2020 Hyundai Sonata owner complaints

Heated seat burned through causing smell and potential burn of driver.

I took my vehicle in for an oil change and was advised that my car failed a recall. The PCV valve failed. After the dealership, explain this problem to me I no longer feel safe driving this vehicle. Imagine being told that the fuel tank can expand and pop up the backseat of your vehicle at any given moment or even cause the car to blow up and no warning lights coming on to alert you that this part had a defect.

The contact leased a 2020 Hyundai Sonata. The contact state that the radar in the vehicle interacted with the radar in Ford vehicles. While parking in a parking spot there was a beeping sound detected. While at a stoplight with a vehicle in front to the side, the radar engaged when a Ford vehicle drove up. The contact stated while turning nearby another Ford vehicle the radar engaged and the driver applied the brakes. The Forward Collision-Avoidance warning light was illuminated. The contact called the local dealer, but the vehicle was not taken to be diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 6.

My 202 Hyundai Sonata is involved in the current hyundai fuel system recall. on 10/26/25 the fuel tank expanded and caused three explosive "boom" sounds inside the vehicle while I was driving with passengers. The backseat began heating and rising upward due to fuel tank swelling. The tank became pressurized, hissing, bubbling, and would not accept fuel. The vehicle became inoperable. The car has now been at hyundai of camelback since 10/27/25 (30 days). Hyndai Corporate has repeatedly delayed providing a remedy and keeps telling me they "need another week". I have received no repair plan, and no decision. This violates the requirement for a timely recall remedy. The defect caused structural damage and created a serious safety hazard. "

What component or system failed or malfunctioned, and is it available for inspection upon request? The Fuel Tank expanded, was leaking gas from the gas tank opening. The expansion of the tank caused the metal plates/panel under the back seat to popup, where my child sits. Which caused a gap in the door. ir seepage from the back seat passenger door to where the fuel was leaking out the gas tank and also the fuel gauge on the dash was fluctuating. People on the highway was flagging me to let me know fuel was leaking. The fire department had to come and clear it. How was your safety or the safety of others put at risk? My child and I could have been seriously injured or killed. As well as people on the highway. It could have exploded. You can smell the gas in the car. The gas was c

As the vehicle was at a complete stop and waiting for a chance to get in traffic, the car hestiated and would not respond to the depress of the gas pedal, for a second or two... Very strange indeed!....is it a transmission issue or something else....the transmission shifts strange from the complete stop position...this happenes more than once! And one instance it actually jerked ( bucked) somehow...concerned about this...

I have the Chicco Fit360 and the magnetic chest clip is no longer magnetic it was coming apart with little to no movement. I would buckle the chest clip and then move it to put it in position and it would come apart. I know this is a common problem with this particular car seat and something needs to be done before a child dies or gets seriously injured because the chest clip comes apart while driving!

Gases from the dashboard heating cause a film to form between the windshield and the camera. Because of this, in heavy direct sunlight, lane keep assist toggles on and off without warning causing unintended lane departures with out warning. Also, when using smart cruise control, the vehicle slows to a stop but may continue moving slowly even after displaying the press gas to continue screen. The auto hold light does not illuminate.

While stopping at a major highway intersection on [XXX] for a red light vehicle stalls and will not start back up while everyone else continues at a 55 mph mile an hour passing me on each side! This happened more than 6 times . While you’re stuck in intersection,you have to keep trying to start the car eventually it will start . Apparently it is EGR valve and is a very common problem. IT IS NOTED IN THE common problem for this year making model and the repair cost is in the range of $1600 even the dealership said it is a very common problem. They have been experiencing it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I took my vehicle into the dealership when it was under 12,000 miles for another issue and mentioned a problem with the headlight on the right fogging up with moisture. I was immediately told that this had to be seen with their eyes because light cost more than $1,000. It has continued for over 1 1/2 years. Early this month, I took a picture at night and in the morning. The service manager wanted to add another hoop; can you get a picture of the water in it? The water is droplets on the light, decreasing visibility on the road. Pictures are attached. There is one picture that shows the left headlight with no issue.

