2023 HYUNDAI SONATA

FUEL/PROPULSION SYSTEM

I was driving my 2023 Hyundai Sonata with 22,000 miles on I-96 near Grand Rapids Michigan at or slightly below the speed limit of 70 MPH. Suddenly, with no advance warning of any kind, the engine shut down. I was able to coast and maneuver to the right shoulder of the road while avoiding traffic, including a large tractor trailer that almost hit us. The vehicle than had just enough power to get off the next exit and on a local side street. At that point the vehicle would not restart and you could smell a strong odor of fuel. I called Hyundai and they sent a tow truck to take it to the nearest dealer. (I am 700 miles from home). The dealer's service department diagnosed the problem then replaced the fuel injectors still under warranty.

ENGINE

I was driving my 2023 Hyundai Sonata with 22,000 miles on I-96 near Grand Rapids Michigan at or slightly below the speed limit of 70 MPH. Suddenly, with no advance warning of any kind, the engine shut down. I was able to coast and maneuver to the right shoulder of the road while avoiding traffic, including a large tractor trailer that almost hit us. The vehicle than had just enough power to get off the next exit and on a local side street. At that point the vehicle would not restart and you could smell a strong odor of fuel. I called Hyundai and they sent a tow truck to take it to the nearest dealer. (I am 700 miles from home). The dealer's service department diagnosed the problem then replaced the fuel injectors still under warranty.

UNKNOWN OR OTHER

The vehicle went in for repair at the dealership early July for a check engine light and DTC error code. It was revving high after being driven for more than 20 min or so and wouldn’t get to above 60 mph. Jerky, dangerous acceleration and deceleration seemingly out of nowhere. The dealership replaced the fuel pump which is what they said was causing the error. Today on August 10th, check engine light popped up again with a DTC error code. Weird acceleration and deceleration and general jerkiness when driving. Scheduled service appointment for next week.

FUEL/PROPULSION SYSTEM

The vehicle went in for repair at the dealership early July for a check engine light and DTC error code. It was revving high after being driven for more than 20 min or so and wouldn’t get to above 60 mph. Jerky, dangerous acceleration and deceleration seemingly out of nowhere. The dealership replaced the fuel pump which is what they said was causing the error. Today on August 10th, check engine light popped up again with a DTC error code. Weird acceleration and deceleration and general jerkiness when driving. Scheduled service appointment for next week.

ENGINE

The vehicle went in for repair at the dealership early July for a check engine light and DTC error code. It was revving high after being driven for more than 20 min or so and wouldn’t get to above 60 mph. Jerky, dangerous acceleration and deceleration seemingly out of nowhere. The dealership replaced the fuel pump which is what they said was causing the error. Today on August 10th, check engine light popped up again with a DTC error code. Weird acceleration and deceleration and general jerkiness when driving. Scheduled service appointment for next week.

FUEL/PROPULSION SYSTEM

Failed fuel injector caused 3rd cylinder misfire car only has 30,000 miles I'm the second owner I've only had it 2 weeks and this issue happened.

ENGINE

Coming home from work I stopped at a red light and when I tried to accelerate the vehicle was surging and jerking shaking and wouldn't pick up speed 2 min later the check engine light appeared flashing thankfully I was 5 min from home got the car towed the next morning to hyundai dealership said it was an cylinder misfire the car only has 30,000 miles on it

ENGINE

The contact owns a 2023 Hyundai Sonata. The contact stated that while driving 75 MPH, the vehicle briefly lost motive power before downshifting to a lower gear. In addition, the engine revved independently. The contact was able to pull over to the side of the road and turned off the vehicle. The contact was able to restart the vehicle; however, the vehicle failed to exceed 60 MPH. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The failure persisted, and the vehicle was no longer being driven. The contact parked the vehicle at the residence. The contact started the vehicle and the check engine warning light illuminated. The manufacturer was not notified of the failure. The failure mileage was approximately 34,000.

FUEL/PROPULSION SYSTEM

The fuel injectors failed again, leaving me stranded on a busy road. The first time this happened, I had a little over 8,000 miles on my vehicle - 5 months after purchase. That was two years ago. Now, the injectors have failed for the second time and I am having to pay just north of $1,000 to get them replaced at my Hyundai dealership. It was a terrifying thing to experience and my safety was at risk due to my vehicle decelerating on a busy street. I had to call the police to help shield my vehicle from other drivers. The problem has been confirmed by a dealer upon inspection and diagnosis, and the police officer that was at the scene also could see that my vehicle would not start. This dealer works at the company that manufactures Hyundais. Prior to the fuel injection failure, there were brief moments where the 'check engine' light would illuminate but it would never stay on long. Directly before my vehicle shut off on the road due to the failure, there were no light/lamps/or other symptoms noticeable.

