Vehicle bumper including a spoiler hinged between three positions of stable equilibrium

A motor vehicle bumper which comprises a shield and a spoiler hinged between two positions of stable equilibrium, namely a high position in which it projects at least in part downwards from the shield, and a low position in which it extends the bumper in a downward direction, wherein:

• the bumper includes a return device continuously stressing the spoiler upward,
• the bumper includes an abutment which limits the upward stroke of the spoiler, said abutment being suitable for preventing the spoiler from passing from its high position toward a third position of stable equilibrium referred to as a “retracted” position, in which it is fully retracted behind the shield, and
• the spoiler is suitable for moving past the abutment to adopt its retracted position.