2019 Kia Optima Fuel system Problems
- Complaints
- 18about this part
- Share
- 8%of 212 total for the year
- Median mileage
- 95,658miles
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
NHTSA recorded 18 complaints about the fuel system of the 2019 Kia Optima, 8% of the 212 complaints for this model year. Where a mileage was given, the median is 95,658 miles. 1 a fire, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Our 2019 Kia Optima has now stalled twice at a stop light in the past year. When it happens, we're able to restart the engine. In addition to stalling, the car struggles to start on some days and runs lumpy (minor surges in power) on other days. The symptoms match a problem Kia is aware of and for which it has provided an extended warranty (15 years/150,000 miles). …”
NHTSA complaint #11578034, filed 2024-03“I currently have 119500 miles on my 2019 Kia Optima. I am losing oil somewhere between oil changes, and the car is beginning to hesitate while driving. I don't see oil on the ground but I have had to put in 2-3 1/2 quarts of oil way too often. For this to happen on some many vehicles, it must be a manufacturer defect. The hesitation just started and I'm taking it do get a diagnostic test. 11”
NHTSA complaint #11589707, filed 2024-05“Subject: Complaint Regarding Excessive Oil Consumption and Engine Hesitation in 2019 Kia Optima SX To Whom It May Concern, I am writing to formally lodge a complaint regarding my 2019 Kia Optima SX. Despite meticulous maintenance and care, I have been experiencing significant issues with the vehicle that are concerning, especially considering its relatively low mileage of only 107,000 miles. …”
NHTSA complaint #11592144, filed 2024-06“Oil is getting into cylinders causing spark plugs to misfire. Very high oil consumption so I have to put oil in it every other day in between oil changes. I’ve been to Kia Service department several times in the past 2 months.”
NHTSA complaint #11651683, filed 2025-03“I was just driving then noticed lack of acceleration and the engine light flashing. Loosing acceleration mid driving posed a great safety risk because no other drivers would know the issue I was experiencing and risked causing an accident. The vehicle was taken for a fault code reading which indicated a knock sensor code, later it was inspected at the dealership who confirmed an ECU issue. The police or insurance have not inspected the vehicle for this particular issue.”
NHTSA complaint #11683345, filed 2025-08Related service bulletins
- 10225574Oct 31, 2022TECHNICAL SERVICE BULLETIN: FUEL PUMP FILTER INSPECTION/REPLACEMENT - This bulletin has been revised to include additional information. New/revised sections of this bulletin are…
- 10225572Oct 28, 2022TECHNICAL SERVICE BULLETIN: FUEL PUMP FILTER INSPECTION/REPLACEMENT - This bulletin provides information associated with the 'Warranty Extension Program' (WTY028) to inspect and…
- 10216905Jul 29, 2022WARRANTY EXTENSION: OWNER NOTIFICATION - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage for repairs related to…
- 10216907Jul 27, 2022WARRANTY EXTENSION: REIMBURSEMENT FORM - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid…
- 10216906Jul 27, 2022WARRANTY EXTENSION: QUESTION AND ANSWER - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Warranty Extension (WTY028).
- 10216904Jul 27, 2022WARRANTY EXTENSION: DEALER PARTS AND SERVICE MANAGER MEMO - This document is the announcement to the dealer Parts and Service Managers that Kia is extending the New Vehicle…
- 10216903Jul 27, 2022WARRANTY EXTENSION: DEALER PRINCIPAL MEMO - This document is the announcement to the dealer principals that Kia is extending the New Vehicle Limited Warranty coverage for repairs…
- 10176922Jun 3, 2020TECHNICAL SERVICE BULLETIN: COMBINATION TSB/SERVICE ACTION: AIR FILTER AND NVLD REPLACEMENT (SA421) - This bulletin provides the procedure to perform an evaporative leak test and…
- 10152915Jan 18, 2019TSB: SPECIAL SERVICE INFORMATION & SPECIFICATIONS FOR GDI HIGH PRESSURE FUEL SYSTEM - This bulletin has been revised to include additional information. This bulletin provides…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 13 | 9% |
| 2019 | 18 | 8% |
| 2018 | 13 | 6% |
| 2017 | 22 | 9% |
| 2016 | 62 | 8% |
| 2015 | 56 | 6% |
| 2014 | 48 | 8% |
| 2013 | 123 | 9% |
| 2012 | 54 | 6% |
| 2011 | 26 | 4% |
| 2010 | 1 | 1% |
| 2009 | 1 | 1% |
| 2008 | 5 | 3% |
| 2007 | 3 | 2% |
| 2006 | 9 | 6% |
| 2005 | 10 | 7% |
| 2004 | 10 | 4% |
| 2003 | 12 | 9% |
| 2002 | 6 | 6% |
| 2001 | 3 | 2% |
Other parts of the 2019 Kia Optima
92 complaintsOther or unknown
43 complaintsForward collision avoidance
36 complaintsElectrical system
23 complaintsBrakes
19 complaintsTransmission and drivetrain
17 complaintsBody and structure
14 complaintsAir bags
12 complaintsVehicle speed control
10 complaintsLane departure
7 complaintsSteering
6 complaintsElectronic stability control
3 complaints
← All problems reported for the 2019 Kia Optima
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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