ELECTRICAL SYSTEM

Took my car in February 10 for a recall that pop up on the app and today is June 22 and I’m getting all the run around and different dates for my car to be ready but everything it’s time to pick up my vehicle something comes up and they told me they took my car back to the body shop for the recall issue. All the information are added on the file

FUEL/PROPULSION SYSTEM

Took my car in February 10 for a recall that pop up on the app and today is June 22 and I’m getting all the run around and different dates for my car to be ready but everything it’s time to pick up my vehicle something comes up and they told me they took my car back to the body shop for the recall issue. All the information are added on the file

UNKNOWN OR OTHER

On June 4 as son was turning, the car started shaking & went to park. He managed to slip into a nearby parking spot & tried to reverse. The car turned on, put into reverse & then after about 2 seconds it went to park & stopped. This happened several times. It was towed to the dealer who today, June 10, reported it was a transmission flaw. The car was being driven at about 30 mph on a 2 way street. Had it been on the interstate at a higher speed, it may have caused a dangerous situation with a sudden stop.

ENGINE

On June 4 as son was turning, the car started shaking & went to park. He managed to slip into a nearby parking spot & tried to reverse. The car turned on, put into reverse & then after about 2 seconds it went to park & stopped. This happened several times. It was towed to the dealer who today, June 10, reported it was a transmission flaw. The car was being driven at about 30 mph on a 2 way street. Had it been on the interstate at a higher speed, it may have caused a dangerous situation with a sudden stop.

FUEL/PROPULSION SYSTEM

My car stalled while driving through an intersection and nearly caused a T-Bone collision. The car would not start afterwards and towed to dealership. The car currently has 32000k miles on it. The inspection report stated leaking fuel injectors causing misfires. This was covered by warranty. The parts are currently backordered with no eta on possible repair indicating it might be a widespread issue. There were no warnings or lights prior to incident. The car had just been serviced at 30k miles by the dealership with no indication of possible failure given to me by maintenance department. The dealership is out of loan vehicles and I’ve been without a vehicle for 6 days now causing work and personal issues.

POWER TRAIN

Similar to other stories I’ve read online, my 2023 sonata broke down on the highway a minute after any error signal popping up, in a dangerous location on the highway with no shoulder. Plaza Hyundai dealership was first/last and only people to perform an oil change or service the car. They told me they wouldn’t take the car due to being full after the incident. A Different Hyundai dealership took the car and found the breakdown was due to a missing oil drain plug and the engine leaked all the oil, while noting they didn’t do the previous oil change and there was no external damages. Plaza Hyundai is refusing to claim responsibility and just trying to milk me for much money as possible/get me to purchase a new engine.

FUEL/PROPULSION SYSTEM

I have had this car checked out 3 times and on my way to the 4th appointment. I can be in the middle of the road or pulled up in my driveway the RPMs go crazy shuts off every light comes on then clicks and I have to waite and try to restart. This car has been a problem since we bought it brand new even the chrome has come loose on it. Took to 1 dealership they said it's not throwing a code so nothing they can do I pulled out of the dealership onto the busy highway and the rims went crazy lights came on and it died called the mechanic that said nothing was wrong he came out got it running took it back came back said nothing showing up so there was nothing he could do. I'm driving another 3 hours away hoping I make it to another dealership that said they would look at it after I sent pictures and a video to the mechanic. I will NEVER buy another hyundai again and definitely tell anyone I know not to.

ELECTRICAL SYSTEM

I have had this car checked out 3 times and on my way to the 4th appointment. I can be in the middle of the road or pulled up in my driveway the RPMs go crazy shuts off every light comes on then clicks and I have to waite and try to restart. This car has been a problem since we bought it brand new even the chrome has come loose on it. Took to 1 dealership they said it's not throwing a code so nothing they can do I pulled out of the dealership onto the busy highway and the rims went crazy lights came on and it died called the mechanic that said nothing was wrong he came out got it running took it back came back said nothing showing up so there was nothing he could do. I'm driving another 3 hours away hoping I make it to another dealership that said they would look at it after I sent pictures and a video to the mechanic. I will NEVER buy another hyundai again and definitely tell anyone I know not to.

FUEL SYSTEM, GASOLINE

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.

