Other Fuel System Problems of Hyundai Sonata - part 1

Filled gas tank up on Friday [xxx] about 10am as leaving boca raton, FL to head north to new port richey, FL. About 30 minutes later the gas mileage said there was only 90 miles left in the tank. Stopped at the next gas station to make sure nothing was leaking, added a little more until it clicked, basically full again. Got to approximately [xxx] near morris bridge in tampa area, the car started to decelerate and then all the engine lights came on and car was shutting off, was able to pull to the left side of the road and looked into the back seat noticed the back seat was rising. Looked under the back of the car and the frame looked like it was pushing up into the backend of the car. Dot was called out to the scene as it appeared the car could have exploded. This could have killed my [xxx] daughter (which was who was driving the car) or other people on the road. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

See all problems of the 2023 Hyundai Sonata 🔎.

To whom it may concern, I have own my vehicle since Jan 2018, which was purchased from the dealership's owner w/less than 10k miles. Maintenance has been performed iaw Hyundai's recommended schedule. However, yesterday, I was informed that my vehicle needed a new engine and other replacements totaling $13,934. 89. This is outrageous. How can a well kept vehicle w/106445 miles, need such replacements? thus your assistance will be greatly appreciated.

See all problems of the 2017 Hyundai Sonata 🔎.

While driving car stuttered check engine light and check hybrid system flashed. Check engine lights stayed on until getting home. Next day. I scanned and code p0b68 was set.

In November of 2024, I had a check engine light for a cylinder 2 misfire and a fuel to air mixture ratio. Had it towed to a Hyundai dealership. Got a call the next day saying it was fixed. Picked the car up and 50 miles later it popped back up. Had it towed back again. They said my fuel injector was cracked. They had to order the fuel injector directly from korea. Took 5 days to get the part and it installed. Fast forward to September 2025, cylinder 2 misfire showed up again(same cylinder the fuel injector was replaced) and now the car shakes violently when accelerating and stalled at a stop light. Massive safety concern due to risk of an accident. Car to be towed to another dealership for the same issue less than a year apart.

See all problems of the 2022 Hyundai Sonata 🔎.

Theres a know recall for this issue. Recall 189 and 227 for Hyundai. Fuel leak right by the regulator on the hose. Mine is doing the exact thing. My motor isnt covered for some reason. Same make and model. So id like to make a complaint and make it know the exact same issue is happening still, 2013 Hyundai Sonata and they wont cover it. So if another recall could be opened to help others. I mean its the exact same issue.

See all problems of the 2013 Hyundai Sonata 🔎.

Fuel injector failed. The vehicle stall and accelerate poorly due to misfires. It is leaching gasoline into the oil which can result in total engine failure. Dealership verified the injector was bad. There was a warning light at one time after refueling, presumed it was my fuel cap, tightened it, and the light went away.

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.

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.

My 2017 Hyundai Sonata limited check engine light came on at approximately 103,000 miles of use. This happened last week. The code it was pointing to was a faulty fuel pressure sensor. Could also be combined with faulty fuel pump, but the primary code indicates the sensor. I will be taking it in to the Hyundai dealership shortly. The main reason I’m reporting this is because of my previous experience owning a 2011 Hyundai santa fe that had to have the engine replaced three times all under warranty. There ended up being a class action lawsuit because of several owners experiencing the same proglem. While this may not be the same case, I am leary of engine problems like this. I take very good care of my cars with regular maintenance, so I’m reporting this just in case others are experiencing the same problem.

I had a standard oil change done on my car and it was running fine afterwards. Later that evening, my car started smoking and spontaneously burst into flames from the hood. The fire originated in the hood of the car and melted the entire front of my car as well as the entire inside. It burned a lot of fuel and oil, which leaked onto the ground and continued burning on the ground. My car was overtaken by flames in a matter of a few minutes. It burned so fast that there was nothing I could do to stop it. I was not aware of anything wrong with my engine or fuel lines, or anything like that. However, something was very wrong for the engine area to catch fire like that spontaneously.

See all problems of the 2015 Hyundai Sonata 🔎.

