There are 48 owner-reported fuel system complaints for the 2012 Hyundai Sonatain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2012 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the contact became aware of smoke coming from the engine compartment. There was no warning light illuminated. The contact stated that there was an abnormal gasoline odor coming from the vehicle. The vehicle was taken to the dealer where it was determined that the fuel pump control module had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 126,561.
On July 8th 2024 I was driving my already troubled 2012 Hyundai Sonata when I started to smell strong odor of unburnt gasoline which immediately had my red flags go up, I safely pulled off the roadway and opened the hood and the fumes got stronger and stronger, I removed the plastic top engine cover to discover the foam on the underside of the plastic cover was sopping wet with gasoline, and witnessed what appears to be some sort of line or horse carrying fuel to the high pressure fuel pump squirting out gasoline right on to the hot manifold which immediately panicked me and i put tue plastic engine cover back over the top of the squirting fuel line. It comes directly off of the front of the fuel pump with a quick connect plastic hose that seems to have become brittle from the constant heat cool cycles of the engine compartment. I immediately unplugged the car battery negative and was able to gather some disposable towels I had handy in the trunk and was able to place them atop the squirting fuel line and below it as well. But the entire area that houses the spark plugs was full of gasoline and far too much fuel for me to mop up with the towels I had on hand. This is very concerning to me that a plastic hose and connector would be used in such a scenario seeing as how common sense would tell you that over time plastic will become brittle especially with a heating cooling cycle, and I find it even more disturbing that upon contacting the dealership that I was informed that my vehicle was not included in the said faulty fuel line which has led to dangerous thermal events ending in complete loss of vehicle and potential for life loss. So in addition to the now faulty replacement engine that is in my vehicle, along with the non functioning turbo system, and the melted tail light housings, I now have to pay out of pocket to correct a mistake of Hyundai, I have lost total faith in the brand and in my particular vehicle. I do not feel safe driving it and it will sit
The contact owns a 2012 Hyundai Sonata. The contact stated while driving 60 MPH, the vehicle stalled with the key symbol warning light displayed. The contact pulled over to the side of the highway and was able to use a trailer to tow the vehicle to the residence. Neither the dealer nor the manufacturer was notified of the failure. Upon investigation, the contact discovered NHTSA Campaign Number: 18V934000 (Engine, Fuel System, Gasoline) which she linked to the failure. The vehicle was not repaired. The failure mileage was approximately 180,000.
There was a complaint on your site that is exactly what happened to my car. While driving with foot on accelerator, acceleration/ current speed will randomly just stop. 1-1- Once i fully release the accelerator and then reengage the accelerator problem goes away. This is very random as to when it happens, and will happen multiple times in a row some times... and other times happens once and doesn't the rest of the trip. Safety is put at risk. There's only 38,000 miles on this vehicle. My mechanic can't find it because it's not doing it. The engine light doesn't come on and neither does a code. It does this on a freeway and the streets. This is extremely scary and dangerous.
When decelerating, the vehicle will have a hard down shift or it feels like it accelerates with your foot on the brake after a hard downshift. Once you have come to a complete stop and you accelerate into traffic, it bogs down and does not move forward. It is dangerous to merge into traffic on a city street or in the highway. Our mechanic and the dealer cannot find anything. It is not predictable but it is dangerous to drive.
I purchased the car 9/1/21. 4 months ago I repaired an issue with the fuel pump and fuel rail. Now it's doing the same thing. Code P0087. I looked up to see if there were any recalls and there aren't any OPEN recalls; however the recall #180 is the issue I am having with my car. Would this be covered under the #180 recall?
Vehicle caught on Fire.
The VIN number for this car is [XXX]. "Check engine" light was on and the car could not pass the inspection. We took the car to the mechanics and they found out " leak from fuel pump module" (please refer to the mechanics report for details) . Due to the safety concern, we have to fix it right away out of our own pocket. This particular VIN number is not included in the MHTSA ID: 18V934000. We are requesting this VIN number to be added in the recall ID 18V934000. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). UPDATE-06/01/2023- Consumer is checking status of VOQ.
I started the car and immediately got a chiming sound with an error message "hybrid system warning! Safety stop and do not drive" brake light also came on. I put the in drive and Car would not accelerate past 15 mph and the brakes did not engage. I turned the car off and the message reset. Same issue occured about a month ago but the dealership could not replicate the problem.
The car hesitates when excelerating. The car has had this problem since I purchased the vehicle. I have reported to the Hyuandai dealership within in a few days of purchasing it. They told me it was normal. It has been in and out of the dealership many times and they finally told me ithey installed the knock sensor device which helped for a short time but it’s gotten worse. It hesitates so bad at times I almost got struck from the side because my car got stuck in the middle of the road because it wouldn’t go.
TL* THE CONTACT OWNS A 2012 HYUNDAI SONATA. THE CONTACT STATED THAT THE VEHICLE WAS EMITTING A FUEL ODOR. THE CONTACT TOOK THE VEHICLE TO PATRICK HYUNDAI (1020 E. GOLF RD, SCHAUMBURG, IL 60173, (847)230-8294) WHO STATED THAT THE VEHICLE WAS LEAKING FUEL FROM THE ENGINE COMPARTMENT. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 115,000.
AS I WAS PULLING OUT INTO TRAFFIC, THE THROTTLE WENT UNRESPONSIVE. I PUMPED THE ACCELERATOR THREE OR FOUR TIMES AND THE VEHICLE LURCHED FORWARD THEN BEGIN DRIVING NORMALLY. THERE WAS NO "CHECK ENGINE " OR OTHER WARNING. I TOOK THE CAR INTO THE DEALER AND THEY HOOKED IT TO A OBD AND DROVE IT, TO NO AVAIL. HAS THEREIN A ANY REPORT OF THIS PROBLEM BY OTHER OWENERS???
