2023 Hyundai Sonata Owner Complaints

While on the highway, my car suddenly started shaking violently and losing power. I lost steering and was unable to accelerate. I pulled over to the side of the road and the vehicle would not start again. I took it in and a fuel injector was stuck open and it had flooded my engine. This was the second time with this vehicle that this happened.

1/30/2023

I was driving on the freeway, at the speed limit, cruising along. Then all of a sudden, my vehicle starts to decelerate from 65 MPH and I push the gas, thinking I must have let up too much on the pedal. However, that only causes the RPM to drastically rise with NO change in my speed. I thankfully managed to maneuver from the far left lane to the freeway shoulder on the far right. The whole time, my speed was around 40 MPH and dropping drastically. Trying to safely navigate a slowing vehicle on a 65+ Texas freeway is an adrenaline-rush that I wouldn’t wish on anybody. I was severely panicking. I was almost hit by several vehicles in my maneuvering. I could have died last night. Once on the shoulder, I tried to start my car. I thought it may be a battery issue, but it turned on. It didn't start, though. The lights came on, as did all of the typical system/dash lights that usually indicate when a car’s engine hasn’t “turned over.” I used Bluelink to call for roadside assistance (since I’m only a little over 2 months into ownership) and waited. I was escorted off of the freeway to safety — thanks to a 3-car police escort AND free city tow trucks — and eventually picked up by Hyundai-serviced AAA. The latter then towed my vehicle to the dealership where I bought my Sonata. My car is currently being checked/inspected by my dealer (North Freeway Hyundai) and I only have gotten the following notice from Bluelink: "A possible condition with your Engine Control System has been detected with your 2023 SONATA on 02/22/2023 at 07:23 am CST. A full system check is recommended to be done soon." I checked and there are no open recalls (currently). Even more concerning, my car recently underwent complimentary maintenance, including an oil change, through my dealer (on February 13, 2023 - I have the receipt), was good on gas, and had no warning lights displaying. Until it stopped running — the time I tried to start it on the side of the road, the dash showed an “engine” light.

2/22/2023

I was driving on the freeway, at the speed limit, cruising along. Then all of a sudden, my vehicle starts to decelerate from 65 MPH and I push the gas, thinking I must have let up too much on the pedal. However, that only causes the RPM to drastically rise with NO change in my speed. I thankfully managed to maneuver from the far left lane to the freeway shoulder on the far right. The whole time, my speed was around 40 MPH and dropping drastically. Trying to safely navigate a slowing vehicle on a 65+ Texas freeway is an adrenaline-rush that I wouldn’t wish on anybody. I was severely panicking. I was almost hit by several vehicles in my maneuvering. I could have died last night. Once on the shoulder, I tried to start my car. I thought it may be a battery issue, but it turned on. It didn't start, though. The lights came on, as did all of the typical system/dash lights that usually indicate when a car’s engine hasn’t “turned over.” I used Bluelink to call for roadside assistance (since I’m only a little over 2 months into ownership) and waited. I was escorted off of the freeway to safety — thanks to a 3-car police escort AND free city tow trucks — and eventually picked up by Hyundai-serviced AAA. The latter then towed my vehicle to the dealership where I bought my Sonata. My car is currently being checked/inspected by my dealer (North Freeway Hyundai) and I only have gotten the following notice from Bluelink: "A possible condition with your Engine Control System has been detected with your 2023 SONATA on 02/22/2023 at 07:23 am CST. A full system check is recommended to be done soon." I checked and there are no open recalls (currently). Even more concerning, my car recently underwent complimentary maintenance, including an oil change, through my dealer (on February 13, 2023 - I have the receipt), was good on gas, and had no warning lights displaying. Until it stopped running — the time I tried to start it on the side of the road, the dash showed an “engine” light.

