Quiz: What is the primary difference between a two-stroke engine a March 29, 2025 by Alex Turner What is the primary difference between a two-stroke engine and a four-stroke engine? Discover more about Vehicle Engine and Automobile at our home page. A) A two-stroke engine completes a power cycle in two strokes of the piston, while a four-stroke engine completes it in four strokes. B) A two-stroke engine uses more fuel than a four-stroke engine. C) A two-stroke engine requires more maintenance than a four-stroke engine. D) A two-stroke engine has a higher displacement than a four-stroke engine. Submit Answer