2023 Hyundai Sonata Fuel System Problems

Your 2023 Sonata has experienced serious fuel system problems related to Recall 25V-796, including loud popping noises, inability to refuel at some stations, rapid fuel leaks while driving, and an inaccurate fuel gauge that jumps between readings. The vehicle has been at the dealership since December 6th without a fix, leaving you without transportation despite making monthly payments. The dealership and Hyundai have not yet resolved the issue.

While driving on the highway at 70 mph, your check engine light came on and your engine suddenly began shaking violently, losing power, and running very rough. The accelerator barely responded, making it dangerous to control the vehicle in heavy traffic. You also noticed a strong smell of gasoline and burning odor inside the cabin. The engine wouldn't restart after you shut it off, and the dealer found that all four fuel injectors were faulty and needed replacement.

Your car's fuel injectors are failing, causing sudden power loss while driving in traffic and on highways—a serious safety hazard. This has happened twice, requiring fuel injector replacement both times (first at 12,000 miles in December 2024). The fix involves replacing the fuel injectors at a dealership to restore proper engine power delivery.

Your 2023 Hyundai Sonata may have trouble starting after you press the START/STOP button, and you might see smoke coming from the exhaust pipe. The dashboard displayed a message (details not specified), but no warning light turned on. The dealer replaced the fuel injector, but the problem continued and wasn't fully repaired. This issue may be related to a known fuel system recall, though your vehicle's VIN wasn't included in that recall.

Your car's fuel economy display suddenly jumped from 320 to 431 miles, and you received a diagnostic warning about the EVAP sensor. The dealer found that the EVAP system valve was stuck open, which caused your fuel tank to swell. The swelling also triggered a false warning light from your rear seat sensor. The fix involved replacing both the EVAP system valve and the fuel tank.

Your 2023 Hyundai Sonata is subject to a fuel system recall (Campaign 25V796000), but the manufacturer hasn't made the repair parts available yet despite what you feel is a reasonable amount of time. You haven't experienced any actual fuel system failure, but the dealer hasn't been able to schedule the recall repair because the parts aren't in stock. The fix will likely involve replacing fuel system components once the manufacturer releases the necessary parts.

Your check engine light has been coming on repeatedly while driving. The dealer has reset it several times and kept your car for 32 days, but the problem keeps returning. Your car is affected by a fuel system recall, but the replacement parts aren't available yet, so the dealer hasn't been able to complete the repair.

While driving at highway speed, my vehicle suddenly lost power due to fuel injector failure and could not be restarted, creating a serious safety risk for myself and others in high-speed traffic. This is the second vehicle of the same year and model that I’ve owned to experience the exact same injector failure. In the first case, one injector was replaced under a Hyundai service bulletin before I sold the vehicle. This second occurrence confirms that the issue is not isolated and should be escalated to a formal safety recall. The most recent failure was diagnosed and repaired by Hyundai, confirming the problem (this time replacing all injectors). The vehicle has not been inspected by police, insurance, or other outside representatives. There were no warning lamps, messages, or symptoms prior to the failure—it occurred without any warning, significantly increasing the risk of a crash

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.

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.

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.

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.

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.

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.

I bought the new car on 11/21/22. There have been two incidents with the same cause. Incident #1: On 1/25/23, while I was on a six lane highway with high speed traffic and rush hour level traffic, the car began to fail, with 'bucking', failure to respond to the gas pedal, loss of power, and difficulty steering. At that time, the check engine light also went on (it had not been on previous to the event starting). I was able to get the car off the highway, where it completely died - it would not move. It was towed. Mileage at this time was 1,330 miles - the car was 2 months old. It was diagnosed that "Cylinder #3 fuel injector is stuck open causing drivability issue". The likelihood that I would have been hit, by another car on that multi-lane highway with cars at high speed, and hurt or even killed is extremely high, if not certain. I did not file a report with NHTSA about the first incident (I was not aware of this service.) Incident #2: On 12/7/24, while I was again on a six lane highway, high speed traffic, night darkness, rain, and rush hour level traffic, the car began to fail in the exact same way as in 2023, 'bucking', failure to respond to gas pedal, slowing, difficulty steering, etc. I was able to get off the highway before it completely 'died'. It was undriveable and had to be towed. There was no warning light prior to the event occurring. Mileage at the time was 21,091. The probability, considering the rain, the dark, and the fact that I was on a 'super highway', that I could have been hit, hurt or even killed is extremely high. The diagnosis was 'TSB indicated #3 Fuel Injector be replaced." I do not have any of the old fuel injectors. In addition, I routinely - multiple times a week - have small children in this car. These events could have happened when I had a carful of small children with me. My routine schedule means there was also the high probability of others being hurt.

