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Power Train, engine
06/21/2026
While driving on a US highway, the check engine light illuminated and the vehicle lost the ability to start/run normally, requiring the vehicle to be pulled off the road and towed to an authorized Hyundai dealership. Dealer diagnostic testing found the engine failed a bearing/performance test, consistent with connecting rod bearing wear. This failure mode — Check Engine light, DTC P1326, abnormal noise, or a no-crank/no-start condition caused by connecting rod bearing wear — is described in the manufacturer's own internal dealer service bulletin covering an engine warranty extension program for multiple engine families (Theta II MPI and Nu GDI engines) across several model years and vehicle lines. That bulletin acknowledges the failure as a known condition and extends coverage to 15 years/150,000 miles for original and subsequent owners. The failure occurred suddenly and without warning while the vehicle was in active use on a highway, creating a stall/loss-of-power hazard in moving...
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Service Brakes, Hydraulic, engine
04/01/2026
The contact owns a 2015 Hyundai Tucson. The contact stated that while driving at 50 MPH, the vehicle stalled without warning. The engine turned over but failed to restart. The contact related the failure to NHTSA Campaign Number: 22V056000 (Service Brakes, Hydraulic). The vehicle was towed to an independent mechanic shop and then to a local dealer, where it was diagnosed that the engine seized; however, the vehicle was not repaired. The dealer advised that there was no warranty coverage. The Better Business Bureau was contacted and informed that the warranty had expired. The manufacturer was contacted, and a case was filed, but a request for repair coverage was declined due to a failure to have the recall remedy completed; however, both the contact and the previous owner were unaware of the recall. The failure mileage was approximately 118,000.
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Engine
03/16/2026
My 2015 Hyundai Tucson with the 2.4L engine developed a loud engine knocking sound while driving. The knocking became worse and the vehicle became unsafe to drive due to the possibility of sudden engine failure. The vehicle is currently at a Hyundai dealership and has been there for over a month. The dealership denied the warranty claim stating that a different engine component failed instead of the connecting rod bearing. This engine is part of the known Theta II engine defect issue that has caused engine failures in many Hyundai vehicles. A sudden engine failure while driving could result in loss of power, difficulty steering or braking, and could increase the risk of a crash. I am filing this complaint because the engine failure symptoms match the known defect pattern, and the vehicle may be unsafe if the issue is not properly addressed. Hyundai Tucson with 113,000 miles and failing engine. I’ve been told repairs have amounted to $10,000. I was told my car has severe engine fail...
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Steering, electrical System, air Bags
03/13/2026
On March 13, 2026, I was operating my 2015 Hyundai Tucson when the steering locked up, causing me to crash into a tree head-on. In the course of this head-on crash, my airbags failed to deploy. As a direct result of my airbags not deploying in a serious car crash, my head hit the steering wheel, causing a confirmed concussion diagnosis of Post Traumatic Headache and Post Concussion Syndrome in a hospital emergency room. There were no lights or symbols on the dashboard prior to the accident. My car had a prior repair for a front end collision in a body shop and a replacement of the engine in a Hyundai dealership prior to the accident. My car is currently in a tow yard. There has been no inspection of my car by the manufacturer. I have since discovered that there are a number of complaints filed with the National Highway Traffic Safety Administration ("NHTSA") from other Hyundai Tucson owners for the model years 2005, 2006, 2007, 2012, 2013, 2019, and 2023 complaining of the same defect...
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Power Train, engine, fuel/propulsion System
01/07/2026
On January 7, 2026, shortly after delivery of a used 2015 Hyundai Tucson (VIN [XXX] ), the vehicle experienced immediate mechanical failure while being driven, resulting in sudden loss of power and drivability. Multiple warning lights illuminated on the dashboard at the time of failure. The vehicle became disabled and left the occupants stranded roadside in Fairhope, Alabama. The exact component that failed is UNKNOWN at this time. The failure appears related to the engine, powertrain, fuel/propulsion, and/or electrical systems. The vehicle was not operable after the incident. On January 8, 2026, the selling dealership (Sandy Sansing Nissan, Pensacola, Florida) towed the vehicle back to their dealership. The vehicle has remained in the dealership’s possession since that date and is available for inspection upon request. This sudden failure created a significant safety risk due to loss of propulsion while in traffic and exposure to roadside hazards. The problem has not been independ...