A vehicular turning indicator is used for automatically showing a turning degree of a vehicle. The vehicular turning indicator includes a sensor sensing a turning angle of the vehicle; a control device asserting a control signal according to the turning direction, the turning angle and optionally the speed of the vehicle; and a plurality of lightening units in communication with the control device brightening to constitute a variable pattern in response to the control signal. The vehicular turning indicator can be implemented by currently existent vehicular lamps such as indicator light, brake light or head-up display, be incorporated into an existent vehicular accessory such as rearview mirror module or auxiliary brake light module, or independently mounted to the vehicle. Preferably, special flashing effects are performed to make the turning indication prominent.