2020 Hyundai Sonata fuel/propulsion system problems
45 owner complaints filed with NHTSA name the fuel/propulsion system on the 2020 Hyundai Sonata — 26% of all complaints for this model year.
What owners report
“Car was taken to dealership for inspection. Upon inspection, it was determined that the fuel tank had expanded and pushed towards the heat shield, and expanded upward pushing up the back seats of vehicle. It was determined to not safe to drive. Manufacturer contacted me and offered a buyback. Upon…”
filed Jul 30, 2026
“Hyundai Motors America has failed to comply with its statutory obligations in conducting the recall campaign 25V796, and is instead engaging in behavior substantially similar to that which has been previously censured by NHTSA. My Sonata suffered irreparable damage related to this campaign as…”
filed Jun 10, 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% |
| 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% |
| 2012 Sonata | 99 | 6% |
Other reported problem areas on the 2020 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.