2016 Hyundai Sonata Complaints

SERVICE BRAKES — Filed 02/10/2026

I began braking and the brakes locked up. Braking to the floor and the car would not stop resulting in a car crash

AIR BAGS,UNKNOWN OR OTHER — Filed 01/14/2026

I was involved in a low-speed collision at a residential intersection after stopping at a stop sign and beginning to proceed. Going under 5 mph, I braked immediately, but contact occurred. Despite relatively minor front-end damage, the driver steering wheel airbag and driver knee airbag deployed. The passenger front airbag did not deploy, and no side or curtain airbags deployed. There was no significant intrusion into the engine compartment or passenger cabin. I am submitting this report due to concern that the driver airbags deployed in a low-speed impact that did not appear severe enough to warrant deployment. Pictures attached

ELECTRICAL SYSTEM,SEATS,UNKNOWN OR OTHER — Filed 11/20/2025

The driver’s seat / passenger seat assembly, including seat rails, mounting brackets, and Smart Junction Box (SJB) connections if electrical adjustment was involved, completely failed during a crash. The seat lifted off the floor anchors and almost entirely came apart, including both the seat cushion (where you sit) and the backrest, leaving the occupant crushed within the collapsed seat structure, resulting in catastrophic injuries. During the crash, the seat collapsed and disassembled, exposing the occupant to extreme trauma. This caused: •Pelvic fracture •Broken femur, hip, and back •Collapsed lung and punctured liver •Foreign object from the seat mechanism punctured pelvic bone The failure directly contributed to life-threatening injuries that would not have occurred if the seat had remained securely anchored. The malfunction posed an immediate risk of death and permanent disability. Not yet reproduced under controlled conditions. The incident has been documented by police and medical personnel. The vehicle is currently in a tow yard, and we have not had access to it, but it remains available for inspection by Hyundai, NHTSA, or a qualified service center Police: Yes, crash scene documented. •Insurance: We are unsure whether the insurance company has inspected the seat. The vehicle remains in the tow yard and has not been repaired or altered. •Manufacturer (Hyundai): Not yet inspected; formal inspection requested. The vehicle and seat are preserved and ready for inspection by Hyundai, NHTSA, or other qualified representatives. There were no warning lamps, messages, or prior symptoms of seat failure. The seat functioned normally prior to the crash, and the malfunction occurred only during the impact, demonstrating a sudden and catastrophic failure under crash conditions.

AIR BAGS — Filed 09/25/2023

On September 25, 2023, I was involved in a motor vehicle collision while driving my Hyundai Sonata 2016, during which the front driver-side airbag failed to deploy despite the impact being significant enough to cause injury. This non-deployment represents a malfunction of the airbag system, including its sensors and deployment components, and aligns with issues already reported in class-action complaints involving Hyundai vehicles, making my case further evidence that an airbag defect exists. Because the vehicle was declared a total loss by my insurance company and later sold at auction, the physical component is no longer in my possession now; however, I retain documentation on accident-related records that clearly show the airbag did not deploy. The failure of this critical safety system placed my safety at direct risk because the protective barrier intended to reduce impact forces was absent, resulting in greater injury than would reasonably be expected had the system functioned properly. The problem has not been reproduced yet because the vehicle was transferred to insurance immediately after the incident and was not repairable. But working with accident reconstruction engineers on this matter. Prior to the crash, the vehicle displayed no warning lights, SRS messages, or other symptoms indicating an issue with the airbag system, and at no time before the collision was I alerted to any malfunction that would have suggested the system would fail at the moment it was most needed.

ENGINE — Filed 05/18/2025

My car on the freeway started knocking. The check engine light came on. The car immediately caught fire. It is at the tow yard now. We just went through the oil consumption testing and the cleaning. I filed a report in November it failed for misfire and we paid to have the top rebuild. The car failed the oil consumption 1000 miles after the cleaning. We were told to continue to drive. We had 4 people in the car. I have the dash cam with the rod knock. The car has a check engine code. Hyundai needs to be held accountable.

