX records document multiple authorized Kia dealer visits — at Roseville Kia and Folsom Lake Kia — between 2019 and 2022, during the period both ELE234 and SA512 were active and applicable. Neither service action was applied during those visits. This filing requests that NHTSA investigate both the safety implications of the ELE234 drivetrain defect and the broader pattern of authorized Kia dealers failing to notify owners of and apply active service bulletins during routine service visits on affected VINs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11743671June 12, 2026
UNKNOWN OR OTHER
The Hydraulic Clutch Actuator has caused functional driving issues and caused my vehicle to go into limp mode. I was never informed of the recall issue prior to purchase, and the recall was marked as complete, when it was not. The fix for KIA NIRO Recall SC276 was incomplete in January 2024, and I purchased my vehicle in April 2024. My issues started in November 2025, and the incomplete recall issue has been ongoing. KIA offers only a 1/2-way fix, and this is simply not acceptable.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11739644May 22, 2026
STEERING, POWER TRAIN, WHEELS
A major drivetrain service and repair was completed by an authorized manufacturer dealership. After picking up the vehicle, an unusual front-end/steering noise was immediately reported to the staff. Over just 390 miles of driving, the symptom worsened. A subsequent formal inspection by a separate, independent authorized service center confirmed the root cause of the safety failure: the primary axle nut had been left completely unstaked during the initial drivetrain assembly, rendering the vehicle entirely unsafe to operate. The vehicle was grounded to prevent an accident. Because the mandatory safety protocol of staking the axle nut was omitted, the critical fastening hardware was allowed to back off under normal driving conditions. This component failure directly compromised the structural integrity of the front drivetrain, steering knuckle, and wheel hub assembly. Had the vehicle continued to be driven, the omission presented an imminent risk of complete mechanical separation, which could cause a wheel assembly to detach or lock up while in motion at high speeds, putting the safety of the occupants and other motorists at extreme risk. The vehicle remains grounded and is available for inspection. The safety-critical assembly failure has been fully documented by the inspecting service center via technical video (available upon request) and photographic evidence. The manufacturer has been notified of the dealer workmanship defect but has failed to authorize corrective action or safe transport of the vehicle to a certified facility for remediation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727300March 26, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2019 Kia Niro. The contact stated that while driving at an undisclosed speed, the vehicle stalled in the middle of the road. The vehicle was successfully restarted and moved over to the side of the road. The vehicle was towed to an independent mechanic, where it was diagnosed with a blown head gasket, a misfire in the engine, and coolant mixing with the engine oil; however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 118,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724340March 14, 2026
FUEL/PROPULSION SYSTEM, ENGINE, ELECTRICAL SYSTEM
While traveling from upstate New York, the vehicle displayed an engine overheating warning shortly after startup while the engine was still cold. Because I was away from home, I stayed overnight and the next morning took the vehicle to a Kia dealership for inspection. The dealership inspected the vehicle and diagnosed a problem with the exhaust heat recovery system pipe. According to the service department, coolant is leaking internally through this component and is being burned in the exhaust system. The cooling system was pressure tested and held pressure externally, indicating the coolant loss is occurring internally through the exhaust heat recovery system rather than from an external leak. This condition can cause coolant loss and overheating while driving. If the engine overheats while the vehicle is in operation, it could create a safety risk due to sudden loss of power or engine damage. The dealership confirmed the diagnosis after inspection and testing and provided a repair estimate to replace the affected exhaust heat recovery system component. The overheating warning message was the first symptom observed prior to diagnosis. The problem was confirmed by the dealership after inspection and testing. This issue may indicate a defect in the exhaust heat recovery or thermal management system used in this hybrid vehicle, as coolant is entering the exhaust stream internally rather than leaking externally. If this type of failure occurs in other vehicles, it could lead to overheating while driving and potential engine damage.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11722353March 5, 2026
POWER TRAIN, ENGINE
The contact owns a 2019 Kia Niro. The contact stated while driving at an undisclosed speed, the vehicle jerked. The check engine warning light and the hybrid battery warning light were illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that the clutch actuator was leaking, and the dual clutch and slave cylinder needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but denied assistance in covering the cost of the repair. The contact stated that the engine and dual clutch were replaced two years ago. The contact related the failure to NHTSA Campaign Number: 23V534000 (POWER TRAIN); however, the VIN was not included. The failure mileage was approximately 100,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715377February 3, 2026
