Exhaust gas guide system for an internal combustion engine, comprising: - an upstream, first exhaust gas guide pipe area, - a downstream, second exhaust gas guide pipe area adjoining the first exhaust gas guide pipe area in a transition area in an exhaust gas flow direction, - a liquid drain channel area in the transition area, which channel area is open from an exhaust gas flow volume in the first exhaust gas guide pipe area or/and in the second exhaust gas guide pipe area to a liquid collection volume, wherein the second exhaust gas guide pipe area is expanded upstream towards its upstream end area with a cylindrical shape in at least one direction transversely to the exhaust gas flow direction and wherein in the transition area a circular downstream end area of the first exhaust gas guide pipe area with a cylindrical shape engages the upstream end area of the second exhaust gas guide pipe area with a cylindrical shape, wherein the liquid drain channel area comprises an interspace formed between the circular downstream end area of the first exhaust gas guide pipe area with a cylindrical shape and the upstream end area of the second exhaust gas guide pipe area, wherein - the second exhaust gas guide pipe area with its end region with a cylindrical shape has a flattened round circumferential contour, - the intermediate space is formed with a crescent shape in a circumferential region between an outer surface of the circular downstream end region adapted with a cylindrical shape of the exhaust gas guiding pipe area and an inner surface of the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area, and in another circumferential area the circular downstream end region of the first exhaust gas guide pipe area and the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area abut at each other and are fixedly connected to each other by welding or/and press fit. - an upstream, first exhaust gas guide pipe area, - a downstream, second exhaust gas guide pipe area adjoining the first exhaust gas guide pipe area in a transition area in an exhaust gas flow direction, - a liquid drain channel area in the transition area, which channel area is open from an exhaust gas flow volume in the first exhaust gas guide pipe area or/and in the second exhaust gas guide pipe area to a liquid collection volume, wherein the second exhaust gas guide pipe area is expanded upstream towards its upstream end area with a cylindrical shape in at least one direction transversely to the exhaust gas flow direction and wherein in the transition area a circular downstream end area of the first exhaust gas guide pipe area with a cylindrical shape engages the upstream end area of the second exhaust gas guide pipe area with a cylindrical shape, wherein the liquid drain channel area comprises an interspace formed between the circular downstream end area of the first exhaust gas guide pipe area with a cylindrical shape and the upstream end area of the second exhaust gas guide pipe area, wherein - the second exhaust gas guide pipe area with its end region with a cylindrical shape has a flattened round circumferential contour, - the intermediate space is formed with a crescent shape in a circumferential region between an outer surface of the circular downstream end region adapted with a cylindrical shape of the exhaust gas guiding pipe area and an inner surface of the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area, and in another circumferential area the circular downstream end region of the first exhaust gas guide pipe area and the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area abut at each other and are fixedly connected to each other by welding or/and press fit. - the second exhaust gas guide pipe area with its end region with a cylindrical shape has a flattened round circumferential contour, - the intermediate space is formed with a crescent shape in a circumferential region between an outer surface of the circular downstream end region adapted with a cylindrical shape of the exhaust gas guiding pipe area and an inner surface of the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area, and in another circumferential area the circular downstream end region of the first exhaust gas guide pipe area and the upstream end region adapted with a cylindrical shape of the second exhaust gas guide pipe area abut at each other and are fixedly connected to each other by welding or/and press fit.