The contact owns a 2012 Hyundai Sonata. The contact stated that after fully refilling the gas tank at the gas station, and driving at 40-55 MPH, he smelled a strong gasoline odor inside the vehicle. There were no warning lights illuminated. The contact was able to continue to drive the vehicle. Upon investigating the failure, the contact noticed that each time he fully refilled the gas tank, in addition to the smell, the vehicle would shudder for 3-5 min while driving. Additionally, the contact noticed that gas was leaking onto the driver's side rear wheel well whenever the gas tank was fully refilled. The check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with evap failure. The dealer informed the contact to check his gas cap; however, the contact stated that the fuel cap was new and was a manufacturer-approved gas cap. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that they could not assist as the VIN was not included in NHTSA Campaign Number: 20V121000 (Fuel System, Gasoline). The failure mileage was approximately 94,750.
FUEL IS LEAKING FROM VEHICLES FUEL RAIL ON LINE GOING TO INJECTORS.UNSAFE TO DRIVE.
THIS WEEK MY VEHICLE EXPERIENCED A FUEL LINE CRACK WHERE THE LOW PRESSURE FUEL PUMP CONNECTS TO THE DIRECT INJECTION FUEL PUMP. THE SMELL OF GAS WAS EVIDENT WITHIN THE CABIN WHILE BOTH STATIONARY AND IN MOTION, AND I COULD SEE VAPOR RISING FROM THE PROXIMAL PORTION OF THE HOOD WHILE SITTING IN THE DRIVER'S SEAT. THE GAS LEAK COULD BE VISUALIZED UPON STARTING THE CAR. UPON OPENING THE HOOD, I NOTED THE GAS LEAK AROUND THE CRACKED PLASTIC CONNECTION. THE FUEL LINE WAS THE ORIGINAL GENUINE HYUNDAI PART. THE HYUNDAI DEALERSHIP REPLACED IT WITH A SUPERIOR (NON-PLASTIC) FUEL LINE. THE LACK OF QUALITY IN THE ORIGINAL FUEL LINE IS CONCERNING BECAUSE IT PLACED MY FAMILY DIRECTLY AT RISK TO EXPERIENCE A DANGEROUS AND POSSIBLY FATAL FIRE. IT APPEARS THAT THE HYUNDAI DEALERSHIP WAS ALSO AWARE OF THIS PROBLEM WITH THE ORIGINAL LINE WHICH IS WHY THEY REPLACED IT WITH A DIFFERENT PART. HOWEVER, THERE IS NO CURRENT RECALL CAMPAIGN FOR THIS UNSAFE SCENARIO. *TR
TL* THE CONTACT OWNS A 2012 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE LOSS MOTIVE POWER WITHOUT WARNING. THE CONTACT ALSO STATED THAT THE VEHICLE STALLED AT VARIOUS SPEEDS WITH THE ACCELERATOR PEDAL DEPRESSED WITHOUT WARNING. THE VEHICLE RESTARTED AFTER EACH FAILURE. THE CONTACT LINKED THE FAILURE TO NHTSA CAMPAIGN NUMBER: 18V934000 (ENGINE, FUEL SYSTEM, GASOLINE). THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 150,000.
VEHICLE GAVE A WARNING THAT THE HYBRID SYSTEM FAILED AND TO SAFELY LEAVE THE ROAD AND STOP DRIVING. THERE WAS NO SHOULDER AND BEFORE I COULD LEAVE THE ROADWAY, THE VEHICLE LOST ALL POWER. NOT EVEN ENOUGH POWER FOR HAZARD LIGHTS.
TL* THE CONTACT OWNS A 2012 HYUNDAI SONATA. THE CONTACT STATED THAT AFTER THE VEHICLE WAS REFUELED AND RESTARTED, THE VEHICLE STALLED WITHOUT WARNING. THE CONTACT STATED THAT THERE WAS AN ABNORMAL FUEL ODOR INSIDE AND OUTSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO CAPITAL HYUNDAI OF GREENSBORO (801 E BESSEMER AVE, GREENSBORO, NC 27405), WHERE THE CONTACT WAS INFORMED THAT THE FUEL SYSTEM NEEDED TO BE FLUSHED AND SERVICED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 96,000.*DT*JB
I HAD TAKEN THE VEHICLE TO THE DEALERSHIP FOR A CLOCK SPRING RECALL. I PICKED THE VEHICLE UP AND THE CHECK ENGINE LIGHT WAS ON. I TOOK THE VEHICLE BACK TO THE DEALERSHIP AND THEY INFORMED BY THE CHECK ENGINE LIGHT WAS CAUSED BY THE HIGH PRESSURE FUEL PUMP FAILURE. THIS SEEMS TO BE A KNOW PROBLEM WITH THIS MAKE/MODEL/YR VEHICLE.
TL* THE CONTACT OWNS A 2012 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT STATED THAT THERE WAS AN ABNORMAL ODOR COMING FROM THE VEHICLE. THE VEHICLE WAS TAKEN TO THE GURLEY LEEP SUBARU (5302 GRAPE RD, MISHAWAKA, IN 46545) WHERE IT WAS DIAGNOSED AND IT WAS DETERMINED THAT THE FUEL LINE WAS LEAKING AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 18V934000 (ENGINE, FUEL SYSTEM, GASOLINE) AS A POSSIBLE SOLUTION TO THE FAILURE HOWEVER, THE VIN WAS NOT INCLUDED. THE MANUFACTURER WAS MADE AWARE OF FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 170,000.
Showing 1–20 of 48 complaints
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026