This is a fishbone diagram listing some potential problems when the car is not able to start. If your car cannot start, you can go can check six aspects, which are the environment, machine, measurement, material, method, and the driver. A broken down fuel system, low temperature, key lost, incorrect fuel in the tank, hardware issue, locked car, and untrained or intoxicated driver can all result in the not started car. You can find this template on EdrawMax and design a fishbone diagram easily.
