2024 Hyundai Tucson engine problems

Filed Nov 2, 2026 · Brakes, Engine · VA

The vehicle suffers from a severe, unresolved manufacturing safety defect causing an intermittent loss of propulsion during highway operation. On multiple occasions under highway acceleration, the engine RPMs spike high but the vehicle completely fails to respond or accelerate, causing a dangerous power drop down to 65 MPH in active traffic lanes. To regain throttle response, the driver is forced to execute an emergency lane merge to the highway shoulder, turn the ignition completely off to clear the system, and restart the motor. The vehicle simultaneously exhibits an progressive powertrain defect path, including severe drivetrain binding where shifting into reverse gear triggers a violent physical thud and blocks the rear axle from backward movement until excessive throttle is applied. The vehicle also has a documented history of chronic Cylinder 1 engine misfires paired with an active loss of interior cabin heat at an engine idle, which indicates an internal combustion cylinder block or head gasket breach. The authorized franchise dealership has continuously failed to execute a physical component teardown to resolve the underlying structural root causes. Instead, service drive personnel cleared stored error codes on a stationary vehicle while falsifying vehicle road-test odometer metrics on the final invoice. This vehicle is actively utilized for commercial child transportation and nanny services, and the manufacturer has had formal notice of these recurring, un-remedied safety defects under active corporate case files well within full warranty windows. An independent federal safety review into these drivetrain tracking parameters is requested.

Filed Aug 28, 2026 · Engine · TX

I purchased this vehicle brand new in December of 2023 - It has an oil consumption issue which started on May 13, 2024 - I have had the vehicle to the dealership for repairs to resolve the issue 13 times so far - Vehicle is currently at the dealership and has been for 7 days and they have not done anything to rectify the issue - Dealership says they are waiting on Hyundai to give them the approval to proceed - They have not provided me with a loaner vehicle - I have had to rent a car so I can get to work - The vehicle only has 28,388 miles on it - The issue started in May of 2024 with only 5,412 miles on it - I filed a complaint with Hyundai Case # 40508090 but they have failed to repair the vehicle or buy the vehicle back from me - I need help with this issue and I don't know what else to do

Filed Jul 7, 2026 · Engine, Fuel system · VA

Subject: Urgent Drivability Concern – 2024 Hyundai Tucson (6/22 Incident) Vehicle: 2024 Hyundai Tucson Date of Incident: XXX Trip Details: [XXX] to [XXX] (~160+ miles) Summary of Issue: During a long-distance drive on XXX, the vehicle experienced severe and consistent drivability issues that created unsafe driving conditions. Symptoms Observed: •Severe loss of acceleration / stalling behavior throughout the entire trip •No check engine light illuminated at any time •When pressing the accelerator: oTachometer increased (RPMs rising) oVehicle speed decreased or failed to increase appropriately •Significant delay in acceleration, especially when: oMerging onto the interstate oPassing other vehicles •Cruise control behavior: oSeemed to manage acceleration more effectively than manual throttle oHowever, still exhibited slow response when additional acceleration was required •Auto Start/Stop system: oSystem automatically disabled itself oWould not allow reactivation during the trip Safety Concern: This condition made it difficult and unsafe to: •Merge into traffic •Maintain appropriate highway speeds •Execute passing maneuvers Dealer Visit (Near [XXX]): •Vehicle was inspected after sitting for a couple of hours •Dealer reported no issues found •However, the problem was persistent and clearly present during operation under driving conditions Took vehicle to a dealership in Raleigh and asked that they look at the fuel injectors. They determined that all 4 injectors were failing and replaced them under warranty. Concerned that Hyundai America has not issued a recall as driving the vehicle with this issue creates a serious safety concern that would lead to injury or loss of life INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 20, 2026 · Engine, Fuel system · MT

While driving at approximately 70 mph on a highway under normal conditions, the vehicle experienced a sudden loss of engine power. A check engine light illuminated at the time of the failure, and the vehicle was unable to maintain normal acceleration or consistent speed. The loss of power created a hazardous situation in active traffic, as the vehicle could not safely maintain speed with surrounding vehicles. The vehicle was later inspected by an authorized dealership, which confirmed severe internal engine damage, including cylinder damage and engine misfire requiring major repair or replacement. No clear root cause has been provided. There were no prior warning signs or symptoms before the incident. WARNING SIGNS PRIOR TO FAILURE: NONE OBSERVED. The vehicle is available for inspection upon request. DEALER CONFIRMATION: YES. MANUFACTURER INSPECTION: UNKNOWN.

