Driving at 55 and the engine blew. No warning, no check engine light, no sign of anything wrong. Power steering loss, limo mode activation. Almost rear ended during catastrophic failure. 111,000 miles

- Vero Beach , FL, USA

The vehicle is slow to accelerate and as its accelerating it often will jerk or hesitate roughly. There have also been times when accelerating, such as getting on a highway, that the whole (what I assume to be) throttle system will almost stop and it feels like the car is just going to stop right there on the highway. It's very dangerous as cars behind me are also accelerating and not expecting my vehicle to just stop. The vehicle is available for inspection. There are no warning lights, messages, or symptoms prior to the issue. It has not been inspected by anyone yet.

- Fort Wayne, IN, USA

Vehicle suddenly lost power while in operation. Vehicle was in motion approaching an intersection. When left turn indicator was activated, all lights on the instrument panel illuminated, the engine shut off, and power steering was lost all while the Vehicle was in motion approaching a intersection with stop sign. Vehicle was able to stop before entering the intersection, but would not start again and we were stranded in the middle of the road. Electrical systems appeared to be working. Battery and alternator are functioning normally. After Vehicle sat for 20min, it then was able to start and moved out of the road to a safe location. Vehicle was towed to mechanic that confirmed Battery health and alternator functioning. Vehicle was then taken to dealership for recall 210 safety repair. Dealership service unable to determine cause for loss of power while Vehicle in operation. No explanation, offer of additional service, or remedy has been offered despite requests. I do not feel it is safe to operate this vehicle in the absence of information related to the sudden loss of power during normal operation. Had this occurred in another setting with more traffic or less room for safely coasting to a stop, serious injury or worse could have resulted. The vehicle is still eligible for the 10yr 100k mile powertrain warranty and I am the original owner. We do not feel we can safely operate this vehicle and need guidance on how to proceed with pursuing a remedy to the situation from the vehicle manufacturer.

- Burlington, NC, USA

My ABS lights came on and then minutes later my check engine light kept blinking while my car kept stalling or not let me accelerate in the middle of traffic. It-??s like the engine dies but the car is on. It only stalls for a second then accelerates then stalls again and accelerates. Almost caused an accident. Seems that this is a problem for a lot of these models. It-??s just crazy how it all happened back to back. My car has been running fine otherwise till that happened.

- Hinesville , GA, USA

The contact owns a 2015 Hyundai Sonata. The contact stated while driving at an undisclosed speed, there was a knocking sound coming from the engine. The vehicle was taken to an independent mechanic and an engine oil change was performed. After retrieving the vehicle, while driving at an undisclosed speed, the engine was sputtering and the vehicle was hesitating while driving; the vehicle later stalled driving. The vehicle was towed to the local dealer who diagnosed that the engine had failed and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure but no assistance was offered. The failure mileage was 75,600.

- Niagara Falls, NY, USA

My Car is burning engine oil at in alarming rate. I put 5 quarts of oil in and my check engine light began to blink and my car would accelerate more pass 50 mph. So in 6 days and 578 miles; my car had less than a half of a quart of oil in it. My car is having engine trouble. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

- Rex, GA, USA

While driving on the freeway the engine began loosing power and there is a knocking sound. My daughter was almost rear ended trying to get off the freeway. The vehicle was inspected by an independent mechanic and i was told the rod bearings are bad and the engine needs to be replaced. The vehicle has regular oil changes and does not consume a lot of oil. No warning lights came on. The dealership refuses to inspect the vehicle because it has a salvaged title. The failure happened at 108k miles.

- Palmdale, CA, USA

Engine had knocking then completely froze while driving due to low oil pressure. Car has been well maintained, regular oil changes and just had axle repaired. Hyundai has extended warranty to cover this issue that is common on these vehicles and should cover the cost of the new motor. Consumer spoke with Hyundai corporate and the case number is [XXX]. Although they are well aware of cars catching fire and are even part of a major litigation lawsuit for this same situation consumer is getting nowhere with them. Consumer's daughter could have been seriously hurt in this incident. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).-??

