After buying the GPS device, you must be wondering the best place to put a GPS tracker in a car. Perhaps, you can install the GPS tracker anywhere on the car or fleet vehicle on the rear or front bumper. Moreover, the secret and safe places are alloy wheels, under the seats, or glove boxes. However, placing a GPS tracker under a car's dashboard is ideal, as it is near the onboard diagnostics port and connected well. Thus, setting it under the dashboard and connecting with the OBD port would be the best idea if you want to see car diagnostic reports.