Exhaust system, especially for an internal combustion engine of a vehicle, comprising a mixer assembly unit with a mixer body with an inflow side and with an outflow side and with a plate-like carrier element with a carrier element body arranged radially outwards in relation to the mixer body relative to a mixer longitudinal axis (L) adapted ring-like, wherein the mixer body comprises a plurality of flow deflection elements and at least one holding area , wherein the carrier element comprises, in association with at least one holding area , a counter-holding area , wherein at least one counter-holding area is connected in substance to a holding area , wherein the mixer assembly unit is arranged in a junction area in which two tubular exhaust gas guide elements adjoin one another, wherein each of the exhaust gas guide elements comprises in the junction area a flange-like coupling section for coupling with the coupling section of the respective other exhaust gas guide element , wherein the carrier element body of the mixer assembly unit is arranged between the flange-like coupling sections of the exhaust gas guide elements , characterized in that - at least one counter-holding area extends over a holding area on a side oriented in the direction of the outflow side of the mixer body at least partially radially and axially radially inwards, - that the at least one counter-holding area comprises an essentially U-shaped holding section with two U-legs and a connection area connecting these, wherein the U-legs and the connection area border a holding area receiving space , which is open essentially in the direction of the inflow side of the mixer body , - that one of the U-legs is arranged radially outwards in relation to the holding area arranged in the holding area receiving space , that one of the U-legs is arranged radially inwards in relation to the holding area arranged in the holding area receiving space , and that the holding area is connected to the U-leg arranged radially inwards in relation to this holding area, and - that a coupling element is provided, which encloses the flange-like coupling sections in at least some areas radially outwards and extends over them on their axial sides oriented facing away from one another radially inwards. - at least one counter-holding area extends over a holding area on a side oriented in the direction of the outflow side of the mixer body at least partially radially and axially radially inwards, - that the at least one counter-holding area comprises an essentially U-shaped holding section with two U-legs and a connection area connecting these, wherein the U-legs and the connection area border a holding area receiving space , which is open essentially in the direction of the inflow side of the mixer body , - that one of the U-legs is arranged radially outwards in relation to the holding area arranged in the holding area receiving space , that one of the U-legs is arranged radially inwards in relation to the holding area arranged in the holding area receiving space , and that the holding area is connected to the U-leg arranged radially inwards in relation to this holding area, and - that a coupling element is provided, which encloses the flange-like coupling sections in at least some areas radially outwards and extends over them on their axial sides oriented facing away from one another radially inwards. <EOS>