The invention relates to a crash-tolerant system arrangement in an engine compartment which is arranged in the front end region of a motor vehicle, comprising an internal combustion engine which is arranged in the engine compartment with an engine block (1), an exhaust-gas manifold (2) which receives exhaust gases of the internal combustion engine, an exhaust-gas turbocharger (3) which is assigned to the internal combustion engine with an exhaust-gas inlet (5) and an exhaust-gas outlet (6), and an exhaust-gas purification system (7) with a substantially cylindrical first catalytic-converter housing (9) which is arranged in front of the exhaust-gas turbocharger (3) in the driving direction (8) and in which a first exhaust-gas catalytic-converter element is arranged. Here, a first exhaust-gas guide element (10) is provided for guiding the exhaust gas from the exhaust-gas outlet (6) of the exhaust-gas turbocharger (3) to the first catalytic-converter housing (9), which first exhaust-gas guide element (10) extends from the exhaust-gas outlet (6) of the exhaust-gas turbocharger (3) to an inlet cone (11) of the first catalytic-converter housing (9) and can transmit a pressure force, which acts on the first catalytic-converter housing (9) substantially counter to the driving direction (8), at least partially to the exhaust-gas turbocharger (3). The exhaust-gas turbocharger (3) is connected mechanically by way of a first fastening device (12) to the exhaust-gas manifold (2) and by way of a second fastening device (13) to the engine block (1), wherein the first and the second fastening device (12, 13) are designed in such a way that a release of the connection of the exhaust-gas turbocharger (3) to the exhaust-gas manifold (2) and/or a release of the connection of the exhaust-gas turbocharger (3) to the engine block (1) take/takes place within a predefined upper value range for the pressure force.