2024 Hyundai Santa Fe Hybrid

While driving on the highway the vehicle lost power and then lowered the transmission gear and would not accelerate over 17mph regardless of pressure on accelerator. I switched from auto hybrid mode over to sport mode so the gasoline engine could be used yet the transmission would not increase power to the tires. I stopped several times and restarted with no corrections. Vehicle battery drained quickly and vehicle alarm told me to pull over to charge battery. Sat for a few minutes to charge battery, put in drive and vehicle went forward to 17-20 mph and would not go any faster. Pedal was to the floor. The vehicle then gave several alarm lights and system failures. I limped the car home and called roadside assistance. Tried to put car in reverse for an easy tow and the car wouldn't move in reverse.

When accelerating from a stop, the transmission fails to engage causing the engine to rev but not allow for movement until the gas pedal is disengaged then engaged again. This happens sporadically and I have not been able to find a pattern or reason for this issue. I have reported this to Hyundai and taken the vehicle in but the dealership was unable to reproduce the issue after driving the vehicle for 20 miles. This is a safety issue as the vehicle does not always accelerate as expected from a stop and could potentially cause an accident.

We had notice that my wife's 2024 Santa Fe Hybrid Calligraphy AWD, is shuddering and vibrating at low speeds 20 to 40 mph always. Probably now is a little more accentuated. There is nothing on the steering wheel, but in the whole vehicle. Because this is not new, and I am not always driving this vehicle, I need your assistance as soon as possible.

Vehicle Information: 2024 Hyundai Santa Fe Hybird SEL VIN: [XXX] Purchased date: [XXX] (Less than one year) Mileage at incident: 12,753 Incident date: [XXX] Dealer: Kengarff Downtown Hyundai Summary of Problem: I am filing this complaint because of a serious safety concern caused by clear dealership negligence and potential engine failure. During a routine service, the dealership failed to add engine oil, but recorded in the service invoice that it was added. I unknowingly drove the vehicle 3–5 miles without oil, and multiple DTC error codes (P052400, P001100, P001400) appeared. The oil warning light, which should have alerted me, did not activate. Although a later borescope inspection stated there was “no immediate damage,” since then, the vehicle has shown: Significant loss of power and acceleration Abnormally high RPMs, even when the car is stopped Louder engine noises RPM is increasing suddenly while driving downhill without acceleration This vehicle is less than one year old and costs over $40,000. I should not be forced to drive a new car that may have hidden or delayed engine damage. Safety Concern: I have a [XXX], and I cannot risk sudden engine failure, stalling, or fire while driving. This is not only a reliability issue, but a serious safety hazard for my family and others on the road. Attempts to Resolve: Reported to Hyundai corporate, case opened. The dealership admitted the mistake but denied responsibility after the inspection. Hyundai corporate stated “no action until further inspection,” despite clear evidence of negligence. I continue to experience performance and safety issues. Requested Action: I urge NHTSA to investigate this incident and hold Hyundai accountable for both the dealership’s negligence and the potential safety defects (oil light failure, possible hidden engine damage). Consumers should not be left to drive unsafe vehicles, especially when children’s safety is at stake. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

We purchased our '24 Santa Fe hybrid on 9/18/24 new with no problems. On 10/8/24, about three weeks later, I was stopped at a stoplight after exiting the freeway. When the light turned green, I accelerated and felt a clunk, then the car would not accelerate past about 30 mph. Several warning lights came up on the dash. I could hear the engine revving, but it felt like it wouldn't go into the next gear. I thought I could make it to the dealership, which was only a few miles away. But at the next stoplight, I was stopped in a turn lane, and when I pushed on the gas nothing happened. I tried shifting back and forth from park and restarting the car, but nothing helped. The car would not accelerate at all. CHP shut down the intersection and helped me push the car to the side of the road, where I waited for a tow truck. The car was towed to Folsom Lake Hyundai, where it was purchased. Warning lights said "Check hybrid system," "Transmission control system" and "Driver assistance system." The app listed these codes under POWERTRAIN issues: DTC P198500, DTC P178400. We picked up the car from the service center on 10/11/24. They said a wire came loose from the oil pump, so they reattached it according to factory direction and it's fixed. 5 days later, on 10/16/24, the car stalled again. This time on the freeway. I entered the freeway and accelerated, then felt a similar clunk and got the same warning lights. This time, the car would not accelerate at all. I stopped on the side of the freeway and was towed to Folsom Lake Hyundai again. It took almost 2 weeks to repair, but they said the same thing happened again. The same wire came loose, causing the car to stall. Their solution was to reattach it again and wish me luck. They said maybe I drove on a bumpy road, but there's nothing else they can do but reattach it and get it out the door. I do not feel like this is an adequate repair and we are now worried that the car will stall again in the coming days.

Brand new vehicle purchased through Clement Hyundai. Within a couple hundred miles, multiple times vehicle goes into neutral on its own while driving. Have to stop the vehicle and turn off engine to try to get it into drive to get off the road. Takes several attempts to get into drive. Major safety hazard! Repaired once by Jefferson City Hyundai. Same problem happening again. Car not drivable as it is a safety concern. Have found multiple online forums wherein people are having the exact same problem.