Our 2015 Sonata has experiencing Engine failure several times due to excessive and irregular oil consumption. Our family’s safety and the safety of others on the roadway were put at risk as the engine slows, shudders and stalls without prior warning and the check engine light does not come on until the vehicle slows and stalls. The vehicle was inspected at a local Hyundai dealership, and they indicated that this is not covered under warranty. Summary of Engine Issues and Failures: 1.May 3, 2022 – 68,671 miles (local Hyundai dealer) Check engine light on, shudder; oil change performed. No cause identified. Paid out-of-pocket. 2.August 23, 2022 – 75,527 miles (retail shop) Car engines failed on highway, towed to service shop. Valve cover gaskets replaced. Paid out-of-pocket in part and extended warranty paid part of the invoice. 3.April 29, 2024 – 109,229 miles (local Hyundai dealer) Excessive oil consumption noted; valve cover gasket replaced again. Paid out-of-pocket. 4.January 22, 2025 – 118,341 miles (local Hyundai dealer) Vehicle stalled en route to airport, towed to dealership; dealership advised oil change. Paid out-of-pocket. 5.May 20, 2025 – 122,000 miles (local Hyundai dealer) Engine codes P0300, P0302, P0303 identified. Dealer diagnosed excessive oil consumption likely due to ring wear or sticking rings, contributing to spark plug misfires. Recommendation: Engine replacement. Despite consistent and timely service, including multiple visits to the Hyundai dealership, the root issue has not been properly addressed. The current diagnosis of internal engine failure is a clear continuation of a pattern of unresolved engine problems (stalling in motion, oil leaks and oil consumption) all of which originated well within Hyundai’s original warranty. The vehicle has been well maintained, and all recalls have been addressed in a timely manner. Hyundai’s failure to acknowledge and take responsibility for this widely documented engine issue is a safety concern.
2015 Hyundai Sonata engine complaints
Page 5 of 23: complaints 101 to 130 of 651, newest first, as owners wrote them.
The car has had an electrical issue ever since taking to to get a recall around may of 2023. It will randomly brake and shift the transmission badly while downshifting. I feel as if my make and model falls under the theta II campaign they had to replace certain engines for having a knocking rod be fault and release shaving into the engine causing it to misfire. Not only that but the electrical issue is completely random it happens atleast once or twice a week. It had began ever since I took it for a recall, and when I took it back they found no issue and left food in the back of my car and the chairs leaned back. This was the Fontana Hyundai dealership
The contact owned a 2015 Hyundai Sonata. The contact stated that after the daughter reached the destination and parked the vehicle, a popping noise suddenly occurred from the engine compartment. After exiting the vehicle, flames were present coming from under the engine hood. The fire department was called to the scene and extinguished the flames. The vehicle was later towed to an impound lot. During the incident, the vehicle was destroyed. The cause of the failure was not determined. No injuries were reported. The local dealer was notified of the failure. The manufacturer was not contacted. The contact indicated that the engine had been previously replaced as part of a recall repair. The failure mileage was 155,000.
Multifunction box is in the steering column that controls your lights, signals, I put my turn signal on right or left at night and my lights go out,but they come back on.also I have zero warning lights on my dashboard for when something happens it let's you know,well I have none. Hyundai of California says it's not unsafe.it should be a recall because it's a thousand dollars for update..
I've been in communication with Hyundai Henderson, Nevada and Hyundai Corporate as result of engine problems with my 2015 Hyundai Sonata. Corporate instructed Hyundai Henderson to submit a "Goodwill Warranty Repair order. However Hyundai Henderson, who has already determined that the vehicle has total engine failure, is requiring that I complete the thousand mile oil consumption test. My car has already proven to be unable to drive a couple hundred miles before losing acceleration. This is a huge safety issue to ask a consumer to drive this vehicle or to put this vehicle on the road as it is. Please advise on how I may move forward with Hyundai Henderson and Hyundai Corporate. * I have my entire battery/oil/repair/tire history - will scan and submit if needed/ upon request - unable to attach here. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I was driving down the road the engine started making a loud knocking noise and as I pulled over it lost power and shut down it would not crank back up I had to have it towed to my house. There was no warning sign.
The car just stopped while driving.
