2003 GTP, 110k miles does 18 city and 30ish highway. Driving home from Platteville towards Milwaukee, through Madison, got me 25.5 DIC reading with stupid amounts of snow, wind, 30 degree weather, 4 eagle 077 rims w/tires, and all my stuff from school. Oh and my tires were rather under inflated. Oops. As a note, US 151 is NOT a flat road lol.
I love my GP =)