RoadVitals

2018 Kia Niro Powertrain (other) Problems

Owner-reported complaints naming the powertrain system, filed with NHTSA

Data refreshed

Powertrain (other) reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
17
Latest Jul 7, 2026
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
30%
of 56 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
0
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials. Every record below is an owner-reported complaint about the 2018 Kia Niro submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 17 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming powertrain

Shown in the owner’s own words, exactly as filed

Powertrain (other)
Filed Jul 7, 2026

The vehicle experienced a sudden powertrain failure while driving. A certified Kia dealership diagnostic scan confirmed active Diagnostic Trouble Code (DTC) P17ED (Engine Clutch System) and a physical hydraulic clutch fluid leak around the transmission housing area. These symptoms match the exact criteria of NHTSA Safety Recall 23V534 (Kia Campaign SC276) for the Hydraulic Clutch Actuator (HCA). The manufacturer's defective component leaked fluid, causing direct consequential failure of the internal clutch and transmission assembly. Kia is refusing to remedy this safety campaign failure at 100% zero cost to the consumer, violating federal safety recall mandates by attempting to charge 50% of the repair cost ($3,708.29) under the guise of 'goodwill assistance'.

NHTSA ID
11748846
Incident
Jun 27, 2026
Powertrain (other)
Filed Apr 14, 2026

I am reporting a safety issue involving my 2018 Kia Niro hybrid related to the Hydraulic Clutch Actuator (HCA), which is currently subject to a recall addressing fire risk. My vehicle has already had the recall remedy performed, which consisted of inspection and installation of a lower-amperage fuse. The dealer confirmed that the actuator is leaking fluid but did not replace it because there was no evidence of PCB contamination, which is the condition required under the recall. However, the vehicle is now experiencing significant drivability issues that create a safety hazard: Intermittent hesitation when accelerating from a stop Failure to properly engage the transmission, especially on inclines Engine revving without corresponding vehicle movement Delayed or inconsistent clutch engagement In one recent instance, the vehicle would not properly engage while attempting to move from a stopped position on an uphill incline, creating a hazardous situation where the vehicle could not reliably move when needed. This condition appears to be caused by loss of hydraulic pressure due to the leaking actuator, even though it has not yet reached the stage of PCB contamination described in the recall. The current recall remedy does not address this failure mode. Instead, it allows a known defective component to remain in service until it reaches a condition that presents a fire risk. In the meantime, the vehicle can experience loss of propulsion under normal driving conditions. I believe this represents a separate safety defect or an incomplete remedy, as loss of propulsion, especially during acceleration from a stop or on an incline, can significantly increase the risk of a crash. I am requesting that NHTSA investigate whether the current recall adequately addresses all safety risks associated with the defective Hydraulic Clutch Actuator, including drivability and loss-of-propulsion conditions that occur prior to PCB contamination.

NHTSA ID
11731040
Incident
Jan 26, 2026
Powertrain (other)
Filed Mar 31, 2026

The contact owns a 2018 Kia Niro. The contact stated that when the vehicle was shifted into reverse(R), the vehicle failed to respond. The vehicle was turned off and restarted to reset the transmission, but the vehicle failed to respond while in reverse(R). The vehicle was shifted to drive(D) but failed to respond. The vehicle was shifted into park(P). The vehicle was towed to a local dealer. The dealer diagnosed the vehicle and determined that the transmission fuse and the hydraulic clutch actuator had failed and that the transmission needed to be replaced. The contact researched online and related the failure to NHTSA Campaign Number: 23V534000 (Power Train). The manufacturer was contacted and the contact was informed that the VIN was not included in the recall. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 175,000.

NHTSA ID
11728259
Incident
Feb 7, 2026
Mileage
175,000 mi
ElectricalExterior lightingPowertrain (other)
Filed Jan 23, 2026

Ever since the purchase of the car I been bringing this attention to the dealership but they always turn down and avoiding the situation at first electrical issues like turning signals goes in and out window stop rolling up sometimes had to try for hours just rolls up fog light check light headlight and turn signal all together went out in the beginning started to work in and out and now window turn signal front both and one fog light now won't come back and front Air Flap won't operate that's from the few months into the car check light and also in the beginning car transmission always felt rough not gears smoothly change I brought this attention but they always ask change the transmission fluid but it's was a new car felt that but never bothered looking into but over time got worst now it hit you when picking up like gear just stuck and your whole body gets that shock like someone hit you from the back every time and when comes to slow stopping making crying sound. It's like I made the biggest mistake why I decided to buy the new car because I know old cars have problems but this is Brand New I bought shouldn't have problems, and from it's was new always heard the click sound when move from complete stop like go from on red light or from any stop position click hear it from front never worried but was not feeling good why but now all of sudden it's unbearable sound when turning or making u turn loud like anything when acceleration but not in straight drive asked dealership about all the problems I been getting since was a brand new car the answered I got it's now not in the warrenty will cost to check wow what a rip off and when I use to say those problems when was in the warrenty they would say it's not the major issue and yes one time one of the tech specialists I mentioned he you know what he said made me sick we would try something but warrenty is BS it's a piece of *** we never get money easily so this is why they always refuse to take this seriously wow

NHTSA ID
11712850
Incident
May 1, 2019
Powertrain (other)
Filed Oct 10, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11619130
Incident
Jul 31, 2023
Powertrain (other)
Filed Oct 7, 2024

The contact owns a 2018 Kia Niro. The contact stated that while operating the vehicle, the vehicle failed to shift out of neutral while shifting the gear shift lever. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic where it was diagnosed and the DTC code: P090B:73 error was retrieved. In addition, the contact stated that an unknown message was displayed. The local dealer was contacted and informed the contact that the failure was related to an unidentified recall; however, the VIN was not included. The manufacturer was not made aware of the failure. The failure mileage was approximately 136,663.

