While driving at a high rate of speed propulsion to the vehicle suddenly and without warning ceased, the electric and internal combustion engine were non-responsive (ICE stopped; hybrid motor didn't provide propulsion), the warning light said "Check Hybrid System. Turn off engine" I was put at risk because I was traveling at highway speed and was given no warning before the vehicle shut down. This has occurred nine times, I've reported all to Hyundai, they have had the car in the shop three times, the issue is not fixed. No, despite ODB2 error codes, the car has not shut down while a dealership is driving it. Yes, the vehicle has been inspected multiple times by Hyundai. Yes, always "Check Hybrid System. Turn off engine", in almost all cases the check engine light comes on after that, and in some cases additional lights such as "auto hold". This first occurred in Dec 2023, I was told the car was fixed (it wasn't) and happened again in October 2024. I haven't been able to drive my car since then.

- Apo Ae, NY, USA

I was driving on highway when all of sudden my vehicle began to shake hard and lose power, every time I stepped on the accelerator the check engine light came on, this happened on [XXX] in Los Baños, CA. My safety was at risk as all other traffic was going past me including semi trucks as I was trying to find a safe place to pull over out of harms way, as I was doing this the car shut off completely before I could even pull over. I had to get the vehicle towed to my local dealership where they had it for almost 3 weeks now, only diagnostic I-??ve had back was that it has 2 misfires, one in cylinder 2 and the other in cylinder 4, and that it has no compression in cylinder 2. They said it isn-??t covered under warranty which I believe should be looked into as I could of been serious hurt or lost my life due to this issues. I-??ve had the vehicle serviced up to date since I-??ve owed it and also noticed high oil consumption, not sure if this led to engine failure? The final diagnosis from Hyandai dealer is that engine is no good anymore and need replacement but it-??s not covered under warranty. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- San Jose , CA, USA

My vehicle was purchased in 2018 and currently has 128,000 miles. I took it to the dealership because it was puttering and not holding pil. The dealership did some work on the vehicle. Furthermore, after that trip to the dealership, my car kept burning oil even after recent oil changes that I found myself constantly adding oil. I took it to another licensed mechanic who informed me after a tune up that my car is consistently burning oil. This was after I had a recent oil change. The engine is defective, hyundai knows they are defective and refuse to do anything about it.

- Columbus, OH, USA

Unknown... I recently got an oil change and not even a week later my oil light came on. There's no leaks, I've been to midas several times and no leak was found. Was told to check to see if it had any recalls, my vin doesn't produce a recall but I know there's something wrong with my car.

- Baltimore, MD, USA

Car has been burning oil since September of 2024. It-??s burning 2 quarts of oil every 500 miles. The oil is burning out spark plugs and coils every 3 months. These engines need to be recall and Hyundai needs to be held accountable.

- Senoia, GA, USA

The contact owned a 2017 Hyundai Sonata. The contact stated while on travel, the contact stopped at a local gas station. The contact stated while the vehicle was parked and unoccupied, the contact was informed by the store attendant that the vehicle was on fire. The contact noticed the fire came from under the hood compartment and the vehicle was engulfed with flames. The contact stated an off-duty police officer and the store owner attempted to extinguish the fire with fire extinguishers, however, they were unsuccessful. The fire department was called, arrived on the scene, and extinguished the fire but the vehicle was already consumed by the fire. The vehicle and all properties in the vehicle were destroyed in the fire. The vehicle was towed to a local tow yard. The vehicle was condemned to total loss by the insurance company. A police report was filed. In addition, the contact stated that 75 miles before the fire occurrence, the vehicle was started, and the contact noticed white smoke exiting from under the hood compartment. The contact interpreted it to be frost from the start of the engine being cold. The dealer was made aware of the failure. The manufacturer was not made aware of the failure. The failure mileage was approximately 90,000

- Eustis, FL, USA

Every few months my car-??s engine struggles. It doesn-??t start, or I have to try a few times. For whatever reason I need to get an oil change a lot more frequently than normal and I-??ve been to the shop before and the shop tells me that my engine is recalled but it doesn-??t say that on the website when I put my vin number in. Whenever the engine stops working again sometimes the AC doesn-??t work and it almost put my dog-??s life at risk once.

- Tampa, FL, USA

The vehicle had a recall to replace the motor for bearing failure. They replaced my motor at 101,000 miles. The second motor than failed for the exact recall of bearing failure at 65,000 miles on the new motor. They told me that since I had already have done the recall and my car was now out of warranty that I would have to pay 10% of the repair bill for another motor. This second motor should have been included in that recall.

- Wardensville, WV, USA

I can-??t drive my car on the highway cause then it will shut off and say HEV system error and I have to shut my car off turn it back on then erase the code with my diagnostic tool. My oil light keeps popping up and whenever I slightly press on the gas pedal or go up a steep hill, it starts to rattle, been noticing my oil burns out fast and I have to replace it when it gets low.

