2018 Kia Sportage electrical system problems
28 owner complaints filed with NHTSA name the electrical system on the 2018 Kia Sportage — 18% of all complaints for this model year.
What owners report
“The oil was leaking somewhere not on the motor not under the car not blowing black smoke. I kept adding oil to it. No oil light. I was told not to park between 2 houses or in my garage it could catch on fire. I took it in several times and they did all kinds of stuff motor wash knock sensor was…”
filed May 16, 2026
“On 1/26/2024 approximately 9am, my husband had been driving on the highway for about 2 hours and pulled over to shut his eyes for a few minutes. He shut off the engine, closed his eyes and immediately smelled smoke. Black smoke began coming from under the hood and quickly got worse. He quickly got…”
filed Mar 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
TECHNICAL 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 Sportage years
| Year | Reports | Share |
|---|---|---|
| 2026 Sportage | 5 | 20% |
| 2025 Sportage | 15 | 31% |
| 2024 Sportage | 12 | 18% |
| 2023 Sportage | 44 | 24% |
| 2022 Sportage | 8 | 18% |
| 2021 Sportage | 6 | 13% |
| 2020 Sportage | 19 | 12% |
| 2019 Sportage | 10 | 14% |
| 2017 Sportage | 62 | 16% |
| 2016 Sportage | 17 | 13% |
| 2015 Sportage | 18 | 12% |
| 2014 Sportage | 8 | 7% |
Other reported problem areas on the 2018 Kia Sportage
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.