2021 Hyundai Elantra Engine Problems

The contact owns a 2021 Hyundai Elantra. The contact stated that there was a knocking sound coming from the engine compartment while the vehicle was idling. The RPM fluctuated and the vehicle stalled while at a complete stop, and while shifted to park(P). The contact restarted the vehicle and was able to continue driving. The check engine warning light was illuminated. The failure had occurred intermittently. The vehicle was taken to the dealer, who confirmed that the 2.0L engine was known for similar issues. The dealer confirmed that the VIN was not included in NHTSA Campaign Number: 21V301000 (Engine). The vehicle was not diagnosed due to a lack of diagnostic trouble codes being displayed. The vehicle was not repaired. The manufacturer was informed of the failure, and a case was opened. The failure mileage was approximately 127,000.

Subject: Vehicle Safety Complaint – Engine Failure – Hyundai To Whom It May Concern, I am submitting a vehicle safety complaint regarding a serious engine failure involving my Hyundai vehicle. The engine experienced a failure significant enough to require replacement. This raises serious safety concerns, as sudden engine failure can result in loss of power while driving, increasing the risk of an accident. In addition: •Hyundai Motor America has not adequately addressed the issue •My case (#xxxx) remains unresolved despite escalation •I have experienced delays, lack of transparency, and no meaningful resolution Given Hyundai’s known history of engine-related issues, I believe this may represent a broader safety concern affecting other drivers. I respectfully request that NHTSA: 1.Review this incident as a potential safety defect 2.Investigate whether this issue is part of a larger pattern 3.Take appropriate action to ensure consumer safety I am available to provide documentation and further details if needed. Sincerely, [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Heating core on car has gone out 3 times the first time costing $2,042.03 to repair, the two follow up ones were done under the warenty

The contact owns a 2021 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the vehicle overheated. The vehicle was taken to the dealer, who informed the contact there was a crack on the radiator. Additionally, the dealer determined that the failure was possibly collision related; however, the contact stated that the vehicle was not involved in a collision. The manufacturer was not made aware of the failure. The failure mileage was 39,573.

The contact owns a 2021 Hyundai Elantra. The contact stated that the vehicle was taken to the dealer for an unknown recall repair and for an oil change. However, while driving at an undisclosed speed after the services were performed, there was smoke coming from the exhaust pipe and the engine oil warning light was illuminated. The contact noticed that the engine oil had leaked onto the roadway while driving. Upon inspecting the vehicle, the contact noticed that the engine oil drain plug was missing. The dealer was made aware of the failure but provided no assistance. The vehicle was then taken to a second dealer, Columbia Hyundai (10981 Montgomery Rd, Cincinnati, OH 45249). However, the vehicle was not diagnosed or repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 15,500.

On 1/27/2022 my daughter was driving home from school in her 2021 Hyundai Elantra SEL which was purchased new on 6/19/ 2021 when at 5600 miles on the odometer a message came on the instrument cluster which read put car in neutral and turn off engine, when it was safe to do so she stopped the car and turned it off in the middle of a two way road because there was no shoulder and no place to exit the roadway when she tried to restart the car the engine would not crank or turn over to start the car so she called me and I called a tow truck while she was waiting vehicles behind her where forced to go around her car when it was safe for them to do so, the tow truck came and took her car to the dealership where she purchased it two days later they called and informed us the engine was completely seized up and that they would have to replace it with a NEW ENGINE despite the fact the original engine had oil and was only six months old with only 5600 miles on it.

At about 11 months old my car suddenly seized while attempting to enter the highway. This came with no type of warning from the vehicle until the car had stopped and then every light on the cluster came on. I was fortunate not to be rear ended. The car was towed and 2 days later the dealership called to tell me there were no errors and NOTHING WAS WRONG with the car. I told them what had happened and they called later that day and I was informed that they needed to install and entire new engine assembly. The car only had 7000 miles on it and should not need a new engine. There is some major design flaw with this car which poses a safety issue. Additionally I looked at my service records for the car and it looks as if the dealership is trying to cover up the fact that a new engine was placed in the vehicle as it is listed as routine maintenance. Please look into this and contact me if needed

The contact owns a 2021 Hyundai Elantra. The contact stated that while driving approximately 70 MPH, there was an abnormal sound coming from the vehicle. No warning lights were illuminated. The vehicle was towed to a dealer to be diagnosed; however, the cause of the failure was not determined. The vehicle was not repaired. The vehicle was towed back to the dealer to be diagnosed; however, the cause of the failure was still not yet determined. The vehicle was not repaired. The vehicle was towed back to the dealer, where it was diagnosed with a coolant leak, and the thermostat needed to be replaced. The vehicle was repaired; however, the failure persisted. The manufacturer was notified of the failure. The failure mileage was unknown.