Is the 2020 Hyundai Sonata a bad year?
183 owner complaints to NHTSA. Engine and transmission complaints are in line with other Sonata years.
Keep it
Engine and transmission complaints for the 2020 Hyundai Sonata are in line with other Sonata years. Fuel system stands out for this year: see below.
The verdict moves with mileage: the same car reads differently at 30,000 and at 150,000 miles.
What 2020 Sonata owners report, by mileage
Each system owners named in five or more complaints, with the mileage range where the middle half of those complaints were filed. Read at 78,000 miles.
| SYSTEM | COMPLAINTS | MIDDLE HALF FILED AT | TYPICAL US REPAIR BILLS |
|---|---|---|---|
| Fuel systemSTANDS OUT | 59 (32%) | 47k–96k miles · around this mileage | Fuel pump replacement $220–$1,500 · Fuel injector replacement (one injector) $300–$1,200 |
| Engine | 32 (17%) | 13k–112k miles · around this mileage | Valve cover gasket replacement $110–$500 · Timing chain replacement $1,000–$4,000 |
| Electrical systemSTANDS OUT | 41 (22%) | too few with a mileage | 12-volt battery replacement $100–$400 · Starter motor replacement $350–$1,200 |
| Transmission and drivetrain | 24 (13%) | too few with a mileage | — |
| Body structure | 17 (9%) | too few with a mileage | — |
| Seats | 16 (9%) | too few with a mileage | — |
| Collision avoidance | 13 (7%) | too few with a mileage | — |
| Air bags | 7 (4%) | too few with a mileage | — |
| Speed control | 7 (4%) | too few with a mileage | — |
| Steering | 7 (4%) | too few with a mileage | — |
| Visibility and wipers | 7 (4%) | too few with a mileage | — |
| Backup camera | 6 (3%) | too few with a mileage | — |
Bills are typical US ranges from the sources named in the tool (J.D. Power, Kelley Blue Book, CarParts.com and others), printed only for systems that stand out or sit at or ahead of 78,000 miles. Not a quote.
What owners reported alongside their complaints
Of 183 complaints: 5 mention a crash · 1 mentions a fire · 4 report an injury · 8 say the car was towed.
46 complaints were filed in the last 12 months, the newest in Nov 2026.
Counts of what owners wrote in their complaints, not verified by anyone.
Recalls for the 2020 Hyundai Sonata: 4
A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank. A melted fuel tank can leak, increasing the risk of a fire.
The trunk latch may become damaged, preventing the opening of the trunk from the inside. A person inside the trunk compartment may become trapped, increasing their risk of injury.
The Remote Smart Parking Assist (RSPA) software may fail to prevent vehicle movement upon detection of an RSPA system malfunction. Unintended vehicle movement increases the risk of a crash.
The tire pressure label inside the driver's door and the owner's manual state an incorrect tire size. The incorrect tire information may mislead the vehicle owner to install the wrong tire size, potentially affecting vehicle handling, increasing the risk of a crash.
A recall may cover only some cars of a model year; the campaign size counts every model and year it lists. Enter your VIN at nhtsa.gov/recalls: dealers fix open recalls free.
Service bulletins from Hyundai: 103
Repair instructions Hyundai sent its dealers for symptoms seen in the shop on the 2020 Hyundai Sonata. Ask a dealer or mechanic for a bulletin by its number.
Some vehicles may have DTCs P218100, P2181F0, and/or P2181F1 (Cooling System Performance) set in the Engine Control Module…
The subject vehicles may have Diagnostic Trouble Code (DTC) P0451 stored in the ECU, which could cause the Check Engine Lamp to come…
Some vehicles may experience a warning lamp illumination for a diagnostic trouble code P2181 that is related to the Integrated Thermal Management Module (ITM)
Diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2
NHTSA defect investigations: 1
Loss of Motive Power
Neighbouring years
2019 Sonata: 162 complaints, keep it, but watch the engine · 2021 Sonata: 135 complaints, keep it.
Every Hyundai Sonata year
2000 · 2001 · 2002 · 2003 · 2004 · 2005 · 2006 · 2007 · 2008 · 2009 · 2010 · 2011 · 2012 · 2013 · 2014 · 2015 · 2016 · 2017 · 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026 · All Sonata years side by side
Other Hyundai models: Hyundai Accent · Hyundai Azera · Hyundai Elantra · Hyundai Elantra Touring · Hyundai Entourage · Hyundai Genesis · Hyundai Genesis Coupe · Hyundai Ioniq 5 · Hyundai Kona · Hyundai Kona Electric · Hyundai Palisade · Hyundai Santa Cruz · Hyundai Santa Fe · Hyundai Santa Fe Hybrid · Hyundai Santa Fe Sport · Hyundai Sonata Hybrid · Hyundai Tiburon · Hyundai Tucson · Hyundai Tucson Hybrid · Hyundai Veloster · Hyundai Veracruz · Hyundai XG350. All makes and models.
Questions
Is the 2020 Hyundai Sonata a bad year?
183 owner complaints to NHTSA. Engine and transmission complaints are in line with other Sonata years. At 78,000 miles the tool says: Keep it.
What are the most common problems with the 2020 Hyundai Sonata?
By owner complaints to NHTSA: fuel system (59), engine (32), electrical system (41), transmission and drivetrain (24), body structure (17).
How many recalls does the 2020 Hyundai Sonata have?
4 recall campaigns list this model year: Fuel system (NHTSA 25V-796), Latches and locks (NHTSA 22V-196), Electrical system (NHTSA 20V-213), Equipment (NHTSA 20V-122). A recall may cover only some cars; check by VIN at nhtsa.gov/recalls.
Method: counts of unverified owner complaints filed with NHTSA, compared only with other years of the same model (sales volumes are unknown, so no failure rate is computed). A system stands out at 40+ complaints and at least twice the model's quiet (lower-quartile) year, or twice the share across every vehicle of that model year. The mileage range is the 25th to 75th percentile of the mileages owners reported. Data received by NHTSA through November 5, 2026. Repair prices are typical US ranges from named sources, not quotes. Not a diagnosis and not financial advice. PulsCar is not affiliated with NHTSA. Check this car at your own mileage.