UNKNOWN OR OTHER,ENGINE — Filed 09/09/2022

This event took place on or about [XXX]. A month or two prior, my vehicle had just undergone a safety inspection with over $2,000.00 worth of repairs that were performed with great care, due to noticing loss of power upon acceleration. I'm currently living in Wyoming, and the engine blew while driving on the highway in Colorado, causing a mild underbody fire while driving at high rate of speed. At this point, my safety is of great importance and concern, the radiator had internal damage that was not disclosed by the initial dealership, that took possession of my vehicle. So I truly don't know what or who to believe (which parts have been properly repaired on my vehicle or what has not), it took me to personally tow my own vehicle back to the local repair shop here in Wyoming, and the repair shop could not get power to the vehicle. Eventually the repair shop realized that the original "ground" bolt that "was" on my brand new battery was stripped out of place and replaced with a tapping screw, that's why no power was getting to the vehicle as needed to operate properly. The repair shop also noticed internal damage to the radiator (inside bay) with 2 puncture holes (that was not disclosed at any point of interacting with the dealership. Now my safety is an extremely huge concern. Again, I don't know if the vehicle is in worse or better condition with the most recent repairs that have been done to my vehicle. The engine was confirmed to have been damaged internally and externally "beyond repair". I was never given an exact description of any and all damages "requested by me at the time I called the dealership". My son and I are still without our vehicle, we are in dire need of transportation, and to have our vehicle back and running in a condition that is sufficient to perform for our everyday needs, to get back and forth to doctor appointments, etc. We are in great hopes to get this unnecessary nightmare behind us, so that we can press on with our lives....INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

AIR BAGS,UNKNOWN OR OTHER — Filed 05/30/2020

I was in a rear collision with an SUV but my air bags to the 2016 Hyundai Sonata did not deploy. Everybody was OK and nobody was injured in both parties.

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE — Filed 02/06/2024

On February 6, around 3:46am, parked my vehicle on the driveway I noticed a smell like smoke, I looked at my dashboard but nothing was on, no warnings, so I entered my house a few minutes later Possibly 4 I heard a noise look outside from my window an noticed my car was on fire, immediately called 911 car garage door also cut on fire and the vehicle next to it. I m requesting an investigation Police report 24-031575, my vehicle was towed by insurance company Start Casualty claim # 2024-90001577.

ENGINE — Filed 11/28/2023

On the evening of 11/28/2023 I had my vehicle parked in my garage of my home when my smoke detectors went off. I went to my garage to discover it was full of smoke and it particularly was coming from the front of the engine I had my son call the fire department and poured water on the small fire as it was still smoking when they arrived. there is visible burn marks on the engine hood from the fire

VEHICLE SPEED CONTROL,ENGINE — Filed 10/25/2023

The contact owned a 2016 Hyundai Sonata. The contact stated that while her son was driving at approximately 45 mph, the check engine warning lights illuminated. The vehicle began to shake, lost power, and failed to accelerate. The driver pulled over and noticed smoke, and the vehicle caught fire. The fire department was on the scene and extinguished the fire. It was unknown if a police report was filed. There were no reported injuries. The air bag did not deploy. The vehicle was towed to a tow lot. The local dealer was not contacted. The vehicle was not diagnosed or repaired.The insurance company deemed the vehicle a total loss. The manufacturer was not contacted. The contact mentioned that in 2021, the motor may have been replaced.The failure mileage was approximately 62,000.

ELECTRICAL SYSTEM,UNKNOWN OR OTHER,SERVICE BRAKES — Filed 10/12/2023

My husband (Scott) was driving the car on Florida highway 408 eastbound approaching the exit 21 on 10/12/2023 around 8 am. Scott heard something pop suddenly and saw fire shooting out from both sides of the car in the rearview mirrors. Upon noticing the fire, he tried to slow down to pull over the car, but brakes failed (went to the floor). A police officer on the road happened to see the fire so he drove next to my husband's car and Scott yelled at officer that he had no brakes. The officer went ahead of Scott to help Scott's car slow down. When approaching uphill slopes by the exit, Scott was finally able to use the emergency brakes to come to a complete stop. The fire engine came right away and put out the fire which took over 20 minutes. My husband is handicapped and him walking away from such car catastrophic fire unharmed was near miracle. Two weeks before the fire, I happened to take the car in for checkup at Greenway Hyundai Orlando and the 2.5 hour inspection found nothing wrong with my car. I wanted my car checked because my car stalled briefly pulling out of a parking space a few days earlier.

ELECTRICAL SYSTEM,ENGINE — Filed 08/20/2023

The contact owns a 2016 Hyundai Sonata. The contact stated while driving at 55 MPH, other drivers started beeping the horn and shouting that the vehicle was on fire. The contact immediately veered to the side of the road. The contact then noticed flames under the front end of the vehicle, near the engine location. There was no warning light illuminated. The contact stated that the fire was extinguished independently. There was no injury sustained. The contact stated that the vehicle was towed to her son-in-law's repair shop, where it remained. There was no police report filed. An unknown dealer was notified of the failure and informed the contact that a repair fee would be charged for the engine replacement. The vehicle was not diagnosed nor repaired. The contact related the failure to an unknown recall. The manufacturer was notified of the failure and advised the contact to take the vehicle to the dealer to be diagnosed. The failure mileage was approximately 108,000.