My Passenger window fell down and will not go up, It is available for inspection upon request. Safety Risk is that the window is being help up by tape and if it falls all of a sudden while driving could break the glass and spread inside as well as cause object to fly out of the vehicle. This has not been inspected by the manufacturer or anyone No warning lamps or messages. I put my window down and then it never went back up and motor was just running and probably made it worse

The contact owns a 2020 Hyundai Sonata. The contact stated that while the vehicle was parked, the vehicle failed to start as intended. The contact stated that several unknown warning lights were illuminated. The contact stated that the vehicle eventually started and drove normally. The vehicle was then taken to an independent mechanic, where it was diagnosed and determined that the starter needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 27,000.

I own a 2020 Hyundai Sonata with factory-applied paint. The vehicle developed paint peeling/clear-coat failure on the driver-side rear quarter panel without any prior damage, accident, or repainting. The paint began separating from the body, exposing the underlying surface. I brought the vehicle to an authorized Hyundai dealer. The dealer acknowledged a paint adhesion failure and submitted the issue to Hyundai. Hyundai declined to fully cover the repair, stating the model year was not included in their paint warranty extension, even though similar peeling paint defects have been acknowledged and covered by Hyundai on earlier Sonata model years. The dealer ultimately repainted both rear panels due to the nature of the failure, but Hyundai required me to pay approximately 20% of the repair

On Nov. 2020 my husband and I purchased a new 2020 Hyundai Sonata with 2mls.off the showroom floor at Daytona Hyundai dealership, Daytona Beach,Fl. We moved to Ga.One day in December, I opened the driver side back door to put groceries in the backseat and I noticed water on the door frame at the bottom ,I thought maybe I might have left the window part of the way down and rain came in. a few weeks after that I went into town I was going to put groceries again in the driver side back door and water sitting on the bottom of the frame inside the door . The window was up .So this went on every time it rained. I drove my car to Rome GA at Heritage auto group they sell Hyundai’s And also service them. [XXX] in service department he’s the manager I told him about the door where I was finding wa

Steering wheel makes whining/scrubbing noise when turning. Steering a vehicle is a critical component of safety and being able to avoid dangerous situations. The problem has been reported, inspected, and confirmed by a dealer. The component has not been inspected by the manufacturer, police, or independent service center. There were no warning messages, lamps, or other symptoms of the problem prior to failure. The problem first appeared when the vehicle was under 15,000 miles. The dealership advised that the worm shaft assembly needs to be replaced.

In May of 2023 my check engine light came on. Took the car to the dealer and the diagnosis was that the egr cooler was the culprit so they replaced it and everything was fine until 12/21/2023. I am driving on the highway and suddenly I hear a loud alarm and upon checking my instrument cluster I see a warning for engine overheating, the heat was on but suddenly the smell of something burning covered the entire cabin of the vehicle. I had to pull over to the side in the middle of a busy highway in freezing conditions and shut my engine down to avoid further damage. I believe the egr cooler has failed once again inly this time leading to a more terrifying experience. My car was towed to the dealership but I am worried for myself and others with similar vehicles I would not like anyone to exp

2020 Hyundai sonata. Consumer writes in regards to lack of normal bluetooth functionality making vehicle unsafe. *ld *js

while driving my car on 3 different days the car slowed down, and the lights came EPB on, on the dashboard the EPB light came on the check engine light came on , forward collision light, auto hold light, slippery road light , and caution light with a ! mark.

I believe the transmission malfunctioned as I reached 60 MPH / 4000 RPMs on the highway when it suddenly did not want to accelerate past that. The more I stepped on the gas pedal, the more it slowed down. I attempted to use the paddle shifters to shift up or down, but I was unable to shift up and shifting down did not allow me to accelerate past 4000 RPMs. The flow of traffic was faster than I could keep up with, and not being able to accelerate made it unsafe to be on the highway. I had to pull over, and get off of the highway. I found that others have reported this same issue online with the same make/model/trim, but I have not had time to take it in to be looked at. No warning lamps, messages, or other symptoms prior to failure. I only noticed when I got on the highway and needed to rea

The contact owns a 2020 Hyundai Sonata. The contact stated while the contact was refueling the vehicle, the fuel was coming back out of the fuel tank onto the ground surface. The contact stated that the failure had occurred while traveling out of town. In addition, the contact stated that the failure had occurred several times and the check engine warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed a failed fuel tank sensor. The contact was informed that the fuel tank sensor light. The contact stated that when the independent mechanic pulled out the rear seat to perform the repair, the mechanic noticed that the metal sheet under the rear seat was fractured due to the pressure of the fuel tank. The vehicle was not repaired. The contact