If you're doing 50/50 city/Hwy you are getting 3 MPG above the Combined MPG that our cars are rated for which is 30MPG. I do 50/50 as well and am getting about 31.5MPG average but my last 10 fillups average over 33MPG though. You're getting great numbers actually.I'm averaging about 33 MPG according to Fuelly, since my first fill-up 4800 miles ago. A little less than I hoped for, but I could probably improve the number by driving a little leaner. I'm right around 50/50 city/hwy and its usually just myself or 1 passenger. My commutes involve many hills that probably also negatively affect my economy.