Our 2002 282 Sailfish burn with F225 four strokes, clean bottom, light to moderate load, will cruise at 26 knots, 14-15gph, so better than 1.5mpg (typically we bump around the bay at 1.6-1.7mpg) up to about 30 knots. I've never actually seen more than 2mpg sustained, and that's intermittent...