The contact owns a 2015 Hyundai Sonata. The contact stated that while operating the vehicle, the check engine warning light illuminated, and the vehicle was shaking and vibrating abnormally. Additionally, the vehicle failed to accelerate above 40 MPH. The cause of the failure was not yet determined, and the vehicle was not yet repaired. The manufacturer and local dealer were not yet notified of the failure. The failure mileage was 136,000.
As we were driving on the highway at 65 mph, the car completely cut off. Fortunately, we were able to immediately steer it off the road to avoid an accident. We had it towed and the mechanic at the auto repair shop said the engine was completely shot. He advised us to have it towed to a Hyundai dealership because he had seen this same situation with other Hyundais with limited mileage and said there may be a safety recall or a class action lawsuit. My car has 60,000 miles and is well maintained.
I was driving and when turning into a parking lot, I accelerated and the vehicle stalled. It did not go suddenly when accelerating. A couple days later, I use a code reader and have a code listed as P1326. So I take it for a diagnostic at a local shop and I am told it is the Knock Sensor Detection System (KSDS). I was advised to take it to a Hyundai dealer because often these vehicles have manufacture warranty since there’s recalls. There have been some vehicles under this recall Hyundai put out as Service Campaign 966 or 982. They have had vehicles deal with this sensor issue before. Hence why there is a campaign issued. I review to see if there are any recalls on my vehicle and tare none but there are other models listed for this particular issue for Hyundai vehicles. My vehicle was driving fine and it’s fairly new. Low miles then suddenly this happened without warning. I believe it is a recall issue for this model as well.
The contact owns a 2015 Hyundai Sonata. The contact stated that while driving at approximately 30 MPH, the vehicle lost motive power. The contact depressed the accelerator pedal; however, the vehicle failed to respond as needed. The contact stated that the vehicle stalled, and there were several unknown warning lights illuminated. The contact stated that prior to the engine failure, engine oil needed to be added every week. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the engine had seized and needed to be replaced. The dealer informed the contact that the vehicle was not eligible for an engine replacement because an engine software update had not been performed. The vehicle was not repaired. The manufacturer was informed of the failure and confirmed that the engine could not be replaced before the software update had not been performed. The failure mileage was approximately 122,000.
Hyundai is denying a lifetime warranty claim on my 2015 Hyundai Sonata. Recalls have been completed on my vehicle and even with knock sensor recall completed my engine light is not on and they will not grant me a new engine. If though the Hyundai Dealer agrees that the engine has the bearing issue that would grant me a new engine.
The contact owns a 2015 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. There was no warning light illuminated. The vehicle was towed to an independent mechanic where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 92,000.
2015 Hyundai Sonata - original owners. Started burning and engine light came on at 124,000 miles. Took it to dealer to be diagnosed and have oil changed. They called said engine oil was sludged up, they would not even change the oil, and said it needed the engine replaced $9500. We contacted corporate Hyundai who said there was an extended warranty on the engine if the failure was related to connecting rod bearing wear. We were assigned a case and the rep contacted the dealer who said our vehicle didn’t qualify. In doing research we’ve read that this damage cannot be determined without dropping the oil pan. We questioned the rep about this and was told we didn’t qualify because of the maintenance on the vehicle.
On February 15, I was on my way heading back home driving in the freeway went my car randomly started jerking. I pull over to the side on the road pop the engine, did a visible check and i didn’t see anything. I went back on the road and it happened again, this time my check engine light came on and the car car started to knock very bad since then. I did a diagnostic scan and a code, P1326 came up saying that something is wrong with my knock sensor. Went and took it to a mechanic and I was told that my engine is gone and I need to replace it. Also that Hyundai has been having issues of the engine for a while.
Hello. I'd like to report an engine oil consumption problem. I owe Hyundai sonata 2015, 9 years and 5 months. I have been having engine oil consumption problem over 2 years. It was not that serious around 2023 and 2024, also I know this car has oil consumption problem, so I checked engine oil frequently and refilled it when level went down below the "L" level. Last week, I had an engine alarm whish was powertrain system problem " P2096". So I brought my car to Jeff's garage(180milles from my home) and fixed this problem. When I checked the amount of oil before I drove, level of oil was a little above "L" level. But, when the technician checked the car, they found that engine oil left 1 quart only. (I refilled the oil 4 times already for last 4 month, I drove around 2300 miles for last 4 month) They also showed me the stick without any engine oil. They changed new oil and made sure the level on the stick was above "F" level. However, after I drove around 180 miles, I found the level was between F and L. There is no oil leaking but oil consumption is getting worse. I think some of oil consumption is normal or expected, but this is too much. Please check the safety of this engine.