Filed Apr 4, 2026 · Engine, Fuel system · GA

Component: Engine/Powertrain/Electrical System Incident Description: I am reporting a recurring, life-threatening "Loss of Motive Power" (Dead Pedal) in a 2024 Hyundai Tucson (Alabama-built). On multiple occasions, the vehicle has failed to respond to throttle input during high-risk maneuvers, specifically while merging into 45+ MPH traffic. The vehicle "chugs" and stalls, refusing to exceed 15 MPH despite full accelerator depression. This defect leaves the vehicle and its occupants stranded and defenseless in the path of oncoming high-speed traffic. Technical Context: This vehicle is currently subject to the federal safety agency Recall 23V‑526 (Hyundai Campaign 246) for electronic controller damage that can cause "CAN communication disruptions." I believe the "Dead Pedal" failure is a direct result of these communication disruptions between the engine and transmission control modules. Furthermore, Hyundai has issued TSB #24-AT-001H-1 for "Hesitation when accelerating," yet the authorized dealer (Ed Voyles Hyundai) has been unable to remedy the defect after 84 cumulative days out of service. Safety Risk: This is not a convenience issue; it is a critical safety failure. The unpredictable nature of the power loss makes it impossible to safely judge gaps in traffic. The vehicle effectively becomes a stationary object on active roadways without warning. Manufacturer Response: The manufacturer has been formally notified via certified legal counsel. Despite 79 consecutive days in the current repair attempt (since Jan 16, 2026), the manufacturer has failed to provide a fix or acknowledge the severity of the safety risk. An informal third-party evaluator attempted to dismiss the claim despite the vehicle's documented inability to maintain motive power. We are requesting that the federal safety agency investigate the adequacy of Recall 23V‑526 and TSB #24-AT-001H-1, as these measures have failed to resolve this life-threatening "Dead Pedal" condition in my vehicle.

Filed Mar 23, 2026 · Engine · TX

I am submitting a vehicle safety complaint regarding my 2024 Hyundai Tucson Hybrid. The vehicle has a recurring engine warning issue (code P0471) that has not been resolved despite multiple repair attempts by an authorized Hyundai dealership. Additionally, there is a concerning discrepancy regarding vehicle usage while in dealership custody. My records indicate a substantial increase in mileage during service, which is not reflected in official service documentation. This raises concerns about vehicle handling and accountability. Hyundai has declined to escalate or properly address the issue and has advised that they will continue repair attempts without further resolution. Given the recurring nature of the issue and the lack of accountability, I am concerned about potential safety risks. I respectfully request that this matter be reviewed and recorded as part of any ongoing safety investigations.

Filed Mar 4, 2026 · Electrical, Engine · NY

I am submitting this complaint regarding Hyundai Safety Recall #290 (the federal safety agency Recall No. 25V893) as it applies to my vehicle, VIN [XXX] . I received the official recall notice by mail on February 13, 2026. The recall identifies a defect involving the tow hitch wiring harness control module, which may allow water intrusion. According to the recall documentation, this defect can cause inoperative stop lamps and, in rare cases, an electrical short that could result in overheating or a vehicle fire. Since receiving the notice, I have contacted Hyundai Motor America corporate customer care three separate times seeking escalation and guidance on how to safely address this recall. During each call, Hyundai stated that no repair solution, parts availability, or timeline exists for remedying the defect. Despite the recall involving a documented fire risk and potential brake/stop lamp failure, Hyundai representatives advised me that I could continue driving the vehicle while waiting indefinitely for a remedy. No interim safety measures, inspections, alternative repairs, or mitigation steps were offered. I am concerned that Hyundai is failing to properly execute a federally mandated safety recall and is placing consumers in the position of operating vehicles with known, unresolved safety defects. Being advised to continue driving under these circumstances creates a risk to vehicle occupants and to other motorists. I am requesting that the federal safety agency review Hyundai’s handling of Recall #290, specifically regarding recall remedy delays, lack of escalation, and failure to mitigate an acknowledged safety risk, and take any enforcement or compliance action deemed appropriate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 2, 2026 · Engine · NJ

On Wednesday February 4, 2026 my car began to shake and shudder and almost stall out and the check engine light came on again. I had just gotten my car back from Burlington Hyundai the day before for the same problem. I drove it straight to the dealership for service. This time, they said it was a problem with the EGR system. They replaced some things and I got my car back on Friday February 13, 2026.

Filed Mar 2, 2026 · Engine · NJ

On Saturday January 31, 2026, I was driving and the tachometer started to go low like the car was going to stall out and the car began to shake. Then the check engine light came on. I was afraid to drive it, so I parked it in a church parking lot and had it towed to Burlington Hyundai on Sunday February 1, 2026. On Monday February 2, 2026 Burlington Hyundai said there was a problem with the spark plugs and that was why the check engine light came on. They replaced the spark plugs and it was covered under warranty. I got my car back on Tuesday February 3, 2026.

Filed Mar 2, 2026 · Engine · NJ

On October 8, 2025, my car's tachometer started to dip and my car began to shake like it was going to stall as I approached a traffic light. The check engine light came on. I was close to my destination (about a 1/4 mile) so I drove to the parking lot and turned off the car. I started it again and the check engine light turned off and the car was running fine. On October 13, 2025, I took my car in for a routine oil change to a local repair shop and when they tried to reset the oil change reminder, the system would not work. Within a day, the entire computer system for the radio, warning systems, air conditioner/heat, etc, would not work. I took it to Burlington Hyundai on October 15, 2025 and they had to replace the CPU in the car. I got my car back on October 22, 2025. They said the check engine light did not come on again. It was covered under my warranty. I had my brakes replaced while they had the car out of convenience.