Jun 2, 2026Transmission & drivetrainEngine
The contact owns a 2024 Hyundai Elantra. The contact stated that while driving, check engine light illuminated, with a loss of power when accelerating. The vehicle was taken to the dealer where it was diagnosed with power train failure and received diagnostic code P040100. The vehicle was repaired; however, the issue persisted. The vehicle was returned to the dealer multiple times but still continued The manufacturer was notified of the failure. The approximate failure mileage was 43,000.
NHTSA ODI 11741490
Aug 21, 2025SteeringTransmission & drivetrainSpeed control
While it may sound bizarre, I can definitively demonstrate that whenever I am present inside a car, the car become very unstable and bouncy and unsafe to operate. Not only does it not steer straight the car also becomes incapable of coasting smoothly and is constantly racing or aggressively slowing down. I can’t be the only anomaly and whatever is causing this could be widespread and is certainly dangerous. I have found it to occur only with the cars which I am inside. I would like to demonstrate this in person if possible to an investigator.
NHTSA ODI 11682274
Jun 18, 2024Transmission & drivetrainEngine
Vehicle shut off 8 times on my wife while driving. Check engine light did come on with a warning from the vehicle stating a possible issue with our Engine Control System. Shortly after, while ON the roadway, at about 35-40 mph, the car completely shut off. Luckily my wife was going to a church and the church men were able to push her car safely, with our kids inside, off the roadway and into the parking lot. Hyundai Roadside Assistance was contacted and vehicle was towed to Matt Bowers Hyundai in Gulfport, MS on June 5th. During a 12 day stint at the dealership, it was determined that the problem was caused by the open safety campaign (Bulletin 206) and the EGR Valve Assembly was replaced. We took back delivery of the vehicle June 18th, 13 days after the tow/problem.
NHTSA ODI 11595178