Best ive gotten is 25.2 MPG on a 350 mile trip with 4 passengers and luggage, easily attainable on one fill up. My daily commute, I avg 13MPG, city driving, usually no WOT involve either. My computer says 15.5 MPG,
My 18 Sport was usually off by 2-2.5 MPG as well. Similar MPG between both on city but on the highway, my Platinum wins it by far.