Sounds about right I think. I have the FR TFSI and get around 380 miles to a tank (the computer says I average about 33mpg, last time I looked).
But I have a long commute and try to drive economically most of the time. Around town and in heavy traffic, I sometimes struggle to get >20mpg. If you only/mainly do urban driving, you should expect far less to a full tank.
I love the silky smooth power from my TFSI, but I think next time I'll be back to a diesel purely on cost grounds...