A motor vehicle forecarriage (8) comprising a forecarriage frame (16), a pair of front wheels (10', 10") kinematically connected to the forecarriage frame (16) by means of an articulated quadrilateral comprising a pair of cross members, hinged to the forecarriage frame (16) in correspondence of middle hinges, said cross members being connected together, in correspondence of opposite transverse ends, by means of uprights pivoted to said transverse ends in correspondence of side hinges, each of the uprights guides and supports a stub axle of a front wheel (10', 10") mechanically connected to a rotation pin of the front wheel (10', 10"), each upright extending from an upper end to a lower end, and wherein each rotation pin of the front wheel (10', 10") is comprised between the upper end and the lower end of the corresponding upright.