ENGINE — Filed 09/16/2023

09/16/2023: ENGINE CAUGHT FIRE ARRIVED AT WORK AT 830AM AND LEFT AT 4PM. WENT TO FEDEX (5 MIN AWAY FROM JOB) AND NOTICED BURNING SMELL. LEFT FEDEX (WAS THERE LESS THAN A MINUTE BECAUSE I WAS DROPPING ENVELOPE IN DROP BOX) AND NOTICED SMOKE COMING FROM UNDER HOOD. DROVE ABOUT A BLOCK AND WHILE MAKING A LEFT TURN I NOTICED MORE SMOKE COMING FROM UNDER THE HOOD. PULLED BACK INTO JOB'S PARKING LOT (SINCE IT WAS CLOSE) AND WITHIN 5 MINUTES THE ENGINE WAS IN FLAMES. FLAMES WERE EXTINGUISHED, BUT CAR WAS NO LONGER DRIVEABLE. INSURANCE CLAIM WAS FILED AND VEHICLE WAS DEEMED A TOTAL LOSS. CAUSE OF ENGINE FIRE IS STILL UNDETERMINED PER INSURANCE COMPANY.

STEERING,VEHICLE SPEED CONTROL,SERVICE BRAKES — Filed 07/10/2023

This vehicle had a complete engine failure. Since it is a hybrid, when the engine shut down, the vehicle lost all power. The driver had no control over steering or brakes. The vehicle crashed through three trees and into a house. Hyundai Motors of America and NHTSA are aware of the issues with this vehicle's engine, however, this engine was already replaced. The problem was that the "limp mode" did not enact in this specific car. I brought this to Hyundai's attention at least 20 times and expressed my concern about the threat this vehicle posed to me and anyone else on the road, yet they continued to ignore me or attempt to rectify the issue. This vehicle was part of the class action lawsuit. I was told, after the seventh time the vehicle broke down (fourth time after engine replacement) that Hyundai would buy back the vehicle. That never happened. The vehicle shut down without "limp/safe mode", with an entire loss of power eight times and was brought into the dealership. Hyundai refused to help me. I knew it would end in disaster, and it did. I'm sure my vehicle is not the only one that does not have a safe mode taking effect when the power shuts off and there is no steering or brakes at 70 mph. I am using the date for the last time the vehicle shut off and the driver lost control and hit a house. However, there are eight other times this happened. I have more information and documentation if needed. I'm attaching my first claim, documents collected after that claim, the accident report (did not have photos attached, the photos are from the scene when I went there the next day), and all email conversations with Hyundai since the first engine failure. My big concern here is that even though Hyundai did try to repair the recall issues, they ignored everything else. I told them over and over that the limp mode did not work. This made it morally impossible for me to sell, even if I wanted to. They refused to help. I worry there may be others out there with this issue.

ENGINE — Filed 07/22/2023

Engine began smoking while driving without warning. Driver looked at gauges, saw that everything looked normal, then pulled over and exited vehicle. Shortly thereafter (within 15 minutes,) front end of vehicle burned and melted. Vehicle is currently in possession of insurance company for inspection. Car had overheated 2 years before this incident. New thermostat had been installed at that time. Car burned through oil regularly. Driver refilled when filling gas tank. Car was up to date on oil changes.

AIR BAGS — Filed 05/17/2023

I was in a near head on collision that knocked me out of my lane and knocked me around my car (I was wearing the seatbelt) and the point of impact was on my driver side near my impact sensor and the damage continued to the other side of my vehicle including a crack in the filter in front of my radiator

ENGINE — Filed 03/21/2023

The contact owned a 2016 Hyundai Sonata. The contact stated while driving 2 mph, the vehicle seized and multiple warning lights were illuminated. The contact saw fire exiting from under the hood and under the vehicle. The contact was able to exit the vehicle safely before it was engulfed in fire. The fire department extinguished the fire but no fire report was filed. A police report was filed. The contact stated no one was injured nor sought medical attention. The vehicle was not drivable. The police officer deemed the vehicle a total loss. The vehicle was towed to the police department lot. The vehicle was not diagnosed. A dealer was not contacted. The manufacturer had not been informed of the failure. The failure mileage was approximately 100,000.

