4 stroke engine

2 stroke engine

Low torque

High torque

Tough to manufacture and engines are costlier due to lubrication and valve.

Simple to manufacture and engines are cheap

More wear and tear happens because of poor lubrication

Wear and tear are less

Speed can be varied from high to low

High speed engine are mostly available

Operates in only one direction

Operates in both direction (anti clockwise direction and clockwise direction)