There are 14 owner-reported powertrain & transmission complaints for the 2018 Kia Niroin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026