A crawled vehicle for the preparation of ski pistes, in particular a snowgroomer vehicle; the crawled vehicle comprising: - an internal combustion engine; - an engine compartment wherein the internal combustion engine is housed; - an air inlet opening to catch air from the outside of the crawled vehicle; - a first channel connected and fed by the air inlet opening with air coming from outside the crawled vehicle; - a second channel for hot air, preferably connected to the engine compartment, to be fed with hot air coming from the internal combustion engine; - a third channel for air, coupled to the internal combustion engine to feed the internal combustion engine with air; - an air filter arranged along the third channel and upstream of the internal combustion engine; - a connection element connected to the first channel, to the second channel and third channel; and - an air adjusting device to adjust the air temperature in the third channel and comprising a shutter coupled to the first channel and/or to the second channel and/or to the connection element; and a control device controlling a position of the shutter to adjust the temperature of the air entering the third channel, wherein the crawled vehicle comprises a turbine arranged along the third channel between the air filter and the internal combustion engine; and a cooler arranged along the third channel between the turbine and the internal combustion engine; and wherein the control device comprises a third temperature sensor arranged between the cooler and the internal combustion engine for measuring a third temperature of the air exiting the cooler; the control device being configured to adjust a position of the shutter, preferably by means of an actuator, on the basis of the third temperature measured. - an internal combustion engine; - an engine compartment wherein the internal combustion engine is housed; - an air inlet opening to catch air from the outside of the crawled vehicle; - a first channel connected and fed by the air inlet opening with air coming from outside the crawled vehicle; - a second channel for hot air, preferably connected to the engine compartment, to be fed with hot air coming from the internal combustion engine; - a third channel for air, coupled to the internal combustion engine to feed the internal combustion engine with air; - an air filter arranged along the third channel and upstream of the internal combustion engine; - a connection element connected to the first channel, to the second channel and third channel; and - an air adjusting device to adjust the air temperature in the third channel and comprising a shutter coupled to the first channel and/or to the second channel and/or to the connection element; and a control device controlling a position of the shutter to adjust the temperature of the air entering the third channel, wherein the crawled vehicle comprises a turbine arranged along the third channel between the air filter and the internal combustion engine; and a cooler arranged along the third channel between the turbine and the internal combustion engine; and wherein the control device comprises a third temperature sensor arranged between the cooler and the internal combustion engine for measuring a third temperature of the air exiting the cooler; the control device being configured to adjust a position of the shutter, preferably by means of an actuator, on the basis of the third temperature measured.