2015 Hyundai Sonata fuel/propulsion system problems
72 owner complaints filed with NHTSA name the fuel/propulsion system on the 2015 Hyundai Sonata — 6% of all complaints for this model year.
What owners report
“I have the 2015 Hyundai sonata with the 2.5 GDI engine that eventually will seize due to internal damaged caused by manufacture design flaws. My Hyundai threw a P0010 code which causes my car to idle high and causing low vacuum affecting my brakes. I had a diagnostic test done at a Hyundai…”
filed May 1, 2026
“Component/System Failed: Engine – connecting rod bearing failure consistent with Hyundai Theta II engine defect subject to federal recalls and Consent Orders. The vehicle previously received Recall Campaign 953 (KSDS software update), intended to detect premature rod bearing wear. The engine is…”
filed Feb 17, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Fuel/propulsion System problems in other Sonata years
| Year | Reports | Share |
|---|---|---|
| 2024 Sonata | 1 | 2% |
| 2023 Sonata | 36 | 43% |
| 2022 Sonata | 22 | 24% |
| 2021 Sonata | 18 | 14% |
| 2020 Sonata | 45 | 26% |
| 2019 Sonata | 11 | 7% |
| 2018 Sonata | 30 | 8% |
| 2017 Sonata | 33 | 4% |
| 2016 Sonata | 32 | 4% |
| 2014 Sonata | 49 | 7% |
| 2013 Sonata | 133 | 7% |
| 2012 Sonata | 99 | 6% |
Other reported problem areas on the 2015 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.