Hi, I,m new here, and looking for some info. I am getting ready to buy a 2013 Tracker V18 Targa, and would like to know how much difference there is in fuel consumption between the Merc. 115 HP 4 stroke and the 150 HP 4 stroke. Can't seem to find anything on this subject, would be great if someone could shed a little light on this for me. Thanks...