Fuel injection systems failed At 5000 miles cell 2 At 15000 miles cell 3 Under warranty but although tech said other two would fail prematurely Hyundai would not replace cell one and 4 As these failures happen suddenly without warning while driving I feel this is a serious safety hazard

While driving on the country side, my car engine stopped providing power to the car and started making some noise. The engine rpm would fluctuate and increase due to downshifting but there was no power. Luckily, the car had some speed around 50 mph, the road was slightly downhill and nobody was behind, managed to coast to a gas station half a mile away. The engine shut itself off after the car stopped. I was able to restart the car but it would shut itself off within 2 seconds of restart. Car was towed to the dealership and I was told that it had a faulty injector. The injector was replaced a week later and I received my car back later.

On 3 separate occasions the vehicle decelerated, lights flickered and stated to produce a burning smell through the engine. Each time the car would not allow me to accelerate and eventually stalled out. The car would no immediately start. After a few minutes it would start but not accelerate. After about 30 minutes it would start and would drive about 5-15 mph, enough to get me to my location. On the first occasion I was coming home late in the evening after working a 12 hour shift and had to have a family member get me after being stranded by the side of the road. The second time I was taking my 4 to son to his planned surgery in a bigger city and it broke down on the way. It was not safe driving in the city barely being able to excel but we did it for my son. The third time I was in a larger time in traffic and missed an appointment as I tried to stear my decelerating vehicle out of multiple lanes of traffic to a safe location. I could not use the air conditioner while I attempted to let it rest in 100°+ heat. Each time the lights would flicker and dim. There would be a smoke from the exhaust. After the first 2 occurrences we took it to the dealership but they were not able to replicate the problem or identify a causative code. During the last occurrence we were able to get it to the dealership very slowly and they deemed it to be the fuel injector malfunctioning. This was fixed after about a week or so of being in the shop . About a week or two after the fuel injector was fixed the check engine light came on. We took it back into the service department and they "reset" the system thinking it was an error. The light came back on in less than 24 hours. The vehicle has been running a little harder, not as fast or responsive as normal. A service/evaluation date was scheduled and the code was checked indicating it was likely the catalytic converter. We scheduled another service appointment once the part was in which is 2 weeks from the evaluation appointment.

Had been traveling for approximately 2.5 hours in a winter storm, pushed on brake to slow down and park and the car started to chug. Turned car off and then back on again. Car would not start and had to be towed to nearest Hyundai dealership. There were no warning signs at all, car just suddenly quit. We were later informed that it was the fuel injectors. We were very fortunate that this did not occur in a place with no cell service on a very frigid, stormy night.

I was traveling on the freeway when I began experiencing erratic acceleration, around which time the check engine light came on. I took the next exit, and continued to experience the same symptoms, as well as rough idling, and a bit of smoke. The car was towed to the nearest Hyundai dealership where the fuel injector was replaced under warranty.

Took a trip to the grocery store, and started up my car when I got back. The engine turned over but after a few seconds, it stalled. Tried this again, but lightly pressed the accelerator. This raised the RPM, but it dropped quickly and stalled the engine again. Made a couple more attempts after and eventually, the engine light came on. Shortly before this incident, I had about 10-15% of gas left in my tank. After this happened, bluelink reported that I had 1% left. Got the vehicle towed to the dealership, where they confirmed the condition and found that the fuel injector for cylinder 3 needed to be replaced. I consider myself lucky that this happened while my vehicle was parked. This would've been a huge safety concern if it happened out on the road.

This is the second incident with the same issue. Both times the car starts to shutter and when you give it gas it doesn't do anything and then it just dies. No steering no brakes nothing. You may or may not be able to restart the car to move it if it breaks down when it's in traffic, luckily we were able to get it fired up long enough to move it off the road.

I want to say through this message exactly a month ago that I bought my Hyundai sonata sel 2023 and today driving the car it completely lost power when accelerating so I had to stop immediately I put my turn signals after that I turned off the car! I opened the hood and I didn't see any smoke coming out until that part, everything was fine. Then when I tried to start the car, it made a strange noise and a strong smell of gasoline began to come out! try several times and the same result that the car does not start the engine makes strange noise and the smell of gasoline is very strong that I had to get out of the car and leave it off, at the time I write this message I am still waiting for assistance!

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.