2015 HYUNDAI SONATA Complaints

My daughter’s Car stalled in middle of freeway twice. The second time it ruined the engine it was confirmed by my auto repair shop. Transporting it to Hyundai dealership. It’s a 2015 Hyundai sonata engine huge issue. Almost catastrophic stalling on the freeway. Please help- thanks.

While driving our vehicle (Hyundai 2015 Sonata Hybrid) around 25 MPH speed in city road... the vehicle stopped completely by itself in few seconds. Got the message "Hybrid System Warning! Safely Stop and Do not Drive" in dashboard and beep beep sounds. Thank god, no accident, the vehicles behand able to stop and avoid the collision. This is serious SAFETY issue, as this could cause accidents if vehicle stops by itself while driving. This is 3rd time in last few years with this vehicles. The recent incident happened was on 5/1/2024 morning around 8.00 am. We went to the Hyundai Service Center and they did looked at the codes and ran some scans and they found nothing wrong. And they said it could be some wrong system warning and can be ignored, as they can't reproduce the issue. And told us to report if this happens, but the worry is that, if this happens it could be serious life threating accident or injuries. They said they also got similar other Sonata Hybrid got same issue reported same day, but they can't find root cause. Same issue was happened last on 9/30/2022 and one before in that same year. They can't find the root cause that time too. They just updated software that time...and hoped that will fix. But the issue repeated again. While searching on the internet, found many people reporting this same error message and suddenly stopping the vehicle by itself. Very scary safety concern. So that's why we are reporting this to NHTSA. To take action on this with the Hyundai and investigate more. Now worried when we drive this vehicle. I have all pictures taken when this issues happened on 5/1/24 and also 9/30/22. I will share those here. Let me know if you need more information on this.

Drivers side seat belt does not retract properly. If i pull it out a little too far when buckling then it will just hang there instead of retracting snugly so it provides the same amount of safety as having no seat belt on at all. Every time that I took my car to the dealer for different fixes I always brought that up and they always overlooked it and never did fix it and now my extended warranty is out and it's still not fixed even though it was like that the day that I bought it and I started complaining about it that very first week.

My Sonata is experiencing Engine failure due to excessive and irregular oil consumption. The Hyundai dealership conducted an oil consumption test in which it was discovered that the car is excessively using oil. My Safety and the safety of others were put at risk as the engine slow 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 Hyundai dealership and submitted to Hyundai for all or partial financial assistance for a new Engine and in turn was declined by Hyundai even though they have a know issue of their Engines consuming an unusually high rate of oil.

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated while driving 45 MPH, the vehicle started overheating, and smelled an abnormal electrical burning odor inside the cabin. Several unknown warning lights were illuminated. The contact veered to the side of the road, turned off the vehicle and inspected under the hood. The contact stated that the vehicle failed to restart and was towed to the residence. The contact received notification of NHTSA Campaign Number: 23V651000 (Service Brakes, Hydraulic) which he related to the failure. The dealer was notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

The check engine light began flashing so I shut the car off and had it towed to West Allis Hyundai. The service garage took the car for a test drive (even though the user manual states not to run the engine), and according to the dealer, the car engine "blew up" and stopped running. I assume the engine seized up. the engine only has 43,000 miles and should be covered by the 100,000, 10 year warranty that comes from the manufacturer. The car has been at the dealer for over a week without any definitive answer if the engine will be replaced by Hyundai under warranty. Also, the dealer has not provided a loaner car so I am without any transportation while my is in the shop. Note that since I've had the car all maintenance has been done by West Allis Hyundai.

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the message "Turn off the Engine Immediately" was displayed. Several unknown warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. Later, the contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle failed to restart with several unknown warning lights illuminated. The vehicle was towed back to the dealer, who then diagnosed failures with the ABS and transmission. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

Engine light comes on and alarm stating hybrid sytem failure unsafe to drive. Car loses power and can't be driven. Had this fixed twice. This time it only was fixed for two days.

In December, 2019 I purchased a 2015 Hyundai Sonata for my son that had around 32K miles. Maintenance records looked good, and I continued to keep up with the maintenance on this vehicle. Around 64K miles, I was notified after an oil change the vehicle was low on oil and a gasket needed replaced. I took the Sonata to another place to get the oil changed and for a 2nd opinion. The conclusion of the 2nd opinion was there was internal pressure causing excessive blow by. That even if I replaced the valve cover gasket, the pressure would build up. Ultimately, we determined the vehicle is consuming/burning oil. Columbia Hyundai said there wasn’t anything they could do because my vehicle was out of warranty. My issue was and continues to be Hyundai will not do anything about the oil consumption issue. I am being told the engine will fail and maybe then if a rod is thrown will they replace the engine. I am putting a 1 to 1.5 quarts of oil in this vehicle every two weeks. My son still drives this vehicle and he is in college. Hyundai wants my son to drive this vehicle until the engine fails until they will even consider doing anything about it? I don’t even trust this vehicle to take on long trips. It has been a problem trying to keep up with this issue. When the engine fails (Hyundai said it will) while my son is driving this vehicle, I pray he is not on a dark country road, or on the expressway. Hyundai's negligence and their willingness to ignore this issue is irresponsible. I can tell you I will not be purchasing anymore Hyundai’s. They do not take ownership of this issue. Regardless if I am not the original owner, stand behind your vehicles. There has been a class action lawsuit filed against Hyundai for this same problem. I am asking Hyundai to do the right thing. I have all my maintenance records. Thanks for your time, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2015 Hyundai Sonata. The contact stated when starting the vehicle, the vehicle experienced a hard start and shuddered. No warning light was illuminated. The vehicle was taken to an unknown dealer, where washer fluid was poured into the vehicle. The vehicle was then taken to an independent mechanic, who informed the contact that the oil was 2 quarts low, and the mileage was below the next recommended oil change. The contact stated that the failure recurred. The vehicle was taken to an unknown second dealer, where the contact was informed that no signs of oil leak and smoke were found during the inspection. The dealer determined that oil could be leaking in the engine. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 95,000.