So, some not so common information. An engine is a fuel driven mechanical device, size and fuel type don’t really matter, models use very small engines, trucks and equipment use much larger engines. A motor, is an electrical winding, yes most vehicles have motors, but, usually not for drive. Most motors on a vehicle would be a starter or an alternator, or generator, or even the heater fan drive motor. Even if your vehicle uses a motor for power to the wheels, it is still a motor, and not an engine.