Disclosed herein is a vehicle broadband antenna that is an antenna for LTE & V2X installed in the vicinity of a crash pad of a vehicle. The crash pad broadband antenna is installed in the vicinity of a vehicle crash pad and includes a main PCB, an LTE low-band antenna pattern formed on the main PCB to transmit and receive an LTE low-band signal, a first sub-PCB having LTE high-band antenna patterns configured to transmit and receive an LTE high-band signal, the first sub-PCB being vertically coupled to the main PCB, and a first terminal connected to an external communication module for transmitting and receiving the signals to/from the LTE low-band antenna pattern and the LTE high-band antenna patterns. It is possible to overcome existing spatial limitations by applying the broadband antenna to the vehicle, and to significantly reduce the time required to manufacture and develop an existing mold.