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Engine coolingPart report

2020 Kia Optima Engine cooling Problems

Complaints
8about this part
Share
5%of 151 total for the year
Median mileage
116,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the engine cooling of the 2020 Kia Optima, 5% of the 151 complaints for this model year. Where a mileage was given, the median is 116,000 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.

“I believe the engine could possibly be failing. My engine light will come on & flash, when it does this it is slowing down at speed ranges of 60 mph. Another thing, the GDi engine that is in this vehicle burns oil EXTREMELY fast. It is quite aggravating having to constantly get oil changes every 2-4 weeks & have only driven 0-1500 miles. This is not normal. The engine has this crackling noise as if it’s chopping metal.”

NHTSA complaint #11507131, filed 2023-02

“The contact owns a 2020 Kia Optima. The contact stated that the vehicle was consuming an excessive amount of engine oil. The contact stated that oil changes needed to be performed more frequently than normal. The contact stated that the oil light remained illuminated. The local dealer was not contacted. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 116,000.”

NHTSA complaint #11629853, filed 2024-12, 116,000 miles

“The contact owns a 2020 Kia Optima. The contact stated that while the vehicle was at a full stop, the red oil warning light illuminated; however, after driving off, the warning light disappeared. The vehicle was driven to an independent mechanic where it was diagnosed with an oil pump failure caused by low oil pressure while the vehicle was stationary, and the RPM was low. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 167,000.”

NHTSA complaint #11720784, filed 2026-02, 167,000 miles

“The contact owns a 2020 Kia Optima. The contact stated while driving approximately 45 MPH, and depressing the accelerator pedal, the check engine light was flashing. The contact stated that the accelerator pedal was being depressed; however, the vehicle failed to respond as needed. The contact pulled over, turned off the vehicle, and had the vehicle towed to an independent mechanic to be diagnosed. The mechanic retrieved DTC code: P1326; and notified the contact that the vehicle had experienced engine failure. …”

NHTSA complaint #11618726, filed 2024-10, 117,000 miles

“The contact owns a 2020 Kia Optima. The contact stated that the vehicle was sputtering and vibrating abnormally while starting. There were no warning lights illuminated. The failure was intermittent but became a recurring failure. The vehicle was towed to an independent mechanic out of fear of the vehicle stalling on the highway. Prior to the engine failure, the contact became aware that there were oil spots where the vehicle was parked. The vehicle was diagnosed, and the mechanic sealed two holes in the oil pan and replaced the spark plugs that were fouled by engine oil. …”

NHTSA complaint #11714482, filed 2026-01, 91,185 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
202085%
201931%
2018146%
201783%
2016243%
2015313%
2014163%
2013423%
2012202%
201181%
201023%
200922%
200853%
200742%
200696%
200564%
2004115%
200375%
200277%
20012417%

Other parts of the 2020 Kia Optima

Engine
102 complaints
Transmission and drivetrain
27 complaints
Other or unknown
18 complaints
Electrical system
14 complaints
Fuel system
13 complaints
Brakes
8 complaints
Air bags
7 complaints
Vehicle speed control
6 complaints
Forward collision avoidance
5 complaints
Seat belts
4 complaints
Exterior lighting
2 complaints
Steering
2 complaints

← All problems reported for the 2020 Kia Optima

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