NHTSA vehicle safety data

2018 Kia Niro Recalls & Complaints

The 2018 Kia Niro has 3 NHTSA recall campaigns and 60 owner complaints on file as of November 3, 2026. Recall repairs are usually free at an authorized Kia dealer.

NHTSA also files the 2018 Kia Niro separately as Niro Phev — 1 recall campaign.

NHTSA recall and complaint data for the 2018 Kia Niro. Recall data is refreshed daily from NHTSA.

2018 Kia Niro owner complaints

Owners have filed 60 complaints with NHTSA about the 2018 Kia Niro, describing incidents dated January 2, 2018 to September 15, 2026.

Most-cited components

  • Power Train 19 complaints
  • Electrical System 18 complaints
  • Engine 18 complaints
  • Unknown or Other 11 complaints
  • Service Brakes 6 complaints
  • Vehicle Speed Control 4 complaints

Of the 60 complaints on file, 5 report a crash; across all 60 complaints, owners report 4 injuries (owner-reported, not verified by NHTSA).

Newest complaints

  • ODI #11764588 · Filed

    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…

  • ODI #11764305 · Filed

    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…

  • ODI #11761999 · Filed

    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…

Read all 60 complaints

NHTSA defect investigations

NHTSA's investigations file lists the 2018 Kia Niro in 1 investigation. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.

Open and recently closed NHTSA defect investigations

Engine Compartment Fire

NHTSA #23V534000 · Power Train — Automatic Transmission — Internal — Clutches/Bands — Actuators/Solenoids · NHTSA notice

Reported July 31, 2023 · Kia America, Inc.

Potentially affected: 121,411 vehicles

Repair completion: 76.04% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Kia campaign SC276 · Owners notified December 29, 2023

Defect description

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.

Safety consequence

A fire increases the risk of injury.

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

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Electrical Resistance at Main Relay May Cause Fire

NHTSA #22V836000 · Hybrid Propulsion System · NHTSA notice

Reported November 11, 2022 · Kia America, Inc.

Potentially affected: 27,030 vehicles

Repair completion: 76.07% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Kia campaign SC256 · Owners notified January 9, 2023

Defect description

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.

Safety consequence

Overheated rear seats increase the risk of a fire.

Manufacturer remedy

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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.

Electrical Resistance at Main Relay May Cause Fire

NHTSA #18V666000 · Hybrid Propulsion System · NHTSA notice

Reported September 25, 2018 · Kia Motors America

Potentially affected: 27,030 vehicles

Repair completion: 87.64% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)

Kia campaign SC168 · Owners notified November 23, 2018 · Vehicles built November 1, 2016 – September 11, 2017 (per NHTSA)

Defect description

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.

Safety consequence

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

Manufacturer remedy

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.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

Other Kia Niro model years

Check your 2018 Kia Niro VIN

Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Kia Niro at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.

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