- Ridgeway, VA, USA

Faulty motor. No warning lamps or any other symptoms prior motor failure. At 123,310 miles motor spun lower camshaft bearing cause motor to lock up on a busy highway. Same as the 2013's & 2014's.

- Worthington, IN, USA

The contact owns a 2015 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the vehicle hesitated during acceleration and lost motive power with several unknown warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed with engine failure. The dealer informed the contact that the engine needed to be replaced; however, the dealer declined the engine replacement due to the previous owner's failure to have the Manufacturer Service Campaign Number: 953 (ECM & Cluster Update - Engine Monitoring Logic Product Improvement) performed prior to the failure. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was 124,803.

- Durham, NC, USA

The car keeps throwing a code and going into limp mode. For the knock sensor. It was replaced less than a year ago and it is now throwing the same code. And once again in limp mode. The first time this happened was around 10/15/2021, &now today 6/17/2022

- Enid, OK, USA

The contact owns a 2015 Hyundai Sonata. The contact stated while driving 65 MPH, the vehicle began to shake and then stalled without warning. Due to the failure, the vehicle was towed to a dealer where the mechanic discovered that the spark plugs had disintegrated causing the piston rings to be damaged. The vehicle was diagnosed with engine failure. The manufacturer had yet to be notified of the failure. The vehicle was not repaired. The failure mileage was approximately 162,000.

- Meeker, OK, USA

1/2022. My vehicle start leaking oil. Vehicle was under warranty. Had multiple things replaced. I thought oil leak was fixed. Not even a month later in 2/2022, the vehicle was leaking oil again. Brought it back to dealer & they redid gaskets, seals, etc. Now on 4/22/22, I have not even put 3000 miles on the vehicle since it was at the dealership & there was a knocking noise coming from under my hood. Called the dealership and they said I needed to get it back to them. Oil consumption test was never done because it was assumed that my oil was low because it was leaking. Both times oil was put in my vehicle. On 4/28/22, I was at work and went outside to check my oil and there was little to no oil on the stick. I immediately added 5 quarts of oil which is required for my vehicle. The knocking did not stop. I left work to run a brief errand on 4/29/22, and had just pulled out of work onto a very busy four-lane highway. All of a sudden I hear this big boom under my hood, my car locks up and my oil light comes on. I immediately took my foot off of the gas and coasted into the next driveway at a business. There was oil all over the road and pouring out from under my car. It happened to be an auto parts store. A mechanic came outside and looked and said a rod went through my engine block & oil was pouring out of my car. I started to have an anxiety attack and went into shock. Luckily I was not on the interstate because it could have been very bad. I am now without a car. None of the rental car places have any vehicles available and I have a full-time job & am a single mom with 2 kids. The dealership was nice enough to have my car towed to them 45 minutes away. They then told me about an oil consumption problem with Hyundai and there is a big class action lawsuit. This should have never happened. Apparently the oil consumption was never sent out as a recall or anything else so I was unaware of it to even know to check my car other than regular oil changes.

- Denham Springs, LA, USA

Was driving with cruise control on and driving close to 70mph and the RPMs shot up passed 5 then the car jerked and my speed had went from 70 down to 50 and 40 the cruise controle turned off on its own and the car lost power but was still on but it just wouldn't drive passed 2 rpms and the check engine light was flashing so I turned around and headed the opposite direction so I could get the car off the road then it made this loud noise sounded like throwing metal inside a metal bladed fan and then the car shut off and hasn't started since. The car did not over heat or have any smoke coming from it.

- Portsmouth, OH, USA

I had closed from work one morning and was headed home. Just a few seconds after taking off, my engine completely shut down. Thank goodness I wasn't in on a highway or at a heavy traffic area. I managed to park my car by the road side & tried to restart my engine, but the car wouldn't start. I towed the car to the nearest mechanic, only to hear that my engine is done & needs replacement. I've constantly kept up with frequent oil changes & always used synthetic oil. Current odometer reading is 153k & I believe the car still has the potential to stay on the road a longer time if the engine is taken care of. I've reported the issue to my nearest Hyundai dealership & they've asked me to tow it to them, but they can't promise that they'll take care of the problem. Worst of all, that's the only car I have & I'm still making payment on the car.

