2021 Hyundai Sonata Lane departure Problems
- Complaints
- 3about this part
- Share
- 2%of 135 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the lane departure of the 2021 Hyundai Sonata, 2% of the 135 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Will be driving the car and suddenly hear a beep. Then the dashboard will flash with the ABS light engine light tire pressure light check Blindspot sensors, forward collision sensors. once all the lights appear on the dashboard, I can no longer accelerate. i’ve cleaned the throttlebody. I’ve replaced the gas pedal and it’s still kicking back the same code it still does it the same identical thing. It’s given out on me three times since December with an infant in the car. We are now in February.”
NHTSA complaint #11714874, filed 2026-02“Engine makes rattling and knocking noises. Transmission hesitates and jerks Suspension front struts and rear shocks are bad. Possible the isolators. Having horrible back pain when riding in car. Starter intermittently doesn't work Lane keep assistance goes over small bump in road will make car drive in opposite lane into on coming traffic. Took car to Tameron hyundai in Birmingham on the 29th of December 2025. Told them everything thats going on with the car. They did nothing about any of the issues. Car has 55,000 miles on it as that is when all problems have incurred. …”
NHTSA complaint #11709919, filed 2026-01Related service bulletins
- 11029906Feb 25, 2026Some 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…
Lane departure: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2024 | 2 | 4% |
| 2023 | 2 | 2% |
| 2022 | 3 | 3% |
| 2021 | 3 | 2% |
| 2020 | 3 | 2% |
| 2019 | 5 | 3% |
| 2018 | 3 | 1% |
| 2017 | 1 | 0% |
| 2016 | 3 | 0% |
| 2015 | 4 | 0% |
| 2013 | 1 | 0% |
| 2006 | 1 | 0% |
| 2002 | 1 | 0% |
Other parts of the 2021 Hyundai Sonata
34 complaintsFuel system
34 complaintsOther or unknown
32 complaintsTransmission and drivetrain
25 complaintsElectrical system
18 complaintsVisibility (wipers, defrost, mirrors)
12 complaintsForward collision avoidance
9 complaintsAir bags
4 complaintsBrakes
4 complaintsBody and structure
4 complaintsSeat belts
2 complaintsSeats
2 complaints
← All problems reported for the 2021 Hyundai Sonata
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology