Cox CXO300 300-HP Diesel Outboard Engine Tested

Designed for both recreational and commercial use, the 300-hp CXO300 is a new generation of diesel technology, offering high-torque diesel propulsion for the marine outboard market. While it has the same horsepower rating as 300-hp gas engines, that is the only similarity. At peak torque it has 39% more torque than a well-know 300-hp gas outboard. But, it delivers all of its torque and power when it is needed -- at low RPM -- to enable boats to get on plane quickly and stay there at far lower fuel consumption than a similar horsepower gas outboard.  Because it is so fuel stingy, the Cox diesel outboard has significantly greater range than any gas outboard engine.