My Hyundai consumes oil and I have to put oil in it every two weeks! also my ignition coils has had to be changed 4 times. Also check engine light just came on code saying catalytic converter or oxygen sensor changed oxygen sensor a couple months ago. I purchased it brand new and as soon as I got over 100,000 miles nothing has been going good since then please help also my paint on the top of the car is starting to peel. Will never buy a Hyundai again.

The plastic fuel pump housing cracked at a spot outside of the fuel tank. When the pump was running, the crack caused the pump to spray fuel outside of the gas tank where the fuel puddled on top of the tank and dripped down over the sides of the tank. During a non-related repair, my mechanic noticed the bottom of the fuel tank was wet with fuel. I'm lucky the plastic fuel pump crack was found before the spilled gas cause my car to catch fire.

The fuel pump filter housing is the cause of the malfunction, it is available for inspection upon request. When I am driving I intermittently lose fuel delivery altogether and my car comes to a halt for a second until I press on the gas pedal to get the car going again, this puts myself and other people in danger if my car randomly stops while I am driving around others and causes crash risk. An independent service center ran a diagnostic and stated it was the fuel pump filter housing. It has not been inspected by the manufacturer, police, or insurance reps. But it has been inspected by the service center near me. An engine code was produced that pointed to the gas cap, but the gas cap was fine, which indicates fuel delivery issues. There was also shaking during acceleration prior to the incident happening. My VIN does not fall under the current extended warranty, but the issues are identical to the issues of the vins that do fall under the extended warranty.

See all problems of the 2018 Hyundai Sonata 🔎.

We were sitting in our car at a hardees drive through when we noticed smoke coming out from under the hood. I pulled forward to a parking space and opened the hood. Flames shot up at least 6 feet. I quickly ran a short distance into the fast food place and right near the door was a fire extinguisher, which I grabbed and put the fire out with. The fire burned for about a total of 2-3 minutes, and did not do excessive damage. Coil packs and wiring harness got most of the damage. With the hood closed, you cannot even tell there was a fire. I had the car towed to grayson Hyundai for the recall part, but then entered a claim to Hyundai. Long story short, they stalled me for over a month and then denied the claim. Citing no damage to the cam. Unlike most of the fires with this carline, my car fire was put out very quickly. The recalled fuel line/tube was not damaged much at all. You could inspect the part and see the wear on it and tell it was the culprit. It didn't take a trained mechanic to see this. After I put the fire out and it cooled, I tried starting it, and there was fuel squirting out from the recalled part. There is absolutely no doubt that the recalled part was the cause of the fire. But Hyundai has given me a denial letter that does not state the reason for denial. The Hyundai rep on the phone told me it had to do with no damage to the cam. I then asked, thats because I got the fire out so fast right? and he said no, didn't have anything to do with it. But he lied. First of all, the cam has nothing to do with the cause of the fire. A damaged cam only happens when the fire was long lasting and severe. They should have inspected the obvious recalled part right in front of them. This denial is completely unprofessional and hints of a concerted effort to categorically deny claims. They don't usually have this much evidence, they did this time and still blew it. Had I let it burn to the ground,=approved.

Purchased 2019 after 44,000 miles engine was replaced metal in engine and inverter coolant issue July 2025 117,000 my inverter coolant light came in and off several times then car through all warning lights hev check engine warning shut it down went into limp mode towed to dealership they checked and cleared codes said it threw 13 codes but after clearing they stated nothing wrong with it as they went to pull car around it happened again this time code was knock sensor which they relaxed at no charge extended warranty they next day after picking up while at idle hev warning went in shut car off and it was gone kept driving nonissues the next day again it happened and this time the engine light stayed on spoke with dealership they said they would charge me diagnosis charge of 208 and if it was related to what they did. It would be covered also stated if the engine light was flashing it would be covered or it isn’t the engine isn’t covered the inverter coolant is not bubbling or moving when car is on it is an inverter coolant issue that was a problem back when my first engine was repaired and should be covered I love my vehicle but I have had so many issues since getting it major things and the lighting system showing a black spot in my view as well that could not be fixed I will attach pictures of earning lights and video of coolant not circulating and the dealership filled the coolant way over the top I have to now take it back again to have it looked at.

See all problems of the 2019 Hyundai Sonata 🔎.

