2012 Hyundai Sonata fuel/propulsion system problems
99 owner complaints filed with NHTSA name the fuel/propulsion system on the 2012 Hyundai Sonata — 6% of all complaints for this model year.
What owners report
“Diagnosed 07/20/2026 with catastrophic oil ring failure requiring engine replacement. Engine can stall due to oil degradation/absence of causing uncontrolled vehicle handling and fire. This would put myself and others at risk. It has been diagnosed at dealership. Complaint Narrative: The subject…”
filed Jul 29, 2026
“Vehicle: 2012 Hyundai Sonata Incident Date: August 14, 2024 Location: [XXX] Description of the Problem: The vehicle experienced a sudden and catastrophic fire without warning while in normal use. There were no prior warning lights, messages, or symptoms before the incident. The failure appears to…”
filed Apr 3, 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% |
| 2015 Sonata | 72 | 6% |
| 2014 Sonata | 49 | 7% |
| 2013 Sonata | 133 | 7% |
Other reported problem areas on the 2012 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.