ELECTRICAL SYSTEM
Hydraulic fluid is leaking onto the hydraulic clutch actuator’s circuit board, creating a potential fire hazard. The vehicle requires replacement of the dual clutch and slave cylinder. This failure occurred just over one year after Kia replaced the dual clutch and performed a full engine replacement at a Kia dealership. This condition is identical to a known safety recall affecting 2019–2022 Kia Niro vehicles involving hydraulic clutch fluid leaking onto the actuator circuit board and creating a fire risk. Although my VIN is not listed under the recall, the vehicle is the same year, make, model, and drivetrain and is exhibiting the same defect described in the recall. This appears to be a recurring safety defect involving the hydraulic clutch system.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11710793January 13, 2026
BACK OVER PREVENTION: WARNINGS, BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
My backup camera works intermittently, it has been tested at the dealership and supposed to be faulty, but if faulty why does it sometimes work, this causes danger when reversing the vehicle! The dealership wants $821 to replace the camera, I feel it should be a recall, as a whole bunch of Ford vehicles are recalled for the same issue! I have had several close calls even using my mirrors and looking over my shoulder, as the car has big blind spots!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11698695November 11, 2025
ELECTRICAL SYSTEM
Continuing and worsening motor rumbling noise and ticking/clicking at slow speeds. Spent a couple of months and without car for weeks just to have kia confirm and have gearbox changed. This has existed in some form for a couple years now.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11687183September 14, 2025
ELECTRICAL SYSTEM
1. Failed Component/System: EV plastic charging door does not open using the electronic unlock mechanism on the key. Unable to charge EV vehicle due to this fundamental failure. IMPORTANT: There are no manual override mechanisms provided by the manufacturer - KIA to open this charging door. This makes the EV both unsafe and unusable since it cannot be charged. 2. Safety Risk: Unable to charge an EV vehicle is a fundamental EV electrical system component failure that can create an unsafe situation since it occurs without any warning and leave the car owner stranded. The Manufacturer - KIA has not provided any manual fail safe/override mechanism to open the charging door manually. This is also a fundamental safety issue since the failure occurred without any warning lamp/other indication to the owner. IMPORTANT: Other KIA NIRO EV owners have complained about the same issue in online forums. Refer attachment - [XXX] 3. Dealer Problem Reproduction: NO since dealer demands a $299.99 diagnostic fee. Multiple attempts to contact the dealer and manufacturer KIA to waive the diagnostic fee were unsuccessful. 4. Manufacturer/Police/Insurance Inspection: No. KIA refused to deal with this issue under the KIA 10-year/100,000-Electric vehicle (EV) system warranty even though the warranty description mentions all internal parts. Reference: KIA Case No. [XXX]. NOTE: KIA does not allow the case history to be retrieved from their manufacturer portal because they have closed the case. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure? NO 6. When did they first appear? [XXX] (approximately) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11677830August 1, 2025
POWER TRAIN
The contact owns a 2019 Kia Niro. The contact stated that while operating the vehicle, the message "Pull Over and Shut off Engine" was displayed and a burning odor was coming from the engine compartment. After restarting the vehicle, the failure was self-corrected. The vehicle was taken to the local dealer who determined that fluid had leaked into the clutch actuator and the clutch actuator needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The contact was informed that the VIN was previously inspected as part of the NHTSA Campaign Number: 23V534000 (POWER TRAIN). The contact stated that the vehicle experienced the failure listed in the recall. The failure mileage was 35,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11673145July 13, 2025
SERVICE BRAKES
While driving an error message appeared about regenerative braking system error and the braking effectiveness was severely impaired.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11669557June 26, 2025
ENGINE, POWER TRAIN
The contact owns 2019 Kia Niro. The contact stated that on several occasions when the vehicle was started, the check engine warning intermittently illuminated. The contact stated that while driving and accelerating, the vehicle lost motive power momentarily. The vehicle was taken to an independent mechanic and DTC: P074A, P1921, P074A/73, and P1921-77 were retrieved. The vehicle was taken to a dealer where it a diagnosed and determined that the transmission gear actuator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 75,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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