My old 1.3L GD average 6.5L/100ks in urban areas (not city, but still reasonably busy). Went down to ~4L on the highway, best i saw was 3.5L
New 1.5L GE gets nowhere near that, averaging 7.8L doing the same urban runs, haven't really gone on a long highway trip w/ it yet.

This is with Vortex 98. Definitely get better mileage and more power with the 98 than 95 or E10.