2018 Kia NiroProblems, recalls & complaints

NHTSA has logged 60 owner complaints about the 2018 Kia Niro, most often about the power train. It is covered by 3 safety recalls, and for recall 22V-836 the manufacturer reports only 67% of affected cars repaired.

2018 Kia Niro

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through September 15, 2026. Updated daily. Photo: Kevauto, CC BY-SA 4.0.

Complaints by system

Where the 2018 Kia Niro has problems

60 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Power train190
Electrical system183
Engine170
Service brakes64
Vehicle speed control40
Structure30
Fuel/propulsion system20
Exterior lighting20
Seats11
2 other systems20

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

3 recalls

2018 Kia Niro recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

86%repaired · 2020 Q1

Hybrid propulsion system

Recall 18V-666 · Sep 25, 2018 · 27,030 vehicles · 23,237 repaired

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

Problem, fix and repair progress →

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Kia.

Best & worst years

2018 vs. every other Niro year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Niro median. How we score

'17'18'19'20'21'22'23'24'25'26
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
1 investigation

NHTSA defect investigations

Federal investigations that included the 2018 Kia Niro, and the recalls they led to.

  1. Pedestrian alert soundsDP22005 · closed Aug 7, 2023
    Led to recall 22V-063
In owners' words

What Niro owners report

Recent power train complaints filed with NHTSA, shortened. Personal details are removed.

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…
Complaint 11764305 · Sep 15, 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:…
Complaint 11757679 · Aug 18, 2026 · 158,000 miles
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…
Complaint 11748846 · Jul 7, 2026

Own a 2018 Niro?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.