A motor-driven vehicle for cleaning surfaces, comprising: an internal service compartment; a tank; a high pressure group mounted in the service compartment and having a washing conduit extending externally of the vehicle for supplying, in outlet, a high pressure washing liquid; an aspirating group of liquids and solids mounted in the service compartment and having a aspiration conduit extending externally of the vehicle; a cleaning organ manually mobile by an user on a surface to be cleaned to which an outlet end of the washing conduit is connected for spraying the liquid at high pressure towards the surface to be cleaned and/or an inlet end of air from the aspiration conduit for aspirating liquids and solids present on the surface to be cleaned; characterized in that it comprises a boiler for heating the washing liquid connected to the tank, for heating the washing liquid to a preset temperature; and a generator of electric current operatively connected to a motor for moving the vehicle in order to pick up the movement from the motor and generate electric current; the generator of electric current being connected to the aspirating group and to the high pressure group in order to supply the said groups (10, 5) with electricity; said service compartment being mounted on the same frame on which the motor of the vehicle is mounted; the cleaning organ being mobile between a rest position in which it is positioned inside the service compartment and an operating position in which it is positioned outside the service compartment at a surface to be cleaned; said generator being configured so as to power the high pressure group and the aspirating unit simultaneously; said cleaning organ comprising a hood positioned at the surface to be cleaned; the outlet end of the washing conduit and the air inlet end of the aspirating conduit being connected internally of the hood; the high pressure unit and the aspirating group being configured such as to operate simultaneously so as to realise a jet of liquid and aspiration below the hood. an internal service compartment; a tank; a high pressure group mounted in the service compartment and having a washing conduit extending externally of the vehicle for supplying, in outlet, a high pressure washing liquid; an aspirating group of liquids and solids mounted in the service compartment and having a aspiration conduit extending externally of the vehicle; a cleaning organ manually mobile by an user on a surface to be cleaned to which an outlet end of the washing conduit is connected for spraying the liquid at high pressure towards the surface to be cleaned and/or an inlet end of air from the aspiration conduit for aspirating liquids and solids present on the surface to be cleaned; characterized in that it comprises a boiler for heating the washing liquid connected to the tank, for heating the washing liquid to a preset temperature; and a generator of electric current operatively connected to a motor for moving the vehicle in order to pick up the movement from the motor and generate electric current; the generator of electric current being connected to the aspirating group and to the high pressure group in order to supply the said groups (10, 5) with electricity; said service compartment being mounted on the same frame on which the motor of the vehicle is mounted; the cleaning organ being mobile between a rest position in which it is positioned inside the service compartment and an operating position in which it is positioned outside the service compartment at a surface to be cleaned; said generator being configured so as to power the high pressure group and the aspirating unit simultaneously; said cleaning organ comprising a hood positioned at the surface to be cleaned; the outlet end of the washing conduit and the air inlet end of the aspirating conduit being connected internally of the hood; the high pressure unit and the aspirating group being configured such as to operate simultaneously so as to realise a jet of liquid and aspiration below the hood.