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Engine coolingPart report

2017 Kia Optima Engine cooling Problems

Complaints
8about this part
Share
3%of 257 total for the year
Median mileage
110,569miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 8 complaints about the engine cooling of the 2017 Kia Optima, 3% of the 257 complaints for this model year. Where a mileage was given, the median is 110,569 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 2017 Kia Optima. The contact stated while driving approximately 35 MPH, the check engine warning light illuminated. The contact reset the check engine warning light however, the light became illuminated again. The vehicle was taken to a dealer and the contact was informed that the engine oil was low and needed to be topped off. Additionally, the dealer offered to perform an oil consumption test. The vehicle was not repaired. The contact stated that he had researched online and related the failure to an engine design flaw. …”

NHTSA complaint #11552931, filed 2023-10, 76,000 miles

“The contact owns a 2017 Kia Optima. The contact stated she had noticed that the vehicle required more oil between oil changes. Additionally, the contact had noticed that oil was leaking underneath the vehicle. The contact stated that the low oil pressure warning light would only illuminate upon depressing the brake pedal. The vehicle was taken to an independent mechanic, where no oil leak was found, and the contact was advised to constantly check the engine oil level. The contact stated that upon checking the oil level recently, five quarts of oil needed to be added to the vehicle. …”

NHTSA complaint #11678456, filed 2025-08, 133,000 miles

“The contact owns a 2017 Kia Optima. The contact stated that the oil warning light was frequently illuminated on the instrument panel. The contact took the vehicle to an independent mechanic and was informed that oil had leaked into an engine cylinder. The mechanic informed the contact that a Technical Service Bulletin had been placed on her vehicle in relation to the failure and referred the contact to a dealer for assistance. The contact called Pride Kia of Lynn and Herb Chambers Kia of Burlington and was informed that the vehicle was out of warranty. …”

NHTSA complaint #11549795, filed 2023-10, 122,000 miles

“The contact owns a 2018 Kia Optima. The contact stated that while driving at an undisclosed speed, black smoke was coming from the exhaust pipe and the vehicle was jerking. The oil warning light was illuminated. The contact added engine oil. The vehicle was taken to an independent mechanic, where oil was found on unknown sensors and on the coils. The contact was informed that an oil change was needed, and the filter needed to be replaced. The vehicle was repaired; however, the contact stated that after starting the vehicle, the check engine warning light illuminated. …”

NHTSA complaint #11511029, filed 2023-03, 110,569 miles

“The contact owns a 2017 Kia Optima. The contact stated while driving approximately 75 MPH, the contact attempted to accelerate to change lanes however, the vehicle failed to respond. The contact stated that the vehicle started to decelerate and sputtered as if the vehicle before the vehicle stalled. The contact stated that several unknown warning lights illuminated. The vehicle was pulled over to the side of the roadway and towed to the dealer. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the entire engine needed to be replaced. …”

NHTSA complaint #11520970, filed 2023-05, 167,000 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 2017 Kia Optima

Engine
165 complaints
Other or unknown
33 complaints
Electrical system
25 complaints
Fuel system
22 complaints
Transmission and drivetrain
21 complaints
Exterior lighting
15 complaints
Vehicle speed control
13 complaints
Steering
11 complaints
Forward collision avoidance
8 complaints
Seat belts
8 complaints
Brakes
6 complaints
Air bags
5 complaints

← All problems reported for the 2017 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