2/22/2023

The contact owns a 2023 Hyundai Sonata. The contact stated that while her daughter was driving at an undisclosed speed, the vehicle lost motive power. An unknown warning light was illuminated. The vehicle was towed to the dealer; however, no error code was retrieved. The failure recurred while the contact was driving at 60 MPH. The vehicle was then taken to Serra Hyundai (1503 Gadsden Hwy, Trussville, AL 35235); however, no error code was retrieved, and the vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 80.

6/21/2023

I was driving on the freeway, at the speed limit, cruising along. Then all of a sudden, my vehicle starts to decelerate from 65 MPH and I push the gas, thinking I must have let up too much on the pedal. However, that only causes the RPM to drastically rise with NO change in my speed. I thankfully managed to maneuver from the far left lane to the freeway shoulder on the far right. The whole time, my speed was around 40 MPH and dropping drastically. Trying to safely navigate a slowing vehicle on a 65+ Texas freeway is an adrenaline-rush that I wouldn’t wish on anybody. I was severely panicking. I was almost hit by several vehicles in my maneuvering. I could have died last night. Once on the shoulder, I tried to start my car. I thought it may be a battery issue, but it turned on. It didn't start, though. The lights came on, as did all of the typical system/dash lights that usually indicate when a car’s engine hasn’t “turned over.” I used Bluelink to call for roadside assistance (since I’m only a little over 2 months into ownership) and waited. I was escorted off of the freeway to safety — thanks to a 3-car police escort AND free city tow trucks — and eventually picked up by Hyundai-serviced AAA. The latter then towed my vehicle to the dealership where I bought my Sonata. My car is currently being checked/inspected by my dealer (North Freeway Hyundai) and I only have gotten the following notice from Bluelink: "A possible condition with your Engine Control System has been detected with your 2023 SONATA on 02/22/2023 at 07:23 am CST. A full system check is recommended to be done soon." I checked and there are no open recalls (currently). Even more concerning, my car recently underwent complimentary maintenance, including an oil change, through my dealer (on February 13, 2023 - I have the receipt), was good on gas, and had no warning lights displaying. Until it stopped running — the time I tried to start it on the side of the road, the dash showed an “engine” light.

2/22/2023

Transmission goes into limp mode Please note this is an N line and shift points are low taking off from a light vehicle goes into limp mode in first 150' cars to the rear almost ran into the back of the vehicle. Car is 2 days old and I have an appointment tomorrow to have it looked at. This sounds like similar problem that caused a recall last year on the 2022. This is a dual clutch auto.

9/27/2023

When I approach an intersection to stop my car auto shut off engages. When trying to hit the gas to release my car from auto shut off the emergency auto shut off engages and I must put my car in park. Turn the ignition to off and then crank my car back all the way on. Release the park and drive. This happens intermittently for several weeks and I’ve almost been rear ended several times. I have taken the car to a Hyundai dealership for the issue and they tell me nothing is wrong.

7/12/2023

I have had three occasions where the dashboard lights would flash and the car would lose all power. The first occasion occurred on December 29th at around 12:20 pm at a crowded intersection. The dashboard lights lit up and all of a sudden the car had no power at all. I managed to get it through the intersection and pull it off to the side of the road. To start it up I have to TURN OFF THE CAR by putting it in park and start it up again. This is stressful and terrifying to think about if this had happened on the freeway. Additionally, I took the car to get serviced and was charged a $1,800 bill to fix it in January. This repair took two weeks to complete. The car has since turned off two additional times on February 15th going down a hill at 40 mph and March 26th on a mountain road going 60 mph. I am very concerned this will happen on the highway and I will get into a serious accident or worse. To make matters more difficult, I have taken the car back to the Hyundai dealer again to have it looked at in April and will most likely be without the car for at least another week. I bought the car brand new and the check engine light has gone off four times since then.