After having work done to repair the head gasket and spark plug. I was on mile ~300 after repairs and was nearing to fill up at a gas station, I started losing power and notice the check engine light was on and gas smell filled the cabin. When I stopped the hood started smoking and there was a fire under the engine cover. My VIN is not listed on the fuel line recalls and I believe this is an oversite as it lists, faulty high pressure hose can rupture and cause engine fires and that is exactly what happen in my case. I believe this VIN was overlooked and I need the repairs complete. I have not completed any repairs because I believe this should have been recalled.

See all problems of the 2014 Hyundai Sonata 🔎.

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.

Whille driving back to washington state my car check engine light came on and the car shut off while I was driving. I had to have it towed to the nearest city whi ch was laramie wyoming. There is no Hyundai dealer had to drive the car once it started back up to cheyenne wyoming it was checked. My on star told me there was a problem dtc p0145100 the status had red triangle the dtc power system powertrain and the dtc sub system ems. I was told and given paperwork by the dealer and was told the car would need major repairs and could take up to 21 days once the work started it would have to he completed there because Hyundai had campaign dealing with my cars problem. I was told I could drive the car home but if the check engine light is flashing pull over immediately. My car is now at the 3rd dealer when I took it to korum in puyallup they did not have anyone to diagnose the vehicle only update onboard computer. They said and documented nothing was wrong with the vehicle which is inaccurate. I told korum about the paperwork from the dealer in cheyenne they did not so much as look at it. I took the car to the dealership in auburn washington they to had the same findings as wyoming also there was additional findings which corresponded with the smell of gas and my tank going empty after filling and trying to fill tank because was showing low fuel warning. Pictures were taken of the gas tank which had expanded as well as other pictures of the findings. I was told in wyoming and auburn that the code and findings are consistent with the Hyundai campaign.

See all problems of the 2020 Hyundai Sonata 🔎.

Is anything being done about the known oil consumption issues with the 2019 Sonatas? my daughter bought the car used -- it currently has 70,000 -- but Hyundai won't do anything because she is the second owner and those cars don't get 100,000 protection, they only get 60,000. It just doesn't seem right.

The fuel tank expanded/swelled up causing frame damage to the vehicle.

It was about 100 degrees outside yesterday, and while trying to pass a car, I look in my rearview mirror and notice there is fuel shooting out from my fill hose under my gas flap. I lost over 3 gallons of fuel on the road. This happened my whole 60 mile trip. This has happened to me before, but the temperature was around 76 degrees and it does not happen in cold weather. I have a feeling my fuel tank is expanding because when I took out my back seat where my fuel tank is located, the body of the car is all buckled up to the point where I can't get my backseat to latch down anymore. My car is available anytime for inspection upon request. I have not taken it to a dealer to get it looked at, there has not been a police report filed. And there were no warning lights or indicators other than a popping sound coming from my backseat area before the problem occurred. There are no warning lights or indicators after the problem either. I feel like I'm driving a bomb because my fuel tank could blow up at any time. This problem can be reproduced anytime by filling the tank and driving it in 90 degree weather.

Car has 39,495 miles. First owner of vehicle. Have advised dealership since 2024 that there was a oil issue as I have only went to them for oil changes. I advised that as they can see the car is barely driven and the oil is disappearing. They claimed nothing was wrong and made me pay for a oil change again. Come this year, I advise again there is a issue, they tried to have me pay for a oil change again and I advised something else needs done. They argued I was not the first owner and the car was not in warranty however I bought the car from their lot and I am the original owner. Then they stated I had to pay for another oil change for the oil consumption. Then they claimed they would just do the oil consumption and then to drive 1,000 miles and bring it back. After the oil consumption engine light is on. I drove 1,000 miles, brought it back and the engine failed the test. The dealership changed the engine. 5 days later engine light is on, car is stalling and brake locked up, then car would not start and was smoking under the hood. Car was then towed to the dealership. They claimed nothing is wrong and they reset the code for the engine light to go away. They stated evap code was on but was not persistent so it's fine. Few days later engine light comes on again and once the car has been running, you shut it off go to start it again it won't start unless you have it sit for a while. I take it back to the dealership they point next to the engine saying a purge valve, but the wants money for a diagnostic. They do the diagnostic and still provide maybes, as they claim the filler neck is rusted and corrosion. I take the car to another place who states the filler neck is fine.

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.