- Chula Vista, CA, USA

I am filing this complaint regarding a significant safety concern with my 2017 Hyundai Sonata. Since around 65,000 miles, my vehicle has experienced excessive engine oil consumption. The issue has progressively worsened, and my car now has 126,000 miles. Despite undergoing an oil consumption test that confirmed the rapid depletion of oil, Hyundai and their dealerships have failed to provide a resolution. This defect requires me to add oil approximately every two weeks. The excessive oil consumption poses a potential safety hazard, as the engine could seize unexpectedly while driving due to insufficient oil levels. The risk of engine failure is further exacerbated by the lack of sufficient warnings from Hyundai regarding this known issue. This situation not only jeopardizes the safety of myself and my passengers but also other drivers on the road. I am requesting that the NHTSA investigate this matter, as it appears to be a widespread issue among Hyundai vehicles. Prompt action is necessary to ensure consumer safety and hold the manufacturer accountable for addressing this defect. Thank you for your attention to this serious matter. I am happy to provide additional details or documentation upon request.

- Edgewater Park, NJ, USA

The makes a weird shutter noise when accelerating and won't crank over 60. Loses power when turning or when going uphill. Sometimes has problem starting. Enging light came on twice blinking, once I changed the battery it went off and was working fine. Now it's back on again after a few weeks. Plus my oil tank still comes on and I've just received and oil change. I just bought the car in August of this year, dealership sold to me with a faulty battery.

- Mechanicsburg, PA, USA

Driving home car just shut off still had power to steer and brake but no engine. Pulled it off the main road and it leaked oil but still no engine. Already had the dealer replace the intake manifold at my expense despite hyundai knowing the plastic lever inside fails. We were lucky the snowplow was going the opposite direction as the weather was horrible as we got closer to home. I have a dead car in my yard waiting to have a dealer look at it. We could have been killed due to fault of engine.

- Spencerport, New York, United , NY, USA

The contact owns a 2017 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the vehicle stalled with the check engine warning light illuminated. Additionally, there was white smoke coming from the engine compartment and the exhaust. The contact retrieved DTC code: P0420 for spark plug failure. The spark plugs were replaced; however, the failure reoccurred. The vehicle was diagnosed with spark plugs and catalytic converter failure. The spark plugs were replaced. The contact stated that the spark plugs looked burned. The vehicle was taken to an independent mechanic where the catalytic converter was replaced; however, the failure reoccurred. The contact stated that the vehicle had been consuming an excessive amount of engine oil for almost two years. The contact stated that engine oil was added every 600 miles of driving. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure and provided the contact with the cost for a diagnostic test. The contact declined to pay for a diagnostic test. The manufacturer was made aware of the failure and a case was filed. The failure mileage was unknown.

- Fort Worth, TX, USA

The engine started knocking while I was driving around a lot of cars and while I was going to AutoZone to see why the check engine light was flashing on my car wouldn't accelerate and randomly started stopping and I was fearing for my life when I was going on the highway to go back home. For almost a year now I noticed the oil in my car started burning more and more like I would only drive 1k miles and it would already be done with, so I had to replace it. Hyundai knows this is a problem with this car because I called and asked them about the oil and told me specifically it's an engine problem once it starts knocking then you can come fix your car but want me to pay and fix the whole engine and work process.

- El Paso, TX, USA

The contact owns a 2017 Hyundai Sonata. The contact stated that within a two week period she has add to add 2 quartz of oil in the engine though she has yet to observe an oil leak. The check engine warning light was illuminated. The vehicle has was not taken to a dealer in independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 161,000.

- Berryville, AR, USA

The drivers seat belt does not engage. The engine has been burning oil, misfiring, and even after thousands in repairs was returned to me by the dealership with continued misfiring. When returning the car back to the dealer service center days later after Hurricane Helene, the car continued to misfire and became so overheated the engine light was flashing. Upon calling for a tow, I attempted to raise the hood for the driver to locate the car, but the hood was so hot it burned my hand. The engine was so hot, I believe it was about to catch fire and would have had I not been able to pull over so quickly. Had I been driving on the Interstate, I have no doubt this car would have been on fire within minutes.

- Sarasota, FL, USA

The contact owned a 2017 Hyundai Sonata. The contact stated while the vehicle was parked, the contact noticed smoke was coming from the engine compartment. No warning light was illuminated. The contact exited the vehicle and discovered that the engine compartment was on fire. The vehicle was not occupied during the fire. The local Fire Department (Cuyahoga Heights Fire Department) came and extinguished the fire; a Fire Department report was filed. A police report was not filed. The vehicle was not drivable and was diagnosed as totaled. The manufacturer was notified of the failure. The failure mileage was approximately 90,500.?

- Barberton, OH, USA

The car has been experiencing oil consumption issues for the past 15k miles and it's getting worse hyundai says.y vin isn't under recall and they can't help me. My mechanic says my oil consumption is high and is concerned about potential engine failure. I have to add oil every 500 miles. The 2.4l engine has had major issues but Hyundai will not expand the recall. My mechanic has seen issues like this but Hyundai won't do anything. I have friends with engine failures in similar Hyundai models. This has been going on for about a year when I had mileages in the 77k range. I now have 99k and the oil consumption is getting worse. I am very easy on this car and always do full synthetic changes at the Hyundai recommended intervals for the severe driving schedule. I've never had a car costume anything close to the amount of oil I am using including two other Hyundai I have owned.

- Mays Landing , NJ, USA

The engine is losing oil at a much higher rate, causing a knocking sound. Not accelerating at it should without the sound getting louder and hesitating. This vehicle has been inspected by a licensing mechanic ( Goodyear). The check engine lights and multiple codes have appeared while driving for about the last 4-5 months.

- Conyers, GA, USA

Motor burning oil with no leaks causing it to need replaced, with out any reasoning.

- Topeka, KS, USA