NHTSA ID
11618470
Incident
Sep 24, 2024
Mileage
136,663 mi
Powertrain (other)
Filed Feb 2, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11569457
Incident
Feb 2, 2024
Powertrain (other)
Filed Feb 1, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11569317
Incident
Feb 1, 2024
Powertrain (other)
Filed Jan 25, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The contact stated that the vehicle was towed to the dealer for servicing however, while the vehicle was being inspected, the HCA was performed. The vehicle was diagnosed with a failed hydraulic clutch actuator (HCA). The contact was informed that the HCA needed to be replaced. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The contact stated that the vehicle remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 48,000.

NHTSA ID
11567766
Incident
Nov 23, 2023
Mileage
48,000 mi
Powertrain (other)
Filed Jan 19, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11566565
Incident
Jan 19, 2024
Powertrain (other)
Filed Jan 9, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11564493
Incident
Jan 9, 2024
Powertrain (other)
Filed Jan 8, 2024

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ID
11564256
Incident
Jan 8, 2024
Powertrain (other)
Filed Nov 13, 2023

The contact owns a 2018 Kia NIRO. The contact received notification of NHTSA Campaign Number 23V534000 (Power Train} however, the part to do the recall repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The contact had stated that a warning light had been illuminated. The manufacturer was not made aware of the issue. The approximate failure mileage was 160,000. VIN tool confirms parts not available.

NHTSA ID
11554783
Incident
Jul 31, 2023
Powertrain (other)
Filed Oct 26, 2023

The contact owns a 2018 Kia Niro. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ID
11552062
Incident
Oct 26, 2023
Powertrain (other)
Filed Oct 6, 2023

The contact owns a 2018 Kia Niro. The contact stated that the vehicle failed to restart. The hybrid system warning was illuminated. The vehicle was towed to the dealer, where the vehicle was diagnosed, but the cause of the failure could not be determined. The vehicle was then towed to a second dealer, Elgin Kia (909 E Chicago St, Elgin, IL 60120), where the cause of the failure could not be determined. The vehicle was not repaired. The contact received notification of NHTSA Campaign Number: 23V534000 (Power Train); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified of the failure. The failure mileage was approximately 91,000. VIN tool confirms parts not available.

NHTSA ID
11548685
Incident
Jul 12, 2023
Mileage
91,000 mi
Powertrain (other)
Filed Sep 1, 2021

The power train, engine, and breaks are defective. The vehicle has malfunctioned over 10 times in the past 5 months and it happens randomly. The same issues occur each time which where the car will not drive or will be extremely jolty, the gears will not shift, the breaks are delayed, and the engine will rev (RPMs will go up and down) when put in park. This has happened in the middle of an intersection and on major roads and highways. This issue puts myself and others around me at risk. The problem has been reproduced at an authorized Kia dealership and has been attempted to be fixed on many occasions. It has been inspected and serviced by Kia service technicians. There are many warning lights and error messages that appear when the malfunction happens including: check engine light, hybrid battery light, ABS system warning, BDS system warning, emergency braking system error message, electric power steering light, master warning light, engine oil pressure light, charging system light, regenerative breaking warning light, along with engine control system and battery control system error warning messages.

NHTSA ID
11431326
Incident
Aug 29, 2021
Driver assistanceEnginePowertrain (other)
Filed Jun 24, 2019

I WAS DRIVING ON THE FREEWAY. AFTER SLOWED DOWN AND STOPPED COMPLETELY, SUDDENLY IT LOSE POWER TO RUN. TRYING TO STEP DEEPER THE GAS PEDAL, BUT NO REACTION AT ALL. AFTER TURN OFF AND TURN ON ENGINE FEW TIMES, IT CAN RUN AGAIN, BUT THIS TIME, THE REAL PROBLEM OCCUR. THE ENGINE SOUNDS SO LOUD..IT'S HYBRID CAR SUPPOSED TO SO QUIET (THAT'S WHAT SOUNDS USUALLY). LATER ON, I FOUND OUT HOW TO STILL CAN DROVE IT, BUT WITH HIGH RISK SUDDENLY LOSE POWER ON THE STREET. LATER FOUND OUT, WHEN THE CAR IN MOTION, THE HYBRID SYSTEM DIDN'T WORKED COMPLETELY, AND THE TRANSMISSION SOUND VERY ROUGH. EVERY TIME WHEN COME TO BRAKE OR WANT TO SLOW DOWN, CAN FEELS OBVIOUSLY AND HEARD THE TRANSMISSION IS VERY ROUGH MAKING CLUTCH LOUD SOUNDS. THE CRUISE CONTROL SYSTEM ALSO TOTALLY NOT FUNCTION. WHEN IN STATIONARY, VERY FIRST WHEN STARTED THE ENGINE, MADE LOUD SOUNDS ON THE ENGINE, AND CAN'T REVERSED OR MOVE FORWARD, JUST STAYED IN PLACE. THE DASHBOARD DISPLAY "CHECK HYBRID SYSTEM". AND ON THE MIDDLE SCREEN DISPLAYING, "LOW VOLTAGE DC / DC CONVERTER".

NHTSA ID
11222226
Incident
Jun 22, 2019
Mileage
10 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

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