4/3/2024

P074D73 is code showing up coming up and going off after sometime. This is code something related to the Transmission. Worried if it could cause the Transmission to fail which may result in loss of power during the drive which could potentially cause fatal accidents. It occured Multiple times. Attached the screenshots

12/19/2022

When I approach an intersection to stop my car auto shut off engages. When trying to hit the gas to release my car from auto shut off the emergency auto shut off engages and I must put my car in park. Turn the ignition to off and then crank my car back all the way on. Release the park and drive. This happens intermittently for several weeks and I’ve almost been rear ended several times. I have taken the car to a Hyundai dealership for the issue and they tell me nothing is wrong.

7/12/2023

Purchased a new Hyundai 2023 Sonata from McGovern Hyundai Rt 2 May 22, 2023. After two weeks of driving the vehicle, I noticed it hesitates when I push down on the gas pedal. I had planned to have the dealership take a look but have a very busy schedule, the issue continued each time I drove the car to the point it was hesitating, basically pausing as I cross intersections. On the 26th of July I was driving on the highway, as I started to experience issues when stepping on the gas. Entering a tunnel in Boston, I pushed down on the gas pedal and noticed the car was decelerating, I was losing speed, in a panic in the center lane of the tunnel, I was able to get the car over to the far right. The car was shaking aggressively then finally just gave out and I called 911. They towed the vehicle to the police headquarters, I called Hyundai for assistance. Had some hiccups but two days later they were able to service the vehicle, supposedly found a faulty fuel injector. They changed out the 1 faulty injector test drive and said the problem was fixed. I picked up my car on July 28th 2023. There is something still wrong with the car, it still has some hesitation and now misfires. Have not heard from Hyundai, I was assigned a case manager and told someone would follow up, no one has reached out. So lucky my children were not in the car and that i'm safe. I could have been killed, others could have been hurt/killed. This should not happen to brand new cars.

8/5/2023

My concern is a potential unintended acceleration forward as. I was. parking vechicle. Sudden burst of speed, went thru shrubbery and off a 2 foot wall. Felt as if we were taking off a runway in a plane. Car went nose up over the wall and then dropped into a neighbor yard digging a divot, ripping rear left fender and bumper with some undercarriage problems. My spouse and I were seatbelted and not injured. I can not recall any safety warning until car stopped and then do recall a message being on dash but cannot presently recall what it said. Vehicle currently being worked on at collision center where Insurence Appraisor gave go ahead with estimate to repair damages

9/1/2023

The brake rotors are faulty and become warped at 9k mile I now have 27k and are extremely warped causing braking issues at higher speeds. I have been waiting over two months for new rotors from the dealer with no word as to when they will arrive. If the vehicle is left un-driven for a couple days the rotors will become rusted. Even the brand new vehicles in the Hyundia showroom are covered in rust. The suspension of the rear shock are extremely weak and bottoms out on the smallest rut. Cornering I’m the vehicle is subject to enormous amounts of whee hop which could result in an accident.

9/24/2023

Forward Collision Warning appeared, vehicle lost power and would not accelerate. Vehicle kept loosing power. Multiple codes appeared. I am an ASE certified mechanic, so I went to my own business to get my scanner and there was a list of codes. Vehicle is currently at dealership and they are tracking down issues. Currently blaming an ECM but unsure. This is the second vehicle I have had this exact issue with. I have video that it won't allow me to upload of all the codes. I have a video of a previous issue, with a different vehicle. It's a 2023 Hyundai Santa Fe

11/8/2023

This is the 3rd time it happened to me. I was driving on the highway at speed 60-70 and a flash came across my dash that said emergency brake warning and my car started slowing down. I panicked and pulled over the road. The warning came on so fast and not even a min it stood on. It went off within 5 seconds. This is a safety hazard and can cause death when this happens. Please issue a recall for this to be fixed because this is dangerous to me and other drivers. I want my money back because this is the manufacturer defect or issue. They need to correct this before fatalities happen.

