A vehicular navigation apparatus may include: an input unit configured to receive an image; a display unit configured to display at least one of a navigation image and an input image; and a controller configured to receive the image from the input unit and to control operation of the display unit. Upon receiving the image from the input unit, the controller may be configured to extract a resolution of the input image and to determine whether the resolution of the input image is less than or equal to a reference resolution, and when the resolution of the input image is less than or equal to the reference resolution, the controller may be configured to control the operation of the display unit so as to simultaneously display the navigation image and the input image.