Sorry, I’m not a native speaker and so far I thought engine and motor to be synonyms in context of cars. But if you google it doesn’t seem to be completely wrong. It’s just uncommon like that.

Can we call an electric motor an electric engine? That really sounds wrong, doesn’t it? According to the current definitions in the English language of “motor” and “engine, calling an electric propulsion device an engine is completely acceptable as well. You won’t find us doing that any time soon, however.

https://www.electrifiedmag.com/news/motor-vs-engine-whats-the-difference-and-why-does-it-matter/