One of the chief measures used to reduce fuel consumption and thus CO2 emissions is to reduce the swept volume, typically in combination with turbocharging, in order to maintain or improve power output and torque. As the degree of turbocharging increases, the necessity of cooling the compressed air grows simultaneously. Charge air cooling therefore takes on an ever more critical role. The latest stage of development at MAHLE includes indirect cascaded charge air cooling, integrated in the intake pipe, which provides minimal pressure loss and significant packaging advantages. It produces charge air temperatures close to that of the coolant by using a two-stage cooling process.