A vehicle deceleration display system includes a serial data bus operable for communicating a plurality of sequentially-measured vehicle speed datums in a respective sequential manner. A control unit is operatively connected to the serial data bus and is operable for receiving and processing the vehicle speed data therefrom. The control unit is programmed to sequentially calculate vehicle deceleration values respectively corresponding with the sequential speed data to provide a variable output signal. The variable output signal corresponds with and varies in accordance with the sequential vehicle deceleration values. A variable display is connected to the control unit and varies in response to the deceleration values. A method of calculating and displaying vehicle deceleration values is also provided.