I had a 2.3L Mazda 5, averaged 9.5 L/100km overall. My 100% urban trips would be in the 10-11 range, and downtown it would be as bad as 13. On the highway, I'd be down at 6.5 to 8.0. I got it down to 6 late at night going home from hockey a few times, doing 80 on the highway (construction speed limit).
My Skyactiv 3 does 7-8 in 100% urban trips, 10 downtown, 4.5 to 6.0 on the highway.