2020 Kia Optima electrical system problems
13 owner complaints filed with NHTSA name the electrical system on the 2020 Kia Optima — 9% of all complaints for this model year.
What owners report
“I own a 2020 Kia Optima and have been experiencing multiple ongoing problems with the vehicle. The vehicle is leaking and/or losing engine oil at an excessive rate. I have had to add oil multiple times within a short period of time because the oil level continues to drop. I am concerned that the…”
filed Aug 27, 2026
“I bought my car brand new in July of 2020. In Spetember of 2023 roughly around 60,000 miles the engine started consuming large amounts of oil. The dealership put me through the so-called warranty process 3x over a years' time. They refused to file warranty paperwork within the year I was going…”
filed May 16, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER NOTIFICATION (SC340 FLIGHT 104 ) - This document is the owner notification advising that Kia is conducting a Voluntary Emissions Service Campaign to improve the emissions…
SC340_OWNR_JF&JFA_104 · Emissions · issued Mar 17, 2026TECHNICAL SERVICE BULLETIN: VOLUNTARY EMISSIONS SERVICE CAMPAIGN: THETA II 2.4L GDI EMISSION SECM LOGIC IMPROVEMENT (SC340 REV 4) - This bulletin has been revised to include additional information. New/revised sections…
SC340_TSB_R4 · Emissions · issued Mar 6, 2026
Electrical System problems in other Optima years
| Year | Reports | Share |
|---|---|---|
| 2019 Optima | 23 | 11% |
| 2018 Optima | 33 | 14% |
| 2017 Optima | 25 | 10% |
| 2016 Optima | 102 | 14% |
| 2015 Optima | 135 | 13% |
| 2014 Optima | 60 | 10% |
| 2013 Optima | 146 | 11% |
| 2012 Optima | 122 | 13% |
| 2011 Optima | 63 | 11% |
| 2010 Optima | 13 | 17% |
| 2009 Optima | 16 | 14% |
| 2008 Optima | 15 | 10% |
Other reported problem areas on the 2020 Kia Optima
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.