Vehicle experienced a loss of acceleration while driving. When pressing the accelerator, engine RPM increased significantly but the vehicle did not increase speed. The vehicle felt as though it was stuck in one gear and would not upshift or downshift. The issue was most noticeable while driving uphill, where the vehicle was unable to maintain speed despite full throttle input. This created a safety concern as the vehicle could not accelerate normally in traffic conditions. The problem has been progressively worsening over time. Initially there were mild symptoms, but it has become more severe and frequent, culminating in a near-complete inability to accelerate under load. No warning lights or messages were observed prior to or during the failure (if that-??s true-?"adjust if needed). Vehicle has approximately 28,000 miles. The vehicle is currently at a dealership for inspection and diagnosis, but the issue has not yet been confirmed or resolved at the time of this report.

- Layton, UT, USA

Vehicle would not accelerate in high speed zone.

- Kalamazoo, MI, USA

Vehicle went in to limp mode in the middle of driving. Would not accelerate past 30mph. Was able to turn around and pull in to a neighborhood when the vehicle stopped responding altogether and had an additional warning about letting the engine recharge the hybrid system. Restarting the car got it home. This would have been extremely dangerous had it happened on the highway, at highway speeds. Dealership replaced the high pressure fuel pump. Got it back yesterday, we will see if that fixes it.

- Bristow, VA, USA

The 2025 Hyundai Santa Fe Hybrid has had multiple occasions, most recently on February 3, 2026 with 12,330 miles on the car, where the gas-powered engine fails to provide any power to the drivetrain. The car experiences vast power loss and enters "limp mode" where only the small hybrid battery is powering the vehicle. Max speed ranges from 10 - 25mph and there is little, if any, acceleration, even when the gas pedal is pegged to the floor. It is necessary to pull over, engage the flashing safety lights and try to find a safe place to park. After turning the vehicle off and on several times, eventually, the gas engines re-engages. The first incident of this type for this vehicle was on August 7, 2025 with approximately 4,400 miles on the vehicle. It was taken to the dealer, Key Hyundai of Salem, who could not find any DTCs and could not replicate the problem. They said "bring it back if it happens again." They next time was on February 3, 2026 where it happened several times on a trip to and from a local restaurant. This time, at DTC code of P088000 POWERTRAIN / POWERLOSS was recorded and reported. However, by the time the car was seen by Key Hyundai of Salem on February 5, 2026, the code has cleared itself. Hyundai's corporate policy is that historical codes can not be used for Warranty claims. So, the dealer tried one potential fix, cleaning the TCM connectors under the driver's seat, and returned the vehicle stating that Hyundai corporate would not authorize warranty work unless/until the car was presented to the dealership with a current / live DTC or visible broken parts. It seems unsafe to put a vehicle back on the road that could lose power and drivability at any time for no apparent reason. I am aware that there have been several other reports of similar POWER LOSS / LIMP MODE situations by owners of 2024-25 Hyundai Santa Fe Hybrids. At the moment, I am told that there is no current Technical Service Bulletin on this from Hyundai.

- Kensington, NH, USA

While driving at highway speeds (59-?"75 mph), the vehicle suddenly lost propulsion power and entered a reduced-speed -??limp mode, -?? rapidly decelerating and creating a dangerous traffic situation. The dashboard displayed a -??Hybrid Power Control Unit-?? warning along with audible alarms. During the second incident, the vehicle failed to shut off when the engine stop button was pressed. Multiple adult witnesses were in the vehicle on each dangerous traffic situation.