In 8-2021 the original engine locked up due to a crankshaft bearing lock up. The dealer replaced the entire engine with a rebuilt. It locked up within 10 seconds after I drove from the dealer due to a massive external oil leak from the engine front area. The dealer could not determine where the leak was coming from and prepared a report to reflect this. The dealer then replaced this first replaced engine with another rebuilt engine. I drove it and within 5 minutes of driving the radiator plastic side tank exploded open and lost coolant. The engine then misfired and began to smoke out the tailpipe. and engine areas. The dealer demanded I pay $1,100 for a replacement radiator and then they would confirm that the head gasket was leaking from the combustion chamber into the cooling system that exploded the radiator side tank due to overpressurization from exhaust gas. Another dealer saw that the combustion gas had a large leak that was coming out of the broken radiator plastic side tank and advised repalcing the engine with another engine and radiator. The engine locked up while driving it as a result of overheating and/or coolant inside the cylinder that has the head gasket leak. The dealer and factory refuses to repair the engine that is still under two different kinds of warranties. The warranties expire on 10-12-2025
For about a month now the power steering was going in and out and then just the other day, the power steering went completely out, I am now having it towed to the dealership today 02/11/2025. I've also had oil consumption problems to the point where there is only 1 quart of oil left in the engine when getting the oil changed, had the combustion cleaning done and no help. Hyundai said no to a new engine, car only has 102,000 miles on it, only 10 years old and Hyundai hasn't helped a bit, said that I would have to come out of pocket but I ended up having to spend $600 on the cleaning, which is absurd.
The contact owns a 2015 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle backfired and sputtered. Additionally, the vehicle failed to accelerate as needed while depressing the accelerator pedal. The contact stated that the vehicle failed to exceed 20 MPH while driving uphill. Additionally, the contact noticed the presence of strong fumes inside the cabin, which caused her clothes and hair to smell like fumes. Additionally, the contact noticed that oil was spattering from the exhaust pipes and there was oil leaking onto the tires, causing the tires to leave oil marks on the ground while driving. The vehicle was taken to the dealer, where an oil consumption test was performed, and the dealer confirmed that the vehicle was experiencing excessive oil consumption. The dealer informed the contact that the combustion chamber to be cleaned out and provided an estimate. Additionally, the dealer informed the contact that after the combustion chamber had been cleaned, a claim would be sent to the manufacturer for the engine replacement to be covered under goodwill assistance; however, there was no guarantee. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 77,000.
Wednesday evening [XXX] I was driving on a rural Hwy entering onto another Hwy at a one way stop sign. This stop sign was on a blind hill with a partial obstructed view from the right and left. As I pulled out onto the road to go north onto a two lane Hwy towards my home, a truck pulling a trailer came into view from the left. To me the distance looked very close, so I accelerated to avoid a possible collision. Less than a mile down the hill my vehicle lost all forward movement. I costed to a safe stop on the side of this 2 lane Hwy. No warning lights or engine check lights were on the dash just typical signs of some sort of engine failure. The electrical system was fine. Everything else was working as it should. I had no idea I didn’t have forward acceleration until I stepped on the gas at the bottom of the hill. I costed to a safe location on the side of the road. At this point I tried to put the engine in Park from Drive. It would not go into Park. I turned the ignition off and removed the shift release button after which moved the gears to park. I attempted to restart the engine but it would not roll over. I had it towed by AAA from that point to my Hyundai dealership in Cornelius NC. They diagnosed the problem on Tuesday afternoon. The engine had seized up. I am just now learning that this is a class action suit on this particular engine. Very grateful that I was not on Hwy 77 in the fast lane or the express lane. That could possibly have escalated the failure to a deadly failure without warning and no where to pull over at higher speeds. No one should Have to die to make corporations responsible for the safety of their customers. This is our sixth or seventh Hyundai in our family. My Sonata was well maintained. This should not have happened. Will you please look at this issue for the consumers with the same car? I am still without a car or a loaner/rental and am getting ready to go back on assignment.
