Techniques for controlling pedal-off downshifts of a vehicle transmission

A method for performing a gear shift of a transmission of a vehicle, the method comprising:

• receiving, by a controller and from a turbine shaft speed sensor, a rotational speed of a turbine shaft of the transmission;
• receiving, by the controller and from an output shaft speed sensor, a plurality of rotational speeds of an output shaft of the transmission;
• determining, by the controller, a shift time modifier based on the turbine shaft speed and a gradient of the output shaft speed;
• modifying, by the controller, a shift time for a pedal-off downshift of the transmission based on the shift time modifier to obtain a modified shift time;
• and
• controlling, by the controller, the pedal-off downshift of the transmission based on the modified shift time so as to achieve a smoother and consistent pedal-off downshift operation as compared to other transmission downshift operations of the vehicle without such control.