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Engine coolingPart report

2020 Kia Niro Engine cooling Problems

Complaints
2about this part
Share
5%of 39 total for the year
Median mileage
84,250miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the engine cooling of the 2020 Kia Niro, 5% of the 39 complaints for this model year. Where a mileage was given, the median is 84,250 miles.

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 owns a 2020 Kia Niro. The contact stated that the oil change due in 700 miles message was displayed. The contact stated while driving 55 MPH to have an oil change performed, oil change service at 55 MPH, the contact heard an abnormal popping sound. The contact stated that the low oil pressure warning light became illuminated. The contact stated while approaching the Auto Shop for the oil change, the vehicle lost motive power and made another abnormal sound. …”

NHTSA complaint #11665324, filed 2025-06, 70,500 miles

“The contact owns a 2020 Kia Niro. The contact stated that while driving 79 MPH, the thermostat displayed that the engine was running hot and there was white smoke coming from the front of the vehicle, with the check engine warning light illuminated. Upon inspection, the contact became aware that a hose underneath the radiator was disconnected, and coolant was leaking from the hose, and the dipstick had dislodged into the engine. The contact stated that while accelerating from a complete stop or while decelerating, the vehicle jolted forward. …”

NHTSA complaint #11760958, filed 2026-08, 98,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202025%
201947%
201812%
201745%

Other parts of the 2020 Kia Niro

Engine
9 complaintsOther or unknown
9 complaintsElectrical system
8 complaintsTransmission and drivetrain
8 complaintsBrakes
5 complaintsForward collision avoidance
5 complaintsAir bags
2 complaintsBack-over prevention (rear camera)
2 complaintsFuel system
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsHybrid propulsion system
1 complaintsSeats
1 complaints

← All problems reported for the 2020 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