Efficiency: Four-stroke engines are more efficient than two-stroke engines because they allow for a more complete combustion of fuel. In a four-stroke engine, the fuel is mixed with air and compressed before being ignited, which allows for a more complete burn and greater power output. Two-stroke engines, on the other hand, do not have a separate compression stroke, which results in less complete combustion and lower efficiency.
Emissions: Four-stroke engines produce fewer emissions than two-stroke engines because they allow for better control of the combustion process. The separate intake, compression, combustion, and exhaust strokes in a four-stroke engine allow for more efficient use of fuel and better control of emissions. Two-stroke engines, on the other hand, produce more emissions because the combustion process is less controlled and more fuel is wasted.