- Granbury, TX, USA

Supplemental Update -?" Ongoing Safety Concerns and Extended Loss of Use Since submitting my initial complaint, my leased Hyundai vehicle (VIN [XXX] ) has now been presented for service for the third time for the same unresolved safety-related issues. The vehicle has been held by the dealership for eight (8) consecutive days during this service visit with no resolution and no clear timeline for return. Safety concerns remain unresolved, including: Persistent toxic/chemical odor inside the cabin Random rear hatch opening while vehicle is parked and locked Repeated false -??windows open-?? alerts Electrical/body control system irregularities To date, I have not been provided with documentation confirming that cabin air quality testing, exhaust intrusion testing, or comprehensive electrical diagnostics have been performed. These unresolved conditions present ongoing safety risks and loss of use. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Torrance, CA, USA

SantaFe Hybrid Calligraphy 2025 with about 9000 miles purchased new from Hyundai dealer. Several times and unpredictably, the vehicle loses power while driving mostly on highway 60-70 mph. operator can push the gas pedal to the floor and the car does not accelerate more than about 25 mph. My wife was on an off ramp with no shoulder to pull off. Very dangerous situation. A message on the dash states to "park and let battery charge". The battery is suppose to charge itself while the gasoline engine is operating.A search engine query reveals many folks are experiencing this same situation.

- Nottingham, NH, USA

My 2025 Hyundai Santa Fe Hybrid has experienced repeated, dangerously abrupt power loss while driving at highway speeds, causing the vehicle to go into "limp mode" without any warning or prior indication. This safety hazard occurred on three separate occasions: First Incident: 7/29/25; Mileage: 9,205. Situation: While traveling at 70 MPH on the interstate, the vehicle suddenly decelerated to 35 MPH and entered "limp mode" without any warning lights or notifications. Dealer Repair: Replaced ignition coil assembly (Parts: 27301R1H, 27301-2M417). Second Incident: 8/27/25; Mileage: 12,898 Situation: While accelerating to 65 MPH on the interstate, the same loss of power and abrupt forced deceleration occurred, again with no warning. This sudden loss of speed created a serious safety hazard for me and other drivers. Dealer Repair: Replaced fuel pump & O Ring Assy-High Pressure (Parts: 35326-2M500, 35305-2m414 LH). Third Incident: 9/25/25; Mileage: 14,830. Situation: Traveling at 70 MPH on the interstate, the car abruptly decelerated, again entering limp mode. This caused surrounding vehicles to swerve to avoid rear-ending me, putting myself and others at risk. Dealer Repair: Replaced High Pressure Sensor (3534202M400), Packing Fuel Pump (31115-0W000), and Fuel Pump and Tube Assy (31119-L1400). In all three cases, there was never any warning light, check engine notification, or app alert before the incident. Hyundai and my dealership confirmed and replicated the issue during each repair. I have reported the vehicle to the Texas DMV, Hyundai and the dealer.These recurring -??limp mode-?? incidents have repeatedly jeopardized my safety, my family-??s safety, and the safety of the public due to the sudden, unanticipated loss of power at high speeds. Since the underlying issue persists and has required three separate major repairs, I am fearful for my safety while operating this vehicle and believe it constitutes a serious safety defect needing federal investigation.

- Fort Worth, TX, USA

Our car had 2149 miles on it. Engine started to stalled on [XXX] on [XXX] from OKC to Tulsa. We made it to Tulsa. The car was towed to Tulsa Hyundai dealership on 12/25/2024. After diagnostic on 12/26/24, we were told the car had bad gas. The dealership performed the necessary work including replacing 4 fuel injectors in order to fix the problem. It cost $3991.52 and it took a week. We were told since this was not a manufacturer problem that we are responsible for the repair. We paid for the repair. We always get our gas from Costco. So we filed a report with Costco stating that we got bad gas from them. Costco turned it into their adjuster at Gallagher Bassett. He investigated and told us that his findings indicated that Costco did not have bad gas in the month of December according to their quality reports. No other cars filed complaints regarding gas issue. Our claim was denied. The question remained where the bad gas came from. Was it truly a bad gas problem or did the car have fuel injector issues and that bad gas was a cover up. We bought a new car, we purchase gas from a reputable company and we ended up with this problem that we were responsible for through no fault of our own. We are filing a report to see whether there are other cars of this model that had similar issues. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Edmond, OK, USA