What is the mpg on a typical 5hp outboard motor?

Question

I am looking at a 14' Jon boat and a 5hp Briggs & Stratton outboard motor. Total weight of the boat, with passengers and gas will be about 450 lbs. If I'm using about 2/3 to 3/4 of the throttle, how much gas is this engine going to consume per mile/per hour? Thanks for any help!

Answer 1

The speed of a boat depends more on the length and shape of the hull than on the power of the motor.

You need to follow the answers specifying fuel consumption per hour, not per mile.  

Answer 2

I have a 1456 triton flat bottom> with a 15HP johnson> It planes with 2 at 20 mph> seems like your idea will be a bit better than oars> Don't think you would be happy unless you like slow> You will use more gas per distance than my 15>And take for ever to get there>

Answer 3

Marine motors and other applications of power units are measured by operating hours, not miles.  A typical five hp motor might get one or two hours per gallon.

Answer 4

all will depend on the above water air resistance of the boat, underwater drag, how heavily laden the boat is,the pitch of the prop and any headwind; for starters.

Answer 5

The best answer is 2 1/2 gal. per hour of  running time,  the speed of the boat will be maybe 8 even 10 MPH. Good luck!