3/1/2024

On 4 occasions in the last 4 months when I push the gas my cars rpm will go up but the car does not accelerate. This has happened twice on the interstate when trying to merge with trsffic and twice in city traffic, once when making a lefthand turn across oncoming traffic and once just driving down the road. I have taken the car to 2 separate dealerships for a total of 3 times and they drive it a few miles and tell me they can't duplicate the issue. I just picked my car up today after leaving it for 6 days. On my way home the emergency breaking system activated for no reason slowing my car down on the interstate. Both of these issues could get me or someone elas killed. I have not even had this car for 2 years and I am afraid to drive it. Please help. I know I am not the only person with this issue because I can see others on the internet who also have been told that the dealership can't dupe the problem. Even the dealership I just picked it up from said they had another car there with the same problem that they can't duplicate so there is nothing they can do.

10/11/2024

On a highway cruising at 70mph with the ACC (Adaptive Cruise Control ) on and following distance set at max a car from another lane turned into my lane and then continued to an off ramp. My car initially braked and then downshifted from 8th to maybe 4th and accelerated hard - scaring me and my passengers. I did add to the actions of the car by pressing the following distance button on the steering wheel a few times. I had owned a 2016 Sonata with ACC and drove over 100K miles with ACC operating. That is why i pressed the following distance button - to lessen the actions of the car when the car entered my lane. The 2016 also had a ACC setting of Fast, Normal, & Slow (I used normal). The 2023 has no ACC setting. I did complain to my dealer and he said this was normal and nothing happened. I feel this is dangerous so reported it to Hyundai Customer Service. They told me to go to my dealer.

12/18/2022

Vehicle’s front collision sensor popped up on dash, vehicle lost all power. Almost was hit by a group a semi trucks hauling a wide load that wouldn’t have been able to stop in time. This is the 3rd time it has happened in a week and a half.

11/9/2023

The contact owns a 2023 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the air bag warning light illuminated. Additionally, the contact stated that the rear passenger’s and rear driver's side doors were leaking. The vehicle was taken to the dealer however, the mechanic was unable to duplicate the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 140.

6/28/2023

See attached document for complaint

4/16/2024

Forward Collision Warning appeared, vehicle lost power and would not accelerate. Vehicle kept loosing power. Multiple codes appeared. I am an ASE certified mechanic, so I went to my own business to get my scanner and there was a list of codes. Vehicle is currently at dealership and they are tracking down issues. Currently blaming an ECM but unsure. This is the second vehicle I have had this exact issue with. I have video that it won't allow me to upload of all the codes. I have a video of a previous issue, with a different vehicle. It's a 2023 Hyundai Santa Fe

11/8/2023

During snow and icing conditions the forward collision radar in the logo gets covered up and becomes inoperable. This at the very time that we most need forward collision warning. It would helpful if there was electric deicing in the unit, much like the rear view side mirrors.

10/30/2024

The contact owns a 2023 Hyundai Sonata. The contact stated while driving at various speeds, there was a loud sound coming from the rear end underneath the floorboard like a part slamming on the undercarriage of the vehicle. The contact stated that the fuel gauge suddenly indicated that the fuel tank was EMPTY. The vehicle was taken to the dealer who diagnosed that the gas valve and electronic control unit (ECU) had failed. The contact stated that the gas valve was replaced, and the electronic control unit (ECU) was updated. After receiving the repair, the contact noticed that while attempting to accelerate, the vehicle downshifted before shifting to the desired gear and accelerating. The failure was most persistent while driving uphill. The check engine warning light was illuminated. The vehicle was taken to another dealer, All Star Hyundai (3950 Century Ct, Pittsburg, CA 94565) who was unable to diagnose the vehicle due to not having the tool necessary to detach the fuel tank. The vehicle was then taken to another dealer, San Leandro Hyundai a Carnamic Car Center (1066 Marina Blvd, San Leandro, CA 94577) who diagnosed that the pressure valve was swollen and the entire fuel tank and pressure valve needed to be replaced. The vehicle was not repaired. Due to the inconsistency of diagnostic results, the contact decided to take the vehicle to another dealer, Fremont Hyundai (43690 Auto Mall Cir, Fremont, CA 94538) who diagnosed that the pressure valve was swollen but had not diagnosed that the fuel tank needed to be replaced due to not finding a failure with the fuel tank. The manufacturer was not made aware of the failure. The failure mileage was approximately failure mileage was 75,000.

