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Are Four-Strokes More Efficient Than Two-Strokes?

We put this outboard myth to the test.

November 16, 2012

Myth: Four-stroke outboards are more fuel-efficient than two-strokes.

You’ve got to burn fuel to make horsepower. Comparisons are often made between older, carbureted two-strokes and newer fuel-injected four-strokes. In those cases, the enhanced economy comes from the fuel delivery system, not from the number of revolutions in a power cycle. Compare modern two-strokes like Evinrude’s E-Tec outboards to modern four-strokes, and the difference is too close to call. Check our boat test database and see for yourself. ****

Myth: Busted

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Watch the video linked below for a detailed explanation from Karl Sandstrom, product manager for BRP’s Evinrude Outboard Division, comparing two-stroke and four-stroke outboards.

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](http://www.evinrudenation.com/reviews/the-fuel-duel-are-4-strokes-more-efficient-than-2-strokes/)
**_The Fuel Duel: Are 4-Strokes More Efficient Than 2-Strokes_**

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