2021 Kia Seltos power train problems
68 owner complaints filed with NHTSA name the power train on the 2021 Kia Seltos — 18% of all complaints for this model year.
What owners report
“My check engine light went on and the vehicle was driving sluggish, was louder at higher rpms and had a rough idle. The light went on around Aug 1st, 2026 and that's when I noticed the strange driving. Brought it to my mechanic that week and they got the following codes: p0017, p0014 and p0013. My…”
filed Sep 17, 2026
“Car began throwing a P0304 code in June of 2025. I took it to Brookshire Car Care and they ran a diagnostic, but found nothing to be wrong. In November of 2025, the car began throwing a P0304 code again and this time also had a P0303 code and P0335. The car was taken to Christian Brothers as it was…”
filed Sep 4, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC199 FL301) - This document is the owner renotification advising that Kia is conducting Voluntary Service Campaign to update the software programming on the…
SC199_OWNR_SP2_3 · Emissions · issued Feb 19, 2026
Power Train problems in other Seltos years
| Year | Reports | Share |
|---|---|---|
| 2024 Seltos | 6 | 13% |
| 2023 Seltos | 4 | 9% |
| 2022 Seltos | 10 | 14% |
Other reported problem areas on the 2021 Kia Seltos
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.