UNKNOWN OR OTHER,ENGINE,FUEL/PROPULSION SYSTEM — Filed 10/14/2022

2016 Hyundai Sonata (not part of any recall) driven short distance on expressway had "check engine light" come on. Pulled off of expressway and checked under hood...No visible issues. Chose to return home via side streets as car was riding rough and having problems with acceleration at that point. Short while later, heard loud noise and saw smoke coming from under hood. Pulled to the side of the road and exited car. Was told by bystander that car was on fire. Called Fire Dept, by the time of their arrival, entire front end ablaze, tires and body melted. Thankfully, fire extinguished before any explosion or damage to neighbor's property occurred. Vehicle was a total loss.

VEHICLE SPEED CONTROL — Filed 05/22/2016

The contact owns a 2016 Hyundai Sonata. The contact stated that while driving at approximately 30 MPH and approaching a traffic light, the accelerator pedal was released, the vehicle sped up, the brake pedal was depressed, and the vehicle stopped. The contact stated the failure occurred after the vehicle was taken to the dealer for a software recall update. The contact stated that no warning lights were illuminated. The contact stated that the vehicle was taken back to the dealer where another update was completed. The contact stated that 4 days later the failure recurred as the accelerated pedal was released, the vehicle accelerated however when she attempted to depress the brake pedal and the vehicle sped up. The contact stated that she rear-ended another vehicle and stated that the driver-side air bag was deployed. The contact stated that medical attention was required for being hit in the chest by the air bag. The contact stated she was unaware if the occupants of the other vehicles needed medical attention. A police report was filed. The vehicle was taken to the dealer however a failure cause was not diagnosed. The manufacturer was made aware of the failure however, no assistance was offered. The approximate failure mileage was 20,000.

ELECTRICAL SYSTEM,ENGINE — Filed 06/12/2022

Engine caught on fire while driving

SERVICE BRAKES — Filed 04/26/2022

The contact called on behalf of the driver. The contact owned a 2016 Hyundai Sonata. The contact stated while the driver was driving approximately 30 MPH the vehicle braking system functionality completely failed. Then shortly after there was smoke exhausted from the hood. There were no warning lights. The driver was able to cruise to the nearest parking, got the vehicle down to 5 MPH, and forced the brakes on. Upon exiting the vehicle the smoke became more intense and spread in the cab. The vehicle was destroyed by the fire. The fire department arrived and extinguished the fire. There was a police report filed. There were no major injuries; just minor smoke inhaled. The vehicle was towed to the wrecking yard. There were no medical reports. The manufacturer was not notified of the failure. The approximate failure mileage was 91,000.

EXTERIOR LIGHTING — Filed 02/08/2022

The contact owns a 2016 Hyundai Elantra. The contact stated that while driving, there was an abnormal burning smell detected. The police pulled the contact over, who informed her the headlights were blown. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed the wiring harness was melted. The vehicle was not repaired. The manufacturer was not contacted. The approximate failure mileage was 82,459. The VIN was not available.

UNKNOWN OR OTHER — Filed 02/01/2022

The contact owns a 2016 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, there was a knocking sound, and the vehicle lost motive power. Additionally, the vehicle consumed an excessive amount of oil, and there was a smoke odor detected. The check engine, oil, and two other unknown warning lights were illuminated. The vehicle was taken to the dealer on three separate occasions; however, the dealer could not duplicate the failure. The vehicle was then towed to an independent mechanic and diagnosed with engine failure. The vehicle was not repaired and will be towed back to the dealer. The manufacturer was made aware of the failure and informed the contact that they would call back. The failure mileage was unknown.

UNKNOWN OR OTHER — Filed 10/20/2021

The report is wrong i never hit the suv from the back aldo both hits on vehicles or on my driver's side and his rare back passenger side. I never did my report since i was in the ambulance the hole time and nver said my part of the story i was in pain and went to sleep

ENGINE — Filed 01/20/2022

The engine caught on fire while driving. Beginning back in June 2021, the CEL came on and placed the car into limp mode. Code P1326 was generated. Mileage at 91,220. Dealership confirmed engine bearing clearance test passed. Since then needed to add 1 to 1-1/2 quarts of oil every 1000 miles. Second CEL light came on in Nov 2021 and car went into limp mode. Code P1326 was generated again. Dealership confirmed engine bearing clearance test passed. Hyundai Corporate was contacted by the dealership to determine if engine can be changed out. It was declined. On 1/20/22, the car engine caught on fire with a likely total loss. No CEL was seen prior to this occurring. Approx. Mileage 100300