2021 Hyundai Sonata Recalls, Problems & MPG
NHTSA lists 4 safety recalls and 189 owner complaints for the 2021 Hyundai Sonata. The EPA rates it 27 to 52 MPG combined, depending on engine and drivetrain.
- Recalls
- 4
- Owner complaints
- 189
- Crashes / fires reported
- 8 / 0
- EPA combined
- 27–52 MPG
2021 Hyundai Sonata recalls
Fuel System, GasolineNov 18, 2025 · NHTSA 25V796000+
Risk: A melted fuel tank can leak, increasing the risk of a fire.
Fix: Dealers will inspect and replace the check valve. The fuel tank assembly will be inspected for damage and replaced if necessary. Additionally, dealers will inspect and update the engine control unit software. All repairs will be performed as necessary, free of charge. Owner notification letters were mailed beginning March 13, 2026. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 286. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on November 19, 2025.
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.
Power TrainOct 6, 2022 · NHTSA 22V746000+
Risk: Loss of drive power increases the risk of a crash.
Fix: Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed January 10, 2023. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 236.
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.
VisibilityDec 28, 2021 · NHTSA 21V00M000+
Risk: A windshield that detaches from a vehicle during a crash can increase the risk of injury.
Fix: Dealers will remove and reinstall the front windshield panel, free of charge. Owner notification letters were mailed June 20, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 216.
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.
Fuel System, GasolineJul 9, 2021 · NHTSA 21V524000+
Risk: A fuel leak increases the risk of a fire.
Fix: Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed on September 3, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 207.
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.
Recall repairs are free. Enter your VIN at nhtsa.gov/recalls to see if yours still needs one.
Most reported 2021 Hyundai Sonata problems
Owner complaints to NHTSA by system. One complaint can name more than one system.
- Engine55
- Electrical System42
- Unknown or Other39
- Power Train29
- Fuel/Propulsion System26
- Fuel System13
- Gasoline13
- Forward Collision Avoidance12
2021 Hyundai Sonata gas mileage
EPA ratings for each version (city / highway / combined).
| Version | Engine | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|
| Sonata Hybrid Blue | 2.0 L 4 cyl, Automatic (AM-S6) | 50 | 54 | 52 | $1,250 |
| Sonata Hybrid | 2.0 L 4 cyl, Automatic (AM-S6) | 45 | 51 | 47 | $1,350 |
| Sonata | 2.5 L 4 cyl, Automatic (S8) | 28 | 38 | 32 | $2,000 |
| Sonata | 2.5 L 4 cyl, Automatic (S8) | 27 | 37 | 31 | $2,050 |
| Sonata | 1.6 L 4 cyl, Automatic (S8) | 27 | 37 | 30 | $2,150 |
| Sonata | 2.5 L 4 cyl, Automatic (AM-S8) | 23 | 33 | 27 | $2,400 |
Real-world mileage depends on how and where you drive. Logbay compares your actual MPG with these EPA numbers.
Questions
Does the 2021 Hyundai Sonata have any recalls?
Yes. NHTSA lists 4 recalls for the 2021 Hyundai Sonata, most recently for the fuel system, gasoline (Nov 18, 2025). Recall repairs are free at a dealer; check your VIN at nhtsa.gov/recalls.
What are the most common 2021 Hyundai Sonata problems?
Owners filed 189 complaints with NHTSA. The most reported areas are engine (55), electrical system (42), unknown or other (39).
What gas mileage does the 2021 Hyundai Sonata get?
The EPA rates the 2021 Hyundai Sonata at 27 to 52 MPG combined (best version: 50 city / 54 highway).
Sources: NHTSA recalls and owner complaints (api.nhtsa.gov), EPA fuel economy (fueleconomy.gov). Updated Oct 26, 2026. Complaint counts are unverified owner reports.