Transmission Path Analysis is a test-based analysis method. This method used in the automotive industry allows us to determine the ways in which vibro-acoustic energy is emitted from the source. The transmission of sound from the source to the receiver at a certain point takes place by structural or airway. Goal; To determine the contribution of each energy transmission path transferred from the source to the receiver to the vibration and noise of the vehicle. With the TPA test, it can be determined which transmission route needs to be improved and the design of the vehicle can be optimized to provide the desired characteristics.