Answer is Car !!Some linguistics (study of languages): An engine in this context is usually, scientifically a "heat engine", a machine that transforms energy of some form to mechanical work (motion energy) via heat, at least in the classic sense of a machine (in modern language, modern engines and machines may not be mechanical at all, they work similar or the description is just used an analogy, producing some kind of virtual flow or stream, like "search engine").
The electric motor does not go via heat, and the main reason it's so much more energy efficient than an ICE.
Most European languages, not English, use the same word for motor and rotational engine, and we sometimes use the wrong English word, like "petrol motor". Hence, the steam engine, is never called a "motor", rather as a direct translation of "steam machine" (rotation regarded to created outside of the engine itself).
Question, for native English speakers: When not knowing what kind engine/motor/machine that propels a car, what common word is best used for it?
Motor.Question, for native English speakers: When not knowing what kind engine/motor/machine that propels a car, what common word is best used for it?