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2020 Hyundai Sonata problems: engine and transmission complaints and recalls
49% of relevant owner complaints filed with NHTSA on the 2020 Hyundai Sonata are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.
Worse than 63% of the 1,790 model years we track (2010–2023).
Excludes 9 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 47%).
Does the 2020 Hyundai Sonata have fuel system problems?
Owner complaints say yes, as a model-year pattern. 91 of 185 relevant complaints filed with NHTSA about the 2020 Hyundai Sonata concern the engine, transmission or fuel system (49%), and the largest group is filed under fuel/propulsion system (46). For comparison, the 2019 scores 75% and the 2021 scores 52%. On a test drive, check for hard starts, stalling, hesitation, a fuel smell or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2020 compares with other Hyundai Sonata years
Of the 14 Hyundai Sonata years with enough complaints to score, the 2020 is the 3rd-best on engine and transmission share (49%). The worst is the 2019 (75%), the best the 2010 (18%). By volume, the 2020 drew 194 complaints (91 drivetrain), against 161 for the 2019 and 134 for the 2021.
Hyundai Sonata years to avoid and best years →
2010 Sonata problems · 2011 Sonata problems · 2012 Sonata problems · 2013 Sonata problems · 2014 Sonata problems · 2015 Sonata problems · 2016 Sonata problems · 2017 Sonata problems · 2018 Sonata problems · 2019 Sonata problems · 2020 · 2021 Sonata problems · 2022 Sonata problems · 2023 Sonata problems
The rest of the picture on the 2020 Hyundai Sonata
- The mileage where it happens. When owners of the 2020 Hyundai Sonata said the problem showed up, and the range most of them fell in.
- What the repair costs. Typical fuel system repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 91 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
2020 Hyundai Sonata fuel system recalls
Yes. NHTSA lists 1 recall campaign on the 2020 Hyundai Sonata involving the engine, transmission or fuel system, out of 4 in total. A recall is the manufacturer admitting a defect and paying to fix it; whether a specific car still has one open depends on its VIN, which the full report checks. The owner complaints above are a separate record and often point at problems that never became a recall.
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.
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…
3 other recalls on this model year (airbags, lighting, brakes and the rest)
Source: NHTSA recall campaigns filed against this year, make and model; one of NHTSA's listings did not answer when this page was built, so the list may be incomplete. Checked October 3, 2026.
Checking one particular 2020 Hyundai Sonata? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
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Does the 2020 Hyundai Sonata have fuel system problems?
Owner complaints say yes, as a model-year pattern. 91 of 185 relevant complaints filed with NHTSA about the 2020 Hyundai Sonata concern the engine, transmission or fuel system (49%). Before buying one, have an independent mechanic check the fuel system and ask the seller whether it has been repaired or replaced.
What is the most common problem with the 2020 Hyundai Sonata?
Going by NHTSA owner complaints, the most common problem filed against the 2020 Hyundai Sonata is electrical system: 46 of 194 complaints (24%) name it, followed by fuel/propulsion system (46) and engine (39). A complaint can name more than one component, so these overlap. Engine, transmission and fuel-system complaints together make up 49% of the relevant total.
Is the 2020 Hyundai Sonata reliable?
On the engine and transmission, owner complaints point to a weak spot: 49% of relevant complaints filed with NHTSA concern the drivetrain (high signal). That is worse than 63% of the 1,790 model years we track. Among the 14 Hyundai Sonata years we score, it ranks 3rd-best. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2020 Hyundai Sonata?
Yes. NHTSA lists 1 recall campaign on the 2020 Hyundai Sonata involving the engine, transmission or fuel system, out of 4 in total: 25V796000 (fuel system, gasoline). Whether a specific car still has one open depends on its VIN.
Which Hyundai Sonata years are better?
Among the Hyundai Sonata years we track, the 2010 (18%) and the 2011 (43%) have a lower engine and transmission complaint share than the 2020 (49%). Manufacturers fix things mid-generation, so the year before or after can be a different car. Every year side by side: https://thelanecheck.com/cars/hyundai-sonata
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Check a VINExperimental model-level information. This is not a vehicle inspection, vehicle-history report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition of any individual vehicle. Combined across 2 body styles NHTSA files separately.