2/7/2025

The contact owns a 2023 Hyundai Sonata. The contact stated that while driving at 35 MPH, the fuel mileage abnormally increased from 320 to approximately 431. An unknown message was displayed, and the contact received a notification on the Mobile App about a diagnostic trouble code for the EVAP sensor. The vehicle was taken to the dealer, where it was diagnosed, and determined that the EVAP system valve was stuck open. The dealer replaced the EVAP system, and the dealer then determined that the fuel tank was swollen due to the failure. The contact stated that the rear seat sensor was malfunctioning and was causing a warning light to illuminate erroneously, which the dealer related to the fuel tank swelling and lifting the metal underneath the seat. The dealer also replaced the fuel tank. The vehicle was repaired. The manufacturer was notified of the failure and covered the repairs. The failure mileage was approximately 73,245.

11/6/2025

The contact owns a 2023 Hyundai Sonata. The contact stated that while driving at approximately 60 MPH, the vehicle inadvertently decelerated to approximately 30 MPH and stalled. The check engine warning light illuminated. The contact was able to veer the vehicle off the road. The contact then stated that after she exited the vehicle, she noticed a white cloud of smoke coming from the exhaust and an abnormal odor outside the vehicle. The vehicle was towed to the dealer where it was diagnosed that cylinder #3 fuel injector failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact stated while driving approximately 60 MPH, the vehicle hesitated and then stalled. The vehicle was towed to the dealer where it was diagnosed and determined that cylinder #2 fuel injector failed and needed to be replaced. The vehicle was currently at the dealer. The manufacturer was notified of the failure and the contact was provided a case number. The failure mileage was approximately 5,070.

6/2/2023

The contact owns a 2023 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the air bag warning light illuminated. Additionally, the contact stated that the rear passenger’s and rear driver's side doors were leaking. The vehicle was taken to the dealer however, the mechanic was unable to duplicate the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 140.

6/28/2023

The brake rotors are faulty and become warped at 9k mile I now have 27k and are extremely warped causing braking issues at higher speeds. I have been waiting over two months for new rotors from the dealer with no word as to when they will arrive. If the vehicle is left un-driven for a couple days the rotors will become rusted. Even the brand new vehicles in the Hyundia showroom are covered in rust. The suspension of the rear shock are extremely weak and bottoms out on the smallest rut. Cornering I’m the vehicle is subject to enormous amounts of whee hop which could result in an accident.

9/24/2023

MY 2023 HYUNDAI SONATA LIMITED HAS AN ISSUE WHERE WATER ENTERS THE REAR LEFT DOOR AND GETS TRAPPED BETWEEN THE LOWER DOOR SEALS. WATER POURS OUT WHEN THE DOOR IS OPENED. A GOOGLE REVIEW OF "SONATA REAR DOOR LEAK" SHOWS THIS IS A WIDE SPREAD ISSUE WITH THIS DOOR AND CAR MODEL. IF THIS WERE TO OCCUR IN A NORTHERN CLIMATE THE DOOR WOULD HAVE ICE COLLECT BETWEEN THE DOOR AND DOOR SILL AND PREVENT THE DOOR FROM OPENING IN AN EMERGENCY. GOOGLE SHOWS NUMEROUS PEOPLE HAVE TRIED TO GET THIS ADDRESSED . MOST WITH NO SUCCESS FROM HYUNDAI. I HAD TAKEN MY CAR TO COCONUT CREEK HYUNDAI IN COCONUT CREEK FLORIDA IN AUG 2023 AND WAS TOLD "THIS CONDITION IS COMMON TO THE MODEL". NO FIX ATTEMPTED. I ESCALATED TO HYUNDAI USA, AND THEY LITERALLY STATED THEY CANNOT SUPERCEED THE DEALER AND TO TAKE THE CAR ELSEWHERE. THEY IGNORE THE DOOR ISSUE AND ALSO STATED ON RECORDED CALL ( THEIR RECORDING) THAT THIS CONDITION IS COMMON TO THE MODEL. I FEAR THE FIRST ACCIDENT THAT THE DOOR CANNOT BE OPENED DUE TO INTERNAL ICE COLLECTION. PLEASE JUST GOOGLE "SONATA WATER IN DOORS" TO SEE HOW COMMON THIS IS!

