2020 Hyundai Sonata forward collision avoidance problems
11 owner complaints filed with NHTSA name the forward collision avoidance on the 2020 Hyundai Sonata — 6% of all complaints for this model year.
What owners report
“The contact owns a 2020 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle experienced phantom braking and nearly came to a complete stop. The contact stated that the automatic emergency braking system unexpectedly engaged while there were no roadway obstacles or…”
filed May 29, 2026
“My 2020 Hyundai Sonata has a recurring defect in its engine or transmission, causing sudden deceleration to ~10 mph without warning, often on major highways, with warning lights (check engine, ESC, traction control, etc.) flashing seconds before the car decelerates. This forces me to swerve off…”
filed May 4, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration…
26-AD-001H TSB · Service Bulletin/Repair Instructions · issued Feb 25, 2026
Forward Collision Avoidance problems in other Sonata years
| Year | Reports | Share |
|---|---|---|
| 2024 Sonata | 8 | 19% |
| 2023 Sonata | 8 | 10% |
| 2022 Sonata | 9 | 10% |
| 2021 Sonata | 8 | 6% |
| 2019 Sonata | 1 | 1% |
| 2018 Sonata | 7 | 2% |
| 2017 Sonata | 2 | 0% |
| 2016 Sonata | 7 | 1% |
| 2015 Sonata | 13 | 1% |
| 2014 Sonata | 5 | 1% |
| 2012 Sonata | 10 | 1% |
| 2011 Sonata | 5 | 0% |
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.