Location: [XXX] Description of Incident: On a rainy morning, while driving to work, I encountered a sudden lane cut-off by a speeding truck as I exited a school zone. I applied the brakes to avoid a forward collision, but the brake system failed entirely. This resulted in the loss of vehicle traction, causing the car to spin out uncontrollably. The vehicle collided with an island, bounced into oncoming traffic, and sustained severe damage, including: •Tires ripped off the rims •Front axle damage Injuries: I sustained a lightly sprained neck as a result of the incident. Vehicle History: The vehicle had been in the custody of the Hyundai dealership just days prior to this incident for an engine/powertrain recall and replacement. The dealership held the car for over a week to address the issue. However, shortly after retrieving the vehicle, the brake failure occurred. Observations and Concerns: •The brake failure occurred after recent service by the manufacturer dealership. •Hyundai vehicles are known to have documented brake system issues, which may have contributed to this incident. •This failure nearly resulted in a life-threatening accident. Action Requested: I am requesting an investigation into the service performed during the recall and the brake system failure. It is imperative to determine accountability and address any potential defects to prevent future occurrences. [XXX] [XXX] - Victim and incident reporter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
A rod from the engine made a hole in the engine the destroyed the engine. My wife was driving on a highway wen the failure occurred. She was lucky to be able to get off the highway and safely onto medium before car came to complete stop. The dealer confirmed a rod destroyed the engine. Hyundai asked photos of the engine and other components. No warning lights came on before the failure. The only symptom was the engine was consuming a quart of oil every 1000 miles.
Approximately five weeks ago, my 2015 Hyundai Sonata showed a check engine light. I took it into the dealer and paid a diagnostic fee which revealed the third cylinder misfire in the engine. I paid to have the engine cleaned yet the light continues to stay on and the car has been Running low on oil every time it gets checked the dealer states that the engine needs to be replaced
The contact owns a 2015 Hyundai Sonata. The contact stated that the vehicle was taken to an independent mechanic and was informed that the vehicle was consuming an excessive amount of engine oil. The contact was informed that the failure might be related to the federal safety agency Campaign Number: 17V226000 (ENGINE AND ENGINE COOLING); however, the VIN was not included. The vehicle was taken to a local dealer and the contact was informed that the vehicle was not included in the recall. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 80,000.
Engine sputters, no power. Warning light comes on that there’s a malfunction pull over and do not drive. We had the dealer look at it and he couldn’t find anything wrong.
The contact owns a 2015 Hyundai Sonata. The contact stated while driving 35 MPH, the check engine warning light illuminated. The contact stated that the vehicle went into LIMP Mode, was jerking, and failed to exceed 45 MPH. The contact pulled over to the side of the road. The vehicle was towed to the dealer, where the engine knock sensor was replaced; however, the failure recurred while driving. The vehicle was driven to a nearby dealer, where it was determined that the engine needed to be replaced due to the connecting rod bearing failure. The dealer filed a claim with the manufacturer; however, the claim was denied. The dealer replaced the two engine knock sensors and the main fuel lines. Additionally, the fuel tank was drained; however, the failure persisted. The vehicle was driven to the dealer, where it was determined that the engine needed to be replaced due to connecting rod bearing failure. The dealer filed another claim with the manufacturer. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 12,257.
Engine burns too much oil and needs oil replenishment every 2 weeks while driving only 100-200 miles. This is extremely hazardous cause on highway the car can stall anytime which has happened in the past. The engine has been fixed for leaks before but still is burning oil and no mechanic will touch it saying it is a common issue of hyundai. Why is this model no part of the class action lawsuit?
My Hyundai sonata is burning oil internally from the engine
Engine not holding pressure. Week of September 22, 2024. Had to have car towed either [XXX] or [XXX] by Champion Towing to Columbus Hyundai. Spoke with Rodney Cockrell. Engine not holding pressure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Engine turned off running. Car was at Hyundai Dealer, Puerto Rico for 5 months. The car belongs to campaign lots 21-01-066H and 19-01-006H-2, which establishes alternative transportation service, or rental car coverage, the transportation service was denied. In addition, Hyundai PR did not provide me with a warranty period for the new or remanufactured engine, fuel pump and starter. A complaint was filed with DACO (government agency) and it was found in favor of the defendants Hyundai de PR and Sojitz (Cataño, PR) since they did not issue documentation reporting that it was covered under the campaign, they argue that it was as a courtesy (good will) which they also did not present evidence of. After repaired (200 miles) the car presented low voltage, code P0234-P0236 overboost condition, the unit was verified presenting broken cables from one tail of the map sensor. I incurred transportation and crane expenses, and the repair of the cables, and the replacement of the map sensor.
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