2023 Hyundai Sonata power train problems
15 owner complaints filed with NHTSA name the power train on the 2023 Hyundai Sonata — 18% of all complaints for this model year.
What owners report
“The contact owns a 2023 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the transmission shifted into neutral(N) and failed to shift into park or drive on three occasions. The vehicle was restarted. After restarting the vehicle, the vehicle was shifted into drive, and…”
filed Jun 15, 2026
“This is an extremely common issue plaguing Hyundai & Kia vehicles with the Theta III 2.5L Turbo engine, Such as Kia K5 GT, Hyundai Sante Fe, Hyundai Santa Cruz, & Hyundai Sonata N-Line. Its a failing ITM (integrated thermal management) unit or otherwise known as an ITMS unit. There is a rod within…”
filed May 14, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- Electronic controller for the Idle Stop & Go oil pump assembly may contain damaged…Campaign 23V526000 · Jul 27, 2023
Related service bulletins
This bulletin provides information related to a Transmission Control Unit (TCU) software update for some vehicles equipped with an 8-speed wet dual clutch transmission (8WDCT). The software update revises the touch…
26-AT-005H TSB · Service Bulletin/Repair Instructions · issued Jun 5, 2026
Power Train problems in other Sonata years
| Year | Reports | Share |
|---|---|---|
| 2024 Sonata | 6 | 14% |
| 2022 Sonata | 24 | 26% |
| 2021 Sonata | 22 | 18% |
| 2020 Sonata | 23 | 14% |
| 2019 Sonata | 8 | 5% |
| 2018 Sonata | 39 | 11% |
| 2017 Sonata | 55 | 7% |
| 2016 Sonata | 59 | 8% |
| 2015 Sonata | 133 | 12% |
| 2014 Sonata | 54 | 7% |
| 2013 Sonata | 94 | 5% |
| 2012 Sonata | 97 | 6% |
Other reported problem areas on the 2023 Hyundai Sonata
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.