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Engine coolingPart report

2019 Kia Niro Engine cooling Problems

Complaints
4about this part
Share
7%of 56 total for the year
Median mileage
102,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine cooling of the 2019 Kia Niro, 7% of the 56 complaints for this model year. Where a mileage was given, the median is 102,500 miles. 1 of these say a crash was involved, according to the filers.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The contact's customer owns a 2019 Kia Niro LX. The contact stated that his customer stated that the vehicle overheated. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic who replaced the converter. The vehicle was repaired, but the failure recurred. The owner stated that the vehicle was randomly stopping. The vehicle was taken back to the independent mechanic. …”

NHTSA complaint #11634419, filed 2025-01, 144,800 miles

“The contact owns a 2019 Kia Niro. The contact stated while driving at an undisclosed speed, the vehicle inadvertently lost motive power with the message Stop Engine . The check engine warning light was illuminated. The vehicle was towed to the dealer, who diagnosed failures with the hydraulic clutch actuator and catalytic converter. The catalytic converter was replaced, but the hydraulic clutch actuator was not repaired due to lack of part availability. …”

NHTSA complaint #11620633, filed 2024-10, 87,000 miles

“The contact owns a 2019 Kia Niro. The contact stated that while driving at an undisclosed speed, the vehicle stalled in the middle of the road. The vehicle was successfully restarted and moved over to the side of the road. The vehicle was towed to an independent mechanic, where it was diagnosed with a blown head gasket, a misfire in the engine, and coolant mixing with the engine oil; however, the vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 118,000.”

NHTSA complaint #11727300, filed 2026-03, 118,000 miles

“The contact owns a 2019 Kia Niro. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who determined that there was a misfire in cylinder #1. The vehicle was not repaired. The vehicle was then taken to the dealer, who diagnosed a failure with the cylinder #4 injector. The dealer also informed the contact that the clutch needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 32,000.”

NHTSA complaint #11631681, filed 2024-12, 32,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202025%
201947%
201812%
201745%

Other parts of the 2019 Kia Niro

Transmission and drivetrain
22 complaintsElectrical system
13 complaintsBrakes
10 complaintsEngine
10 complaintsFuel system
8 complaintsOther or unknown
6 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsSteering
2 complaintsVehicle speed control
2 complaintsExterior lighting
1 complaintsForward collision avoidance
1 complaints

← All problems reported for the 2019 Kia Niro

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology