2026 Toyota Corolla Cross Transmission and drivetrain Problems

“on the freeway after around 10 miles a vibration starts at 70mph and up to 80mph, it gets worse, its from the rear, you can feel it in the steering, through the floor, and seat, over 80 the whole car is one constant resonating vibration, tires have been replaced and conformed ok. Toyota are not doing anything to resolve the issue, and will not drive it as I request, and will not invite me to drive along with them.”

“The contact owns a 2026 Toyota Corolla Cross. The contact stated that while driving at various speeds, the vehicle failed to immediately accelerate while depressing the accelerator pedal. The contact stated that the failure had occurred while driving up an incline and while driving on a flat road surface. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The manufacturer was not yet contacted. The failure mileage was 4,100.”

“Front end vibrates and floats around at highway speeds. Vibration through the floor from the rear. rear of the vehicle steps out and wanders with weight in the vehicle causing passengers to get concerned. tires have been replaced, no change to front or rear or handling.”

“The component that has malfunctioned is the hybrid inverter assembly, a loose internal bolt within the hybrid propulsion system. This vehicle is currently held at Fred Haas Toyota Country (Houston, TX) and is available for inspection upon request. My safety and the safety of the public are at risk because, as stated by the recall notice given on December 16 2025, this defect involves a bolt in the hybrid powertrain that can become loose and could lead to a loss of motive power or could lead to a fire when the vehicle is on. …”

“The vehicle has experienced intermittent loss of power/acceleration when taking off from a stop. When the accelerator pedal is pressed, the vehicle sometimes does not accelerate normally or has substantially reduced power. This creates a safety concern because the vehicle may not accelerate as expected when entering or crossing traffic or in other situations where predictable acceleration is necessary. This has been happening off and on for several month. Around the same time, the vehicle's fuel economy decreased significantly. …”