Sudden uncommanded high engine revving 4000 rpm with loss of forward acceleration while driving. ISG (Idle Stop n Go) indicator on dashboard turned yellow and system could not manually override. Vehicle was turned off. After car turned back on after about 30 minutes It entered a Protective Limp Home Mode, which cleared the systems. All seemed back to normal. It was advised to have vehicle towed to the dealer where purchased. The vehicle has only 4,000 miles and 9 months old. To date the dealer could not replicate the malfunction and could not find any abnormalities In the codes.

Source: NHTSA complaint ODI #11761527 · view all complaints for this vehicle at nhtsa.gov

While traveling the following have happened multiple times. It has already been serviced by the dealership who corrected all pending recalls and then informed me they could not replicate the problem. It has now happened since the vehicle was returned to me. This morning while driving at freeway speeds. Multiple times Total HUD Failure: The Heads-Up Display (HUD) completely cuts power and turns off. Dashboard Cascade: The digital instrument cluster momentarily flashes almost every critical warning light simultaneously (including Brake, EPS, Charging, and Lane-Keep systems) before clearing itself. Powertrain Integrity: The engine and hybrid powertrain continue to run smoothly with no loss of propulsion or mechanical stuttering when the event occurs.

Source: NHTSA complaint ODI #11764919 · view all complaints for this vehicle at nhtsa.gov

My Gf was driving car coming up on stopped traffic when automatic braking engaged slamming on brakes for no reason causing the car behind to rear end my vehicle, My Gf was transported to hospital with 4 broken ribs with each rib having multiple fractures, She was in ICU for 2 days and total of 4 days. She has had to go back for another 1 day stay for pain and breathing difficulty.

Source: NHTSA complaint ODI #11754733 · view all complaints for this vehicle at nhtsa.gov

Component: Forward Collision Avoidance / Steering / Electrical SystemDescription of Incident: While driving a rented 2026 Hyundai Tucson SEL AWD (VIN: [XXX]) on the [XXX], the vehicle experienced a severe, uncommanded steering intervention. While maintaining momentum on a winding road, the vehicle's automated systems falsely intervened, aggressively pulling the steering wheel and forcing the vehicle toward the edge of a cliff. The sensation mirrored violent torque steer, fighting driver input and nearly causing a catastrophic departure from the roadway.Safety Risk: This VIN is currently unlisted for active campaigns, but it is exhibiting the exact life-threatening failure mode detailed in NHTSA Campaign 26V316000 (FCA software defect). The manufacturer's current recall scope is inadequate and must be expanded immediately to include this VIN sequence before an uncommanded steering event results in a fatal crash. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11751443 · view all complaints for this vehicle at nhtsa.gov

I lease a brand new 2026 Hyundai Tucson from Hyundai of [XXX] in [XXX] onXXX. I later discovered that there was an open recall on the vehicle dated XXX almost two months prior to my taking delivery of the vehicle. I've tried to secure a loaner car from the dealership in order to get the recall resolved but have been told it would be months before a car is available. From my understanding, this vehicle should not have been delivered with an open recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Source: NHTSA complaint ODI #11760848 · view all complaints for this vehicle at nhtsa.gov