A method to control the execution of a downshift while an accelerator pedal is released in a drivetrain provided with a dual-clutch, servo-assisted transmission, so as to downshift from a current gear to a following gear, which is lower than the current gear; the drivetrain comprises a dual-clutch, servo-assisted transmission having two primary shafts; at least one secondary shaft connected to drive wheels; and two clutches (16A, 16B), each interposed between a drive shaft of an internal combustion engine and a corresponding primary shaft; the control method comprises the steps of: opening, in a first instant (t 1), an outgoing clutch associated with the current gear; closing, in the first instant (t 1), an incoming clutch associated with the following gear; completing the opening of the outgoing clutch in a second instant (t 2); completing the closing of the incoming clutch in the second instant (t 2); synchronizing, between the second instant (t 2) and a third instant (t 3), a rotation speed (ω E) of the internal combustion engine with a rotation speed (ω B) of the incoming clutch, namely with the rotation speed (ω B) imposed by the gear ratio of the following gear; and controlling the incoming clutch between the second instant (t 2) and the third instant (t 3) so as to have the incoming clutch temporarily transmit a greater torque (T B) than the torque that the clutch is going to transmit immediately after the downshift and than the torque (T A) that the outgoing clutch transmitted immediately before the downshift in order to accelerate the internal combustion engine using the kinetic energy owned by a road vehicle provided with the drivetrain; the control method is characterized in that it comprises the further step of activating the internal combustion engine so as to generate a torque (T E) between the first instant (t 1) and a fourth instant (t 4), which is prior to the third instant (t 3). the drivetrain comprises a dual-clutch, servo-assisted transmission having two primary shafts; at least one secondary shaft connected to drive wheels; and two clutches (16A, 16B), each interposed between a drive shaft of an internal combustion engine and a corresponding primary shaft; the control method comprises the steps of: opening, in a first instant (t 1), an outgoing clutch associated with the current gear; closing, in the first instant (t 1), an incoming clutch associated with the following gear; completing the opening of the outgoing clutch in a second instant (t 2); completing the closing of the incoming clutch in the second instant (t 2); synchronizing, between the second instant (t 2) and a third instant (t 3), a rotation speed (ω E) of the internal combustion engine with a rotation speed (ω B) of the incoming clutch, namely with the rotation speed (ω B) imposed by the gear ratio of the following gear; and controlling the incoming clutch between the second instant (t 2) and the third instant (t 3) so as to have the incoming clutch temporarily transmit a greater torque (T B) than the torque that the clutch is going to transmit immediately after the downshift and than the torque (T A) that the outgoing clutch transmitted immediately before the downshift in order to accelerate the internal combustion engine using the kinetic energy owned by a road vehicle provided with the drivetrain; the control method is characterized in that it comprises the further step of activating the internal combustion engine so as to generate a torque (T E) between the first instant (t 1) and a fourth instant (t 4), which is prior to the third instant (t 3). opening, in a first instant (t 1), an outgoing clutch associated with the current gear; closing, in the first instant (t 1), an incoming clutch associated with the following gear; completing the opening of the outgoing clutch in a second instant (t 2); completing the closing of the incoming clutch in the second instant (t 2); synchronizing, between the second instant (t 2) and a third instant (t 3), a rotation speed (ω E) of the internal combustion engine with a rotation speed (ω B) of the incoming clutch, namely with the rotation speed (ω B) imposed by the gear ratio of the following gear; and controlling the incoming clutch between the second instant (t 2) and the third instant (t 3) so as to have the incoming clutch temporarily transmit a greater torque (T B) than the torque that the clutch is going to transmit immediately after the downshift and than the torque (T A) that the outgoing clutch transmitted immediately before the downshift in order to accelerate the internal combustion engine using the kinetic energy owned by a road vehicle provided with the drivetrain; the control method is characterized in that it comprises the further step of activating the internal combustion engine so as to generate a torque (T E) between the first instant (t 1) and a fourth instant (t 4), which is prior to the third instant (t 3).