LIFT FOR MOTOR VEHICLES, of the type comprising two parallel platforms for supporting the vehicle wheels, each platform being provided with devices (100, 200) for lifting the platform itself, whereby each of the two lifting devices (100,200) is arranged symmetrically opposed, below the vehicle bearing plane, characterised in that each of the two lifting devices comprises: - a short lower lever arm hinged, by means of a pin, at the lower end to a base, by a sliding device and further hinged, by means of a pin to a long lower lever arm, in turn hinged, by means of a pin, to the base and wherein, always on said short lower lever arm, a pin, connecting said short lower lever arm to a rod and a pin, on which the control actuator is articulated; - an upper lever arm, located above the long and short lever arms (3,5), hinged at the end of the long lower lever arm, by means of the pin and further hinged at the upper end to the platform, by means of a hinge pin, and provides that - the rod, besides being hinged to the short lower lever arm, by means of a pin, is also hinged to the upper lever arm, by means of a pin, so as to form an articulated parallelogram, formed by the pair of opposite sides, constituted by the rod and by a section of the long lower lever arm, comprised between the pins (12, 13) and the pair of opposite sides constituted by the section of the short lower lever arm, comprised between the pins (12, 14) and by a section of the upper lever arm, comprised between the pins (13, 15), the lift being further characterized in that the pin, to which the long lower lever and the short lower lever are hinged, constitutes the vertex of an articulated structure shaped as an isosceles triangle, where the two equal sides are constituted by the sections comprised between the pins (10 and 12 respectively on one side and on the other side), while the base is defined by the pins (10, 11) and where the mutual distance of said pins (10, 11) takes variable lengths, depending on the height position taken by the platform, the lift being further characterized in that control actuators are positioned external to the corresponding parallelograms and they are hinged between the short lower lever arm and the upper lever arm, by means of the corresponding pins (16, 17), where an actuator is constrained to the short lower lever arm with pin and an actuator is constrained to the upper lever arm with pin. - a short lower lever arm hinged, by means of a pin, at the lower end to a base, by a sliding device and further hinged, by means of a pin to a long lower lever arm, in turn hinged, by means of a pin, to the base and wherein, always on said short lower lever arm, a pin, connecting said short lower lever arm to a rod and a pin, on which the control actuator is articulated; - an upper lever arm, located above the long and short lever arms (3,5), hinged at the end of the long lower lever arm, by means of the pin and further hinged at the upper end to the platform, by means of a hinge pin, and provides that - the rod, besides being hinged to the short lower lever arm, by means of a pin, is also hinged to the upper lever arm, by means of a pin, so as to form an articulated parallelogram, formed by the pair of opposite sides, constituted by the rod and by a section of the long lower lever arm, comprised between the pins (12, 13) and the pair of opposite sides constituted by the section of the short lower lever arm, comprised between the pins (12, 14) and by a section of the upper lever arm, comprised between the pins (13, 15),