- Parlin, NJ, USA

The contact owns a 2015 Hyundai Sonata. The contact stated that the vehicle was consuming an excessive amount of engine oil. After checking the dipstick it was determined that the engine was consuming one quart of oil per week. The cause of the failure was not determined. The local dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was 75,000.

- Newburgh, IN, USA

The contact owns a 2015 Hyundai Sonata. The contact stated while driving approximately 40 MPH, the vehicle was stalling with the check engine warning light illuminated. The vehicle was taken to an independent mechanic and diagnosed with engine failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 75,000.

- Kansas City, KS, USA

2 days ago my car had red orange like engine light came on while i am driving on [XXX] near [XXX]. next to [XXX] my car stopped running so I pull over and I call my local mechanic who sold me the car. JS AUTO In SANTA ANA, CA. He came in a towing truck. [XXX]. ALSO [XXX]. THEY WORK IN JS AUTO REPAIR MECHANIC SHOP. HE ALSO PUT A ENGINE IN MY SONATA HYBRID AND REDID THE MILEAGE ODOMETER IT WAS 49000 but the DMV REGISTATION PAPER SAID 146900 any way. I went to the mechanic shop last week complaining about engine light and they swap the something near the fuel hose entrance area. then 2 days my engine light came back on and [XXX] CAME TO ME ON [XXX] with towing truck, he was asking what happening, and he ask for the KEY FOB. HE start the sonata and told me follow me in my towing truck to JS AUTO SANTA ANA TUSTIN SHOP SO I DID> I SPEND 5 hours not having lunch and break fast. I mention to him about LEMON LAW FOR PURCHASE USED CAR. HE TELL YELLED AT ME> I SAID I GAVE U COMPANY CASHG CHECK FOR 10,000. don't tell me what I can say can not say in front of your customers. he said go talk to TUSTIN HYUNDAI NEAR YOU> AND I LET LEFT THE SHOP AT 445pm because shop closed at 5, pm I thanked MANAGER [XXX] for buying LUNCH AT REDHILL CAFE STEAK CHEESE STREAL 12 inch sub sandwich. then I came home and google search on EVAP LEAK. because MANAGER [XXX] TOLD IT WAS EVAP LEAK ERROR ON THE MACHINE BECAUSE THEY BRING THE EVAP LEAK TESTER FROM JS AUTO GARDEN GROVE LOCATION< PLEASE GOOGLE JS AUTO GARDEN GROVE SO ANY FAULTY EQUIPMENT THEY ARE USING AND ANY BAD FINANCIAL DEALING THEY ARE DOING < I THINK THEY MIS CALCULATED MY USED CAR> I SHOULD PAY MAYBE 8500 or 7500 US DOLLARS> INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Irvine, CA, USA

Was diving the car and experienced system failure, no prior warnings or issues. Had regular oil changes throughout, however, a few days ago in normal driving conditions, the check engine light began flashing and car felt like it was losing power. Had to pull over to the side of the road and shut the car down. Vehicle would not restart and had to have the vehicle towed to the nearest dealer. Dealer informed us that the "engine was locked" and had to be replaced, car only has 62K miles on it. Research online has uncovered others that have had the same experience and issue with the 2015 sonata that has resulted in replacement of the entire engine. Dealer has not confirmed if repairs will be covered, but if we had been in a high traffic area the car losing power suddenly without warning could have resulted in serious injury getting the car out of fast paced traffic. There appears to be an known issue, as when we asked the dealer about others on-line who have had this happen, dealers response was "we have seen this before, yes." But, now we have been close to a week without a car, no loaner from the dealer, and no indication on how this will be fixed.

- Osteen, FL, USA

I was driving on the expressway. After about 18 miles the vehicle slowly decelerated to a stop. I was able to safely exit the expressway to the side street. I turned the car off for a few minutes. It started back up but has not accelerated pass 20/25 miles. There-??s also major oil consumption. Camshaft position & ccv issues yearly requiring sensors to be replaced. Increased gas consumption. There-??s also been a humming sound coming from the car that-??s not been able to be diagnosed by any mechanics.

- Chicago , IL, USA