Method for controlling a supercharged internal combustion engine

A method for controlling a supercharged internal combustion engine (1), in particular by means of a turbocharger (12) provided with a turbine (13) and a compressor (14); the control method comprises determining a target supercharging pressure (Ptmin) capable of guaranteeing the target torque (Ci obj); determining an actual supercharging pressure (Pobj), higher than the target supercharging pressure (Ptmin); determining an actual supercharging reserve (RDS) to be used in case of an increase of requested target torque (Ci_obj) and equal to the difference between the actual supercharging pressure (Pobj) and the target supercharging pressure (Ptmin); and controlling the supercharged internal combustion engine (1) as a function of the actual supercharging reserve (RDS).