the mutually engaging profilings or maxima 9 and minima 10 the distances a between the maxima 9 and the minima 10 directly adjacent to the maxima 10 measured in circumferential direction of the pipeline 1 are preferably 1 to 20 u03bcm and very preferably 5 to 15 u03bcm it can be seen especially in fig2 that the profiled surfaces 4 2 5 1 5 2 and 6 1 are very preferably configured with undulated cross section in the exemplary embodiment a more or less irregular wave structure is thus obtained the central barrier layer 5 may be made from ethylene vinyl alcohol copolymer evoh in the exemplary embodiment the adhesive layers 4 6 attached thereto are adhesive layers 4 6 based on polyamide the thickness of the central barrier layer 5 is preferably 0 1 to 0 2 mm and for example 0 15 mm in the exemplary embodiment the thickness of the adhesive layers is preferably 0 2 mm to 0 1 mm preferably 0 03 mm to 0 07 mm and for example 0 05 mm in the exemplary embodiment the layers of the multilayered motor vehicle pipeline according to the present disclosure are made from thermoplastic material according to a preferred embodiment of the present disclosure it is within the scope of the present disclosure that the multilayered motor vehicle pipeline according to the present disclosure is produced by means of coextrusion fig4 shows the cross section of an extruder 11 for such a coextrusion wherein surfaces profiled according to the present disclosure of a layer can be produced with this extruder 11 for this purpose the extruder 11 has an annular.