FUEL/PROPULSION SYSTEM

Good afternoon. My issue is related to an existing recall that Hyundai Motor sent to me back during the beginning of January 2025 for a gas valve, tank inspection (replaced if necessary.) and ECU computer update. I've been to a total of 4 Hyundai Dealers and none of them have been consistent with this recall. The first Dealer is "Future Hyundai" in Concord, California. Initially, I'd took my car there for both recall and sound coming from the gas tank and my fuel level dropping. I was told by a service advisor by the name of Hayley, that it would cost a diagnostic fee to locate the issue. I didn't have the fees. But, seeing that the gas tank was part of the equation. It was free. The gas tank inspection was never done. I was told by Hayley that the fuel valve was replaced. But they mechanics only done a quick visual. I wasn't reassured that my issue was resolved. So I'd took it to a another Hyundai Dealer. This dealer told me that part of the procedure is to take off the tank and inspect it. I didn't get that far because I was told that a tool that was used is used to take off the tank was broken. A bleeder tool. Which doesn't make sense, because the tool is used for Bleeding out air from the fuel system. "Allstar Hyundai." The last two of the 4 dealers, "San Leandro Hyundai" and "Freemont Hyundai", told me that my fuel pressure hose in my gas tank and had swelled up. San Leandro dealer told me that my gas tank expanded. But the "Freemont Dealer" only mentioned the fuel hose. But never mentioned the gas tank. But decided to add it anyways. None of these dealers have been consistent regarding the recall. "Freemont Hyundai", the last of the 4, the service man told me that my tank is available. But his story changed from the time that I can get the job done 4 times. To having to have my car for two days before they can order the part. He'd order the parts, verified to me, when I was at my appointment. But now that conversation changed.

POWER TRAIN

2023 Sonata N-Line, complete loss of power while driving on seven (7) occasions over the past year. In all cases above 60mph creating a dangerous condition to myself and fellow drivers while attempting to pull to the side of the road while rapidly losing speed. In all seven (7) cases, the DTC code is P065312. I have asked the dealership to note the recurring issue in my service records and I have reached out to Hyundai, mostly so that if I am involved in a serious accident because of this issue, there is a paper trail for legal purposes. The dealership folks are nice but basically unless the car rolls into the dealership with smoke pouring out of the engine, they want to charge a diagnostics fee and keep the car for multiple days which isn't helpful because like most, I need the car and the issue is extremely sporadic. It is disappointing and I hope Hyundai takes note and provides remedy for the issue sooner rather than later as this is my sixth (6th) Hyundai vehicle and really do like the car otherwise. All incidents below: 01/23/2025 - 9531 miles 01/20/205 - 9128 miles 12/15/2024 - 5500 miles 12/13/2024 - 5374 miles 11/22/2024 - 2409 miles 01/12/2024 - 568 miles 01/08/2024 - 554 miles

ENGINE

2023 Sonata N-Line, complete loss of power while driving on seven (7) occasions over the past year. In all cases above 60mph creating a dangerous condition to myself and fellow drivers while attempting to pull to the side of the road while rapidly losing speed. In all seven (7) cases, the DTC code is P065312. I have asked the dealership to note the recurring issue in my service records and I have reached out to Hyundai, mostly so that if I am involved in a serious accident because of this issue, there is a paper trail for legal purposes. The dealership folks are nice but basically unless the car rolls into the dealership with smoke pouring out of the engine, they want to charge a diagnostics fee and keep the car for multiple days which isn't helpful because like most, I need the car and the issue is extremely sporadic. It is disappointing and I hope Hyundai takes note and provides remedy for the issue sooner rather than later as this is my sixth (6th) Hyundai vehicle and really do like the car otherwise. All incidents below: 01/23/2025 - 9531 miles 01/20/205 - 9128 miles 12/15/2024 - 5500 miles 12/13/2024 - 5374 miles 11/22/2024 - 2409 miles 01/12/2024 - 568 miles 01/08/2024 - 554 miles

FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

I was driving into work on a major road (about 45 mph) when my 2023 Hyundai Sonata stopped accelerating and my engine gave out. Initially I thought I was accidentally pressing on my break pedal but when I realized I wasn’t pressing the break, I had just enough time to turn on my hazards and get out of traffic and onto the shoulder of the road. I was stuck between a main exit and the major road. My battery, oil, and engine lights came on (no service lights had been on prior to this incident) and my car was just very slowly rolling before it automatically engaged my parking break - which makes me fearful of what would have happened if I had still been in busy traffic. I could gotten very badly rear-ended. My car only has just over 5600 miles and I never had any issues with it before and kept up with the general maintenance. I attempted to restart my car to no avail and about 30 minutes later I was able to restart my car but there was a very strong vapor smell in the cabin of my car. I got my car towed to a dealership and was informed one of my fuel injectors was misfiring/gone bad - similar to many other incidents on this site. I asked the dealership if they were able to view the state of my other fuel injectors and was told they were unable to do that, so I am unsure if other fuel injectors will go bad in the future.