Motor vehicle brake or clutch pedal

A motor vehicle brake or clutch pedal comprising a two part blade with a first blade part (1) adapted at one end (3) to carry a foot pad, and a second blade part (2) adapted to be connected to a push rod of an operating mechanism of either a brake booster or a clutch, with means (13) to disconnect, or to render ineffective, the connection between the second blade part (2) and the push rod in a frontal crash situation of sufficient magnitude. The invention also includes a motor vehicle incorporating at least one such pedal.