NHTSA Complaints · Active Recalls · California Lemon Law Data
The NHTSA tracks consumer complaints, manufacturer recalls, and safety investigations for every vehicle sold in the United States. These publicly available records are a critical resource for California lemon law cases because they establish patterns of recurring defects.
As of June 2026, the NHTSA has logged 87 complaints against the 2020 Hyundai Sonata. Each complaint is filed by a vehicle owner or lessee through the NHTSA’s Vehicle Safety Hotline or online portal at SaferCar.gov. You can review all 2020 Hyundai Sonata complaints directly on the NHTSA complaint database.
The 2020 Hyundai Sonata has generated 167 NHTSA complaints and has 4 active recalls. If your 2020 Hyundai Sonata has experienced a defect that the dealer has been unable to repair after multiple visits, you may qualify for a full repurchase or replacement under California lemon law. Hyundai pays all attorney fees when we prevail. You pay nothing.
Fuel and propulsion system defects can cause stalling, fuel leaks, or power loss — all substantial impairments of use and safety. The 2020 Hyundai Sonata has generated 18 NHTSA complaints for this defect category. Owner reports include: “Something went wrong in the fuel tank that caused it to become so pressurized that the tank expanded up and out so far that it pushed the exhaust pipe down and my back seat of out place. The only issue I had was the car was accelerating slower than usual but it wasn’t even enough of a difference for someone who didn’t drive it every day to be able to tell. It did this for two days then the check engine light came on and it just read “powertrain”. Began slow acceleration on 06.08.2025. Check engine light came on the night of 06.09.2025. I took it to the dealership 06.10.2025. I immediately took it into the dealership and they told me the car could have exploded. There was a previous recall for the fuel pump that I had replaced at the dealership. After seeing my car, they said their techs and the techs at HMA have never seen one this bad and that maybe after replacing the recall part the system update failed in my vehicle and the issue was never actually resolved.” (NHTSA Complaint #11670759)
The 2020 Hyundai Sonata has generated 16 NHTSA complaints for this defect category. If your vehicle has experienced recurring issues in this area that the dealer has been unable to repair after multiple attempts, you may have a qualifying lemon law claim under California’s Song-Beverly Consumer Warranty Act. Owner reports include: “Coolant is leaking again after being fixed at a Hyundai dealer. If I don’t fix it, my car will overheat and catch fire in the middle of a public road. My warranty has now expired, so I’ll have to pay for the repairs myself. However, this problem is a design flaw, not related to the car’s age or mileage. Hyundai should fix this problem. I’m not the only one; there are a lot of people complaining about this.” (NHTSA Complaint #11696994)
Electrical system failures are notoriously difficult to diagnose and repair, which often results in multiple unsuccessful repair attempts — a key element of a lemon law claim. Reported issues for the 2020 Hyundai Sonata include infotainment malfunctions, battery drain, warning lights, power window failures, and intermittent starting problems. 11 NHTSA complaints have been filed for this category. Owner reports include: “The back up camera sometimes is only a black screen, it is random and has done it in all sorts of weather. Usually is corrected when vehicle is started next.” (NHTSA Complaint #11723910)
Engine and cooling problems are among the most serious defects under California’s Song-Beverly Act. Owners of the 2020 Hyundai Sonata have reported issues including stalling, overheating, loss of power, rough idling, excessive oil consumption, and check engine lights that return after dealer repairs. With 11 NHTSA complaints on record, this defect pattern is well-documented. Owner reports include: “I have had my car since January of 2023 and I have had no significant issues. I bought the car with roughly 30,000 miles, fast forward to February of 2026 it has about 123,000 miles and the engine is burning oil very fast. My car loses oil so fast the oil light comes on way early before my next oil change is due.” (NHTSA Complaint #11720439)
The 2020 Hyundai Sonata has generated 7 NHTSA complaints for this defect category. If your vehicle has experienced recurring issues in this area that the dealer has been unable to repair after multiple attempts, you may have a qualifying lemon law claim under California’s Song-Beverly Consumer Warranty Act. Owner reports include: “White pain is pealing off and it’s pretty bad especially when going through car wash” (NHTSA Complaint #11718241)
The following 4 recalls have been issued for the 2020 Hyundai Sonata by the NHTSA or Hyundai. If your vehicle is affected, the manufacturer is required to provide a free remedy. Check your VIN at NHTSA.gov/recalls.
