Most common 2018 Kia Niro Phev problems
Share of the 13 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Kia Niro Phev complaints by model year
Best Niro Phev years: 2020, 2023. Years to avoid: 2022. Compare all years →
2018 Kia Niro Phev recalls (1)
Power train › Automatic transmission › Internal › Clutches/bands › Actuators/solenoids
Kia America, Inc. (Kia) is recalling certain 2017-2022 Niro and 2018-2022 Niro Plug-in Hybrid vehicles. Fluid may leak into the printed circuit board inside the hydraulic clutch actuator, which can result in an engine compartment fire.
Remedy: Dealers will inspect and replace the hydraulic clutch actuator as necessary and install a new fuse, free of charge. Owner notification letters were mailed December 29, 2023.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2018 Kia Niro Phev:
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
What 2018 Kia Niro Phev owners say
Transmission & drivetrain
I received KIA letter about the recall SC276 for HCA issue around 1/15/24. I brought my 2018 Kia Niro PHEV to Kia Dealer in San Jose. They inspected and concluded that the vehicle is safe with the recall SC276. However, they did not replace the fuse as stated in Kia's recall instructions. Ten days later, I was on the road, slowing down at the intersection and the car suddenly lost power, the Dashboard show the message for 'EV System failed'. My battery was fully charged at work, which is 2 miles away. My gas tank was full and I couldn't start my car again. Lucky enough, I was 1/4 mile away entering a Freeway. I couldn't imagine what would happen if I was on Freeway. Police stopped by, put road warning while I scrambled to get a tow truck. An hour later, they was able to move my car off the road. The first Kia Dealer is 3 miles away. …
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. VIN tool confirms parts not available.
Engine & cooling
Year/Make/Model: 2018 Kia Niro Hybrid Mileage at time of incident: approximately 69,000 Component: Hybrid Propulsion System / Powertrain My 2018 Kia Niro Hybrid has experienced five recurring "Hybrid System Failure - Turn Off Engine" errors occurring without warning while the vehicle was being operated. Each occurrence rendered the gas engine ineffective in moving the vehicle, creating an immediate safety hazard. The driver was forced to quickly navigate to safety each time. The vehicle has been brought to the dealership four times for this issue - February 25, May 4, May 15, and May 30, 2025. On May 30 the dealer performed a repair they stated would resolve the problem. The vehicle was returned the same day. On May 31, one day later, the error occurred again. The defect remains unresolved after four service visits. Out-of-pocket towing and rental car costs have been incurred each time. …
In July 2023, Kia identified a defect that can increase the risk of an engine compartment fire while driving; namely that the printed circuit board in the hydraulic clutch actuator may become contaminated with fluid and lead to an electrical short circuit. To date, there is still no remedy available. I am filing this complaint for your assistance in ensuring the company provides a remedy within a reasonable time.
Frequently asked questions
Is the 2018 Kia Niro Phev a good car?
There isn't enough complaint history for the Niro Phev to compare model years reliably. So far owners have filed 13 complaints with NHTSA.
What is the most common problem with the 2018 Kia Niro Phev?
The transmission & drivetrain — 6 complaints, 46% of all complaints for this model year. Next are the engine & cooling (4) and body & structure (2).
How many recalls does the 2018 Kia Niro Phev have?
There is 1 recall for the 2018 Kia Niro Phev, the most recent from July 31, 2023 (actuators/solenoids). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Kia Niro Phev?
The best years by complaints, compared at the same age, are 2020 and 2023. Years to avoid or approach with caution: 2022. See the full Kia Niro Phev years comparison.
At what mileage do 2018 Kia Niro Phev problems happen?
The median mileage reported in complaints is about 15,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.