First owner, sporadic acceleration problems reported from approx 6k miles. Documented with dealership. . “couldn’t reproduce” issue every time I brought it in after an occurrence. Dangerous when entering highway, as I never knew when it would fail/stall. Eventually broke down on busy interstate highway, replaced 1 fuel injector, and guilt tripped me into “needing” to have fuel injector cleaning because the others might fail as well. 27k miles was the first breakdown. 38k was the second breakdown and almost caused a serious accident when I was unable to accelerate. Replacing all 4 fuel injectors but not covering the oil change due to their faulty fuel injectors.

I bought this car in June 2013 for its safety and its amazing warranty and all the features that it has Hyundai manufacture had an obligation as a consumer service and failed to send notification of any recalled to us in regards to a recall high pressure, fuel pump, and fuel rail fuel system engine, gas tank this is a product of liability and negligence on time but they failed to take responsibility and comply with federal laws. I was driving with my family in the car when this car was a ticking time bomb not even being aware of the death trap on wheels. We ended having towed our home and then to then had to make a call next day and have it towed to Hyundai service center while we were driving this happen, where we heard two loud pops the gas gauge went down from 200 something to 80 engine lights came right up the backseats were heating up under my son seat in the back stated he felt waves as the backseat was getting hotter, we pulled over to a gas station and that’s when we had to call called o’reillys and then we called a mechanic friend which stated that he ended up looking up the car and stated please pull over and get out car and called the Hyundai manufacture that there was a recall that’s the only way we found out other than that no prior incidents, then called the service technician of Hyundai I called amd complaint with the Honda manufacture corporate. They have failed to take the responsibility for this and they should be ashamed and take their accountability for this we could’ve died and anyone else around us on road as we drive this car daily the car was a higher risk of a ticking time bomb stated by the Hyundai service center technicians. This is an nere to miss accident narrowly avoid catastrophe.

See all problems of the 2021 Hyundai Sonata 🔎.

Something went wrong in the fuel tank that caused it to become so pressurized that the tank expanded up and out so far that it pushed the exhaust pipe down and my back seat of out place. The only issue I had was the car was accelerating slower than usual but it wasn’t even enough of a difference for someone who didn’t drive it every day to be able to tell. It did this for two days then the check engine light came on and it just read “powertrain”. Began slow acceleration on 06. 08. 2025. Check engine light came on the night of 06. 09. 2025. I took it to the dealership 06. 10. 2025. I immediately took it into the dealership and they told me the car could have exploded. There was a previous recall for the fuel pump that I had replaced at the dealership. After seeing my car, they said their techs and the techs at hma have never seen one this bad and that maybe after replacing the recall part the system update failed in my vehicle and the issue was never actually resolved.

Engine light is blinking and put safety of my family in danger. I called the close huyndai dealer also I have a case number. However, it takes forever for them to answer. I only have this car. I am driver and this how I make living. I have no choice in driving this recall vehicle and kill my self and my family. No body care!.

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.

Oil consumption was ridiculously high, changing oil/topping off oil constantly. Car would not accelerate over 30 mph without sputtering and rumbling. I had mechanic diagnose bad sparks plugs due to sitting in oil from leaking. After I had them repaired/replaced the car drove great for 1 day, then decided to die in the middle of a busy intersection while I had my teenage son in the car with me. My son and I had to push it out of the busy intersection onto a side street to get out of the way! I had it towed to Hyundai dealer who said the spark plugs were bad and that the fuel pressure sensor and gdi pump were faulty and needed replacement. Left front lower control arm/ball joint assembly also requires fix. To the tune of $3000 + . It’s been at dealer for past few months until I can afford the repairs including the 2nd diagnostic and tow it took to get it to dealership.

