The 150 horsepower engine delivers some of the most advanced technology ever seen in an outboard. It boasts VTEC Technology that delivers more power, torque and efficiency at every speed. Combined with Honda's exclusive Lean Burn Feedback, which automatically adjusts the air/fuel mix according to speed and load to maximize fuel efficiency, you get an engine that delivers more power with less fuel. And to insure long term durability, Honda engineers designed a Three Way Cooling System. The cylinder head runs slightly cooler than the cylinder block, greatly reducing engine wear. Expect awesome power, less refueling, and far less maintenance over many boating seasons. Honda's 150 hp is 2.4 liters based on the same engine that powers the incredibly reliable Honda Accord, CR-V and Element