An electro-hydraulic actuation group for an automotive servo-assisted mechanical transmission, the electro-hydraulic actuation group comprising an actuation unit, a power unit designed to provide hydraulic pressure to the actuation unit and an electronic control unit; the power unit comprising first components (8, 9, 10, 11) including a pump and an electric motor, which is designed to operate the pump and is provided with a first electrical connector, and the actuation unit comprising a hydraulic casing, second components (16, 20, 21, 22, 24, 34) provided with second electrical connectors (33, 22b, 36, 35), and a hydraulic circuit fluidically connected to the pump to supply, in use, a fluid under pressure to the second components (16, 20, 21, 22); the hydraulic casing comprising a first and a second shell (30, 31), which are rigidly connected to each other and define at least part of said hydraulic circuit therebetween; the first shell having an outer surface located on the side of the hydraulic casing facing away from the second shell; and the second components (16, 20, 21, 22) comprise electro-hydraulic valves, which are configured to actuate respective servo-assisted members of the transmission, are housed in respective seats provided on said outer surface of the first shell and are fitted with respective second electrical connectors; a sensor module carried by the second shell and fitted with a respective second electrical connector; and a pressure sensor, which is associated to an outlet of one of the electro-hydraulic valves, is carried by the first shell and is fitted with a respective second electrical connector; the electro-hydraulic actuation group being characterised in that the first and the second components (8, 9, 10, 11, 16, 20, 21, 22, 24, 34) all are directly mounted on the hydraulic casing so as to define a single assembly; and the first and second electrical connectors (44, 33, 22b, 36, 35) are arranged such that they can all be engaged by a same multiple electrical connector device, which is mounted on said outer surface of the first shell in a removable manner and is provided with an electrical input/output interface for the electrical connection of the actuation unit and the power unit with the electronic control unit; wherein the first and the second components (8, 9, 10, 11, 16, 20, 21, 22, 24, 34) are arranged on the hydraulic casing such that the first and the second electrical connectors (44, 33, 22b, 36, 35) are all facing the same way and extend in their respective directions parallel to each other and to a direction of coupling with a multiple electrical connector device; the seats of said electro-hydraulic valves extending in respective directions parallel to each other and to a direction of assembly of the electro-hydraulic valves parallel to the direction of coupling; wherein the second components (16, 20, 21, 22, 24, 34) comprise a feed filter that is mounted on the first shell beneath the pump and has an inlet directly coupled to a delivery side of the pump,-and an outlet on the first shell and fluidically communicating with a feed line of the hydraulic circuit; and the first components (8, 9, 10, 11) comprise a suction filter, which is mounted on the first shell beneath the pump and is arranged at the side of, and parallel to, the feed filter and has an outlet that is directly coupled to a suction inlet of the pump and an inlet that is directly coupled to an opening obtained on the first shell and communicating in a fluidic manner with a discharge line of the hydraulic circuit; the suction filter and feed filter being arranged to extend transversal to said direction of assembly.