Problems · by component
2011 Hyundai Sonata structure problems
73 owner complaints to NHTSA about the 2011 Hyundai Sonata cite structure, 2% of all 3,380 complaints for this model year.
Complaints
73
2% of all complaints
Crashes
5
Reported by owners
Fires
8
Reported by owners
Injuries
11
Reported by owners
What owners say about the structure
Verbatim from NHTSA complaints, newest first
“The Vehicle: "I have a 2011–2014 Hyundai Sonata with massive underbody rust." The Failed Fix: "Service Campaign 946 was completed on this car in 2017, but it did not work. The rust is now worse." The Safety Risk: "The structural metal is so rusty that I am afraid it will snap while I am driving. This makes the car unsafe." Hyundai is refusing to fix it because the car has a 'branded' (abandoned) title, even though the structural safety issue is still there."”
“The contact owns a 2011 Hyundai Sonata. The contact stated that while the vehicle was parked, an inspection revealed that the rear frame of the vehicle, located near the passenger’s side, was severely corroded. The dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and a case was opened. The approximate failure mileage was 148,757.”
“The interior and exterior driver side door and driver side rear door handles are no longer functional on this vehicle. This is a well known problem with these vehicles that poses a grave safety hazard. In the event of a fire or accident, it would be impossible to exit or gain access to my vehicle without breaking the side glass. I have spoken to my Hyundai dealer and they agreed that it is a known, dangerous problem, however no TSB or recall has been issued. My only recourse is to pay to have this defect repaired. This is the first vehicle I have ever owned that has had this type of issue.”
“Driving from home to a shopping center, approximately 25 miles, I did not observe any unusual noises nor smoke nor dashboard warning lights. Once I parked and shut off the engine in the shopping center parking lot, I observed a small amount of thick, white smoke coming from the hood on the front passenger side of my car, and then the smoke abruptly stopped. I was concerned enough that I decided I should probably move my car to a parking space a bit further away from the store I planned to go into in order to be further away from other vehicles. I started the engine again, and once again, no smoke nor unusual noises nor warning lights. I drove around to the next parking aisle and parked in a different parking space. Once I turned off the engine again, the smoke then immediately started from the right side of the hood again and quickly smoke started coming from the left side of the hood. I was quickly trying to grab my things to get out of the car as I saw the paint starting to peel off of the hood of my car. I was barely able to get out of my car as fire flames and very thick white smoke were then emerging from the hood. A person in the parking lot called 911…”
“I have a lot of paint chips on car. I see a lot of 2011 same model have the same problem. Most of the paint chips are coming from top of my windshield. I have complained a few years ago also hoping that this issue can be solved.”
“The rear passenger door will not open from the inside or outside. When my kids are in the back seat, they cannot get out that door and in the event of an emergency on the right side of the car, would be put at great risk not being able to open the left side passenger door. I had just opened the door to retrieve my backpack from the back seat and tried the door again and it was stuck. I unlocked the doors from the front seat and tried again to no avail. I went inside the car to try and open it and despite it being unlocked, it will not open. the interior latch feels like it is not moving anything when I try and open it, but the door acts like it is locked and cannot be opened with the handles. I have not taken it to the dealer yet, but plan to if I cannot fix it on my own.”
Showing 6 of 73 reports. Read every report on NHTSA.gov.
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026NHTSA vehicle page
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.