Component: ELECTRICAL SYSTEM:SOFTWARE
Defect: See NHTSA database for details.
Risk: Unintended vehicle movement increases the risk of a crash.
Remedy: Hyundai will notify owners, and dealers will reprogram the RSPA software, free of charge. The recall began June 3, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai’s number for this recall is 191.
Component: EQUIPMENT:OTHER:LABELS
Defect: See NHTSA database for details.
Risk: 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.
Remedy: Hyundai will notify owners, and dealers will install new label stickers over the tire pressure label and in the owner’s manual, free of charge. The recall began April 22, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai’s number for this recall is 190.
Component: LATCHES/LOCKS/LINKAGES:TRUNK LID:LATCH
Defect: See NHTSA database for details.
Risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.
Remedy: Dealers will inspect the trunk latch and replace the trunk latch base, as necessary, free of charge. Owner notification letters were mailed May 26, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai’s number for this recall is 221/010G.
Component: FUEL SYSTEM, GASOLINE
Defect: See NHTSA database for details.
Risk: A melted fuel tank can leak, increasing the risk of a fire.
Remedy: 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
California’s Song-Beverly Consumer Warranty Act (Cal. Civ. Code §§ 1790–1795.8) is one of the strongest lemon laws in the United States. It protects buyers and lessees of new and certified pre-owned vehicles that develop substantial defects the manufacturer cannot repair after a reasonable number of attempts.
Under Cal. Civ. Code § 1793.22, a lemon law presumption is triggered when any of the following apply to your 2020 Hyundai Sonata:
Once the presumption is triggered, the burden shifts to Hyundai to prove the vehicle is not a lemon. Under Cal. Civ. Code § 1794(d), Hyundai must pay your attorney’s fees if you prevail — meaning qualified representation costs you nothing out of pocket.
If your 2020 Hyundai Sonata qualifies as a lemon under California law, Hyundai may be legally required to:
Step 1: Document every repair visit. Keep all repair orders, work orders, and dealer invoices. Each visit counts as a repair attempt, even if the dealer says nothing is wrong.
Step 2: Keep returning for repairs. You must give Hyundai a reasonable opportunity to fix the defect. Visit different authorized Hyundai dealers if needed and ask for written documentation of each visit.
Step 3: Contact a California lemon law attorney. Once you believe the threshold has been met — 4 attempts for non-safety defects, 2 for safety defects, or 30 days out of service — contact an attorney for a free case evaluation. Under § 1794(d), Hyundai pays your fees if you win.
Step 4: Send a demand letter. Your attorney will send Hyundai a formal demand letter. Most California lemon law cases resolve through negotiation without going to trial.
Under Cal. Civ. Code § 1793.22, four or more repair attempts for the same non-safety defect, or two attempts for a safety-related defect, triggers the lemon law presumption. Additionally, 30 or more cumulative days out of service qualifies regardless of the number of repair attempts.
Yes. Under Cal. Civ. Code § 1794(d), Hyundai is required to pay your reasonable attorney’s fees and court costs if you prevail in a lemon law claim. This means qualified lemon law representation is free to you if your case succeeds.
Yes. A recall is not required to file a lemon law claim. The Song-Beverly Act covers any substantial defect that impairs the use, value, or safety of the vehicle that the manufacturer cannot repair after a reasonable number of attempts. NHTSA complaints support the claim by establishing a pattern, but are not a prerequisite.
California lemon law claims are generally subject to a four-year statute of limitations from the date you discovered or should have discovered the defect. However, you must still be within the manufacturer’s original warranty period when the defect first appears. Contact an attorney promptly to preserve your rights.
If your 2020 Hyundai Sonata has a recurring defect, California’s Lemon Law may entitle you to a full refund, replacement vehicle, or cash settlement — at no cost to you.
Our attorneys answer the questions we hear most from California vehicle owners — fully updated for 2026.
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