Engine vs Motor

When to use each in English, with meaning, register, and examples.

Engine

Top 1,000 (very common)A2noun

Motor

Top 1,000 (very common)B2noun
 EngineMotor
Pronunciation🇬🇧 /["/ˈendʒɪn/"]/🇺🇸 /["/ˈendʒɪn/"]/🇬🇧 /["/ˈməʊtə(r)/"]/🇺🇸 /["/ˈməʊtər/"]/
MeaningA machine that makes something move or work.A machine that makes something move.
ExampleThe engine of the car makes a loud noise when it starts.The motor in my car is making a strange noise.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelA2B2
Part of speechnounnoun
Collocationsbig, powerful, small, crank, crank up, fire, run, idle, tick over, capacity, power, speed, in an/​the engine, be powered by a… engine, the noise, roar, sound, etc. of the engine, large, powerful, diesel, build, driver, shedlarge, powerful, small, start, turn on, turn off, run, work, drive something
Antonymsfailure, stopbrake, stop
Common mistakesConfused with 'engineer'., Using 'engine' when referring to a vehicle instead of the machine inside., Mispronouncing the word, especially the 'g' sound.Confused with 'moter', a common misspelling., Used incorrectly as a verb; 'motor' is a noun., Misunderstood as referring only to electric motors, while it includes other types.
Usage notesCommonly used in everyday contexts like cars or machines. Not typically used in formal documents unless discussing technical subjects.Used when talking about machines, vehicles, or engines. Not typically used in very formal contexts, but acceptable in everyday conversation.

Frequently asked questions: Engine vs Motor

What's the difference between Engine and Motor?

Engine: A machine that makes something move or work. Motor: A machine that makes something move.

Are Engine and Motor the same CEFR level?

Engine: A2, Motor: B2 on the CEFR scale.

Can I use Engine and Motor interchangeably?

Not always. Engine and Motor are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

Related comparisons