Multiple critical mechanical and safety issues have occurred with my 2018 Hyundai Sonata sport. The vehicle has experienced persistent engine misfire, a severe oil leak, emissions system failure, and extensive paint deterioration. A certified technician confirmed an active oil pan leak with no dashboard warning lights, posing a fire and stalling hazard. To prevent further damage, I replaced the entire oil pan and spark plugs at a personal cost of approximately $800 at firestone complete auto care. The check engine light revealed diagnostic code p0420 – catalyst system efficiency below threshold (bank 1). An o’reilly emissions scan confirmed the catalytic converter failure, and emissions status was marked “red. ” the vehicle will not pass an obd-based emissions test. At 149,219 miles, Hyundai refused warranty coverage due to mileage. A certified Hyundai dealership quoted $3,722 to replace both the catalytic converter and valve cover gasket, which remains unaffordable and unrepaired. In addition, the factory-applied white paint began peeling severely from the hood and roof. Although Hyundai issued a warranty extension for this known defect, the dealership refused to repaint the hood, citing a minor dent — even though the peeling is clearly unrelated. The exposed metal has started to rust, risking structural deterioration. All concerns have been evaluated by certified Hyundai service and independent professionals. These combined mechanical, emissions, and exterior failures raise serious safety and durability concerns. I am filing this report to document manufacturer-related defects that may affect other owners of this model and year.

I had engine issues back in 2021. I had to pay $600 for a part to be installed to fix the problem . The engine failed, the idle was violently lurching forward and would randomly shut down. Recently the car shut down without warning again. Its scary.

See all problems of the 2016 Hyundai Sonata 🔎.

In early may 2025 while driving around 40mph, I heard a very loud pop which startled me. Pulled over and looked back and noticed my backseats were push up out of place. I attempted to put the seat back into place but it wouldn’t fit into the latch anymore. The framing underneath the seats looked pretty damaged so I took it to a local mechanic. After doing some research, he found information for a check valve/fuel tank recall (service campaign 9b1) and then advised me to go a Hyundai dealership. I attempted to take it to the dealership, whom sent me away after I advised them of what happened. I came back the next day asking them to take a look at while informing them about the recall that could be related. Later that evening, they called and said the issue was directly related to the recall and the repairs would be covered. My car was in their possession for from 5. 12. 25 to 7. 25. 25 without any updates or instructions on what is happening. I was told they’re waiting to hear back from Hyundai manufacturer on how to proceed. They returned my car to me on 7. 25. 25 stating everything was repaired. On 7. 31. 25 they called me back stating my tank needs to be replaced and bring the car back ASAP. My car was again being repaired and was returned to me on 8. 25. 25. Now my vehicle will not start randomly sometimes. At this point, I’m under the impression my vehicle is no longer safe as all the issues I’ve been facing are fuel related.

Burns oil fast. 900 miles from an oil change the car oil stick was empty. There are no signs of oil leaking. Every 1000 miles you have to place oil back into it. I’m not the only one complains of this issue. I was reading on reddit and it’s thousands of people having the same issue.

Unknown, caught fire. ??.

Fuel lines and connections / fuel tank band / fuel tank vapor vent system hoses [xxx]: my check engine light illuminated. I immediately returned to Hyundai riverdale. They advised me it could be the fuel tank and stated they needed to keep the car for 5-7 business days. May 1, 2025: I dropped off my car for inspection, having made arrangements for a personal rental car. May 7, 2025: I received a text message (no phone call) indicating the inspection was complete and was presented with a $3500 bill to replace the entire fuel tank. May 9 or 12, 2025: marilyn from Hyundai riverdale called me regarding my vehicle. She explicitly suggested I "contact your insurance company, advise them you hit something on the road, pay the deductible, and they will pay for the repairs. " she then stated, "I know you hit something after April 9th because your fuel tank is now damaged. " I denied hitting anything. During this call, she mentioned a "recall" related to fuel tanks on all Hyundai Sonatas, which I was never previously made aware of. I questioned why I was being charged if there was a recall for the exact issue I was experiencing. She claimed my car was previously checked and the fuel tank was fine, therefore the cost fell to me. May 14, 2025: merilyn called to inquire if my insurance would cover the repairs. I informed her I was picking up my vehicle as another Hyundai dealership in newnan was willing to perform the recall repairs for free. Upon arrival at riverdale, I faced resistance but demanded my car be released. I was then charged a $200 inspection fee, which I refused to pay. Marilyn then provided my keys and, upon learning I planned to drive to newnan, stated, "I wouldn't feel right letting you drive this car off the lot and something happening to you. Your vehicle at any moment can blow up due to the fuel tank. It's very dangerous to drive and suggest you get a tow truck. " April 11-may 1st I drove that vehicle w/no idea it had the potential to blow up. Information redacted pursuant to the freedom of informati.