Pedal assembly supporting structure for automobile

In a supporting structure for a brake pedal assembly 8 pivotally mounted for rocking motion on the rear surface of a dash panel 1 of an automobile through a first bracket 2, a front portion of the first bracket 2 is fixed to the dash panel 1 and the rear end thereof is coupled to a second bracket 5, fastened to a cowl member 7 in a cabin, so as to be disengageable by the application of a load of automobile collision above a predetermined level. The brake pedal assembly 8 is pivotally mounted for rocking motion to the first bracket 2. At the lower end of the second bracket 5, a pedal lever stop 5b is provided which abuts against the rear end of the brake pedal assembly 8 when the first and second brackets 2, 5 are disengaged in an automobile collision so that the brake pedal assembly 8 moves backward. The brake pedal assembly 8 is restrained by abutment on the pedal lever stop 5b against backward movement. This ensures to prevent the brake pedal assembly 8 from moving backward in an automobile collision while providing a simple and highly reliable structure.