Abstract: The exhaust system is suitable for both gasoline and diesel engines, whether used for vehicle propulsion or in permanently installed power transmissions, and controls emission by trapping the solid matter and unburned hydrocarbons that escape with the exhaust gases using serviceable filters accommodated in an elongated hollow outer case (6,61) sealed at either end by removable caps (7) with axial fittings (10) that connect with the front and rear sections of the exhaust pipe (2,4); the space encompassed by the case (6) is split into two chambers (13,14) of different volume by a baffle (15), one side of which supports a housing (16) designed to contain one or more removable filter elements (19), and at the same time, to combine with the inside wall of the case (6) in creating a void (20) that communicates with the smaller chamber (13) by way of openings formed in the baffle (15).