10/11/2023

Forward Collision Warning appeared, vehicle lost power and would not accelerate. Vehicle kept loosing power. Multiple codes appeared. I am an ASE certified mechanic, so I went to my own business to get my scanner and there was a list of codes. Vehicle is currently at dealership and they are tracking down issues. Currently blaming an ECM but unsure. This is the second vehicle I have had this exact issue with. I have video that it won't allow me to upload of all the codes. I have a video of a previous issue, with a different vehicle. It's a 2023 Hyundai Santa Fe

11/8/2023

Vehicle’s front collision sensor popped up on dash, vehicle lost all power. Almost was hit by a group a semi trucks hauling a wide load that wouldn’t have been able to stop in time. This is the 3rd time it has happened in a week and a half.

11/9/2023

Instrument cluster lighting is too bright even on lowest setting. Combined with poor side visibility from headlamps it is easy to hit object or pedestrians when turning on unlit areas. Have run over a curb three times and damaged two wheels because they can't be seen from the overly bright instrument lighting at night.

2/3/2024

Instrument cluster lighting is too bright even on lowest setting. Combined with poor side visibility from headlamps it is easy to hit object or pedestrians when turning on unlit areas. Have run over a curb three times and damaged two wheels because they can't be seen from the overly bright instrument lighting at night.

2/3/2024

See attached document for complaint

4/16/2024

On two separate occasions, one at @9500 miles and the next at @19,000 miles the car engine started shaking and lost all power while driving. Unable to steer car. Both times towed to dealer and they say it needs new spark plugs and need to clean cylinders. They do not know root cause of problem and have not done any testing of the engine, no leak/compression testing. Dealer refuses to cover cost of repairs saying out of warranty but cannot give any assurances this won’t happen again. I’ve requested they contact Hyundai engineers to find out what’s causing this and, to date, they’ve done nothing. Vehicle is unsafe to drive and is still at dealership with no reason to underlying issue.

6/14/2024

Hello, I have Hyundai Sonata 2023. The fuel tank of this car is expanded on [XXX]. I have never heard about this issue to any cars. I took my car to dealership they said they don’t know why this happened and they said they cannot fix it, my car at the dealership more than a month. I have created a case with Hyundai corporate office in CA, it’s been a month since this case was created and I could reach out to my case manager only twice for this period of time. They are keep saying they are working on it, but no results they don’t even look at my car. Today I barely could reach my case manager and she told me that this is not under warranty and I will need to fix it out of my pocket. When I bring the car to the dealership they told me this not under warranty since warranty was up to 60k miles, I have 90k I asked them to fix it and I will pay but they said they don’t know how to fix it. Today I have researched and found that this issue is really common among Kia K5 and Hyundai Sonata’s 2021 2024, I will provide a link here: [XXX] Please check this link and you can see that most of the cars fuel tanks are expanded and back seats popped up. I have same exact problem. Kia asked drivers to inspect the cars with this issue and they said they will fix it for free since this is fuel tank defect. But what should I do with my Hyundai Sonata. I have same exact issue as you see at the link I have provided. I had powertrain DTC PO451 since march of this year dealership said just check if gas cap is on properly, but this caused this issue I see Hyundai will not help me it will almost 2 month I don’t have my car and I am still paying for it, please let me know what I can do Thank you! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

8/29/2024