Worst 2021 Hyundai Sonata Problems
Top 3 most-reported issues with average mileage at failure.
Engine Problems
Transmission / Drivetrain
Fuel System
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All Problems by Category
Every NHTSA complaint category for the 2021 Hyundai Sonata.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Engine Problems | 30 | 1 | — | 24,825 mi | |
| Transmission / Drivetrain | 19 | — | — | 26,220 mi | |
| Fuel System | 15 | 1 | — | — | |
| Electrical Faults | 14 | — | — | — | |
| Wipers & Visibility | 8 | — | — | 5,836 mi | |
| Gasoline Fuel System | 6 | — | — | 78,250 mi | |
| Airbags | 4 | 2 | — | — | |
| Forward Collision Avoidance: Warnings | 4 | 1 | — | — | |
| Body Structure | 4 | — | — | — | |
| Forward Collision Avoidance: Automatic Emergency Braking | 2 | 1 | — | — | |
| Lane Departure: Assist | 2 | — | — | — | |
| Seat Belt Issues | 2 | — | — | — | |
| Seat-Related Issues | 2 | — | — | — | |
| Brakes | 2 | 1 | — | — | |
| Steering Defects | 2 | — | — | — | |
| Unintended Acceleration | 2 | — | — | — | |
| Sunroof/Moonroof | 2 | — | — | — | |
| Electrical System:Ignition:Anti-Theft:Immobilizer/Proximity:Key/Sender | 1 | — | — | — | |
| Engine & Cooling | 1 | — | — | — | |
| Forward-Collision Avoidance Issues | 1 | — | — | — | |
| Forward Collision Avoidance: Adaptive Cruise Control | 1 | — | — | — | |
| Fuel Pump | 1 | — | — | — | |
| Fuel System, Gasoline:Fuel Injection System:Injectors | 1 | — | — | — | |
| Lane Departure: Blind Spot Detection | 1 | — | — | — | |
| Parking-Brake Issues | 1 | 1 | — | — | |
| Automatic Transmission | 1 | — | — | — | |
| Suspension Failures | 1 | — | — | — | |
| Visibility | 1 | — | — | — | |
| Visibility:Windshield | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2021 Hyundai Sonata. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2021 Hyundai Sonata
4 NHTSA recall campaigns affecting ~183,356 vehicles.
Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Sonata vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.
Hyundai Motor Company (Hyundai) is recalling certain 2021-2022 Santa Fe, Sonata, Veloster N, 2022 Santa Cruz, Elantra N, and Kona N vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.
Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been properly bonded to the vehicle, allowing it to detach in a crash.
Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe and Sonata vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.
Other Hyundai Sonata Years
2021 Hyundai Sonata — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2021 Hyundai Sonata reliable?
What are common problems with the 2021 Hyundai Sonata?
At what mileage do problems start on the 2021 Hyundai Sonata?
How safe is the 2021 Hyundai Sonata?
Does the 2021 Hyundai Sonata have any recalls?
Should I buy a 2021 Hyundai Sonata?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full Hyundai Sonata reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2021 Hyundai Sonata
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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