2018 Kia Niro recalls and problems

The 2018 Kia Niro has 3 safety recalls and 61 owner complaints filed with NHTSA. Recall repairs are free at any Kia dealer.

Recalls
3
Complaints
61
Crashes / fires
5 / 0
Injuries / deaths
4 / 0

Recalls may cover only some 2018 Kia Niro vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.

2018 Kia Niro recalls

Recall 23V-534: Power Train

Reported Jul 31, 2023 · 121,411 vehicles affected · Kia America, Inc.

Problem: 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.

Risk: A fire increases the risk of injury.

Fix: 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. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC276.

Recall 22V-836: Hybrid Propulsion System

Reported Nov 11, 2022 · 27,030 vehicles affected · Kia America, Inc.

Problem: Kia Motors America (Kia) is recalling certain 2017-2018 Kia Niro hybrid electric vehicles previously recalled under recall 18V-666. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance, which can overheat the rear seats.

Risk: Overheated rear seats increase the risk of a fire.

Fix: Dealers will inspect the PRA and replace either the PRA or the Main Relay, as necessary, free of charge. Owner notification letters were mailed January 9, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC256. This recall supersedes NHTSA recall number 18V-666. Vehicles already repaired under the previous recall will need to have the new remedy completed.

Recall 18V-666: Hybrid Propulsion System

Reported Sep 25, 2018 · 27,030 vehicles affected · Kia Motors America

Problem: Kia Motors America (Kia) is recalling certain 2017-2018 Kia Niro hybrid electric vehicles. The Main Relay within the Power Relay Assembly (PRA) may have inadequate connections between its contacts, causing increased electrical resistance.

Risk: The increased electrical resistance can overheat the rear seat which is above the PRA, increasing the risk of a fire.

Fix: Kia will notify owners, and dealers will inspect the Power Relay Assembly (PRA) for damage. If no damage is found, the main relay will be replaced. If damage is found, the PRA will be replaced. These repairs will be performed free of charge. The recall began November 23, 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC168.

2018 Kia Niro problems reported by owners

Problem areaReports
Power Train19
Engine18
Electrical System18
Unknown or Other11
Service Brakes6
Vehicle Speed Control4
Structure3
Exterior Lighting2
Fuel/Propulsion System2
Engine and Engine Cooling1
Air Bags1
Seats1

Most reported parts

  • Structure › Body — 3

Typical mileage at the time of the problem: 40,295 miles (median of owner reports).

Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.

Recent 2018 Kia Niro complaints

Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.

Engine · reported Sep 15, 2026
The dealership is falsely reporting to Kia Corporate and the NHTSA that Recall SC276 is 'completed' by only replacing a fuse. They are refusing to replace the actively leaking, fire-hazardous Hydraulic Clutch Actuator unless I pay an out-of-pocket diagnostic fee. They are violating federal recall safety mandates by trying to release a vehicle with an active, un-repaired recall leak.
Unknown or Other · reported Sep 15, 2026
My 2018 Kia Niro had the Hydraulic Clutch Actuator (HCA) replacement in 2024 due to a recall. About two years later, it failed again causing the call to completely stop working creating safety issues for me. The car was towed to the dealership but Kia refused to pay for the fix. I eventually paid for the fix and requested a reimbursement since my vehicle is directly impacted by Safety Recall Campaign SC276 (NHTSA Campaign 23V534000) due to a critical design defect causing fluid leaks and electrical fire hazards. Kia never responded after initial request for escalation on August 4th, then…
Electrical System · reported Sep 3, 2026
My kia niro 2018 backup camera takes a few seconds to start up when the vehicle is put in reverse. the time it takes differs from a second to sometimes 5 seconds. I know of accident caused in a McDonalds drive through where someone was backing up but the cam didn't turn on right away and they got in a small accident.
Power Train · at 158,000 miles · reported Aug 18, 2026
The contact owns a 2018 Kia Niro. The contact stated that while driving at an undisclosed speed, the temperature gauge became elevated, and the vehicle stalled. The message "Check Hybrid System - Turn Engine Off" was displayed. The contact associated the failure with NHTSA Campaign Number: 23V534000 (Power Train). The dealer was contacted and stated that the vehicle was serviced under the recall; however, the vehicle was still inoperable, and additional diagnostic tests were needed. The vehicle was towed to an independent mechanic, and the mechanic discovered that there was no coolant inside…
Power Train · reported 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…

Other Kia Niro years

Compare all Kia Niro years · All Kia models

Frequently asked questions

Does the 2018 Kia Niro have any recalls?

Yes — NHTSA lists 3 recalls for the 2018 Kia Niro: 23V-534 (power train), 22V-836 (hybrid propulsion system), 18V-666 (hybrid propulsion system). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.

What is the most common problem with the 2018 Kia Niro?

Owners report power train problems most often (19 reports), followed by engine (18). The typical mileage when problems were reported is about 40,295 miles.

Are Kia recall repairs free?

Yes. Safety recall repairs are free at authorized Kia dealers, whether you are the first owner or bought the car used.