I get just over 30mpg combined, majority around town though. I live in the hills, so even my normal freeway miles are not really sip compatible. That and I enjoy keeping the car above 3K rpm so it is responsive. I also have the Hondata 250ft-lb tune.
I guess I'm getting more enthusiastic the past few weeks, as I'm at around 29-30 combined. Actually very little highway miles. My previous '19 Sport 6MT was about 33-34, and the Si was doing that for the first few months.
I get an average of 30mpg. I live in NJ and commute to NY. I also drive it like I stole it and don't concern myself with mpg. I sold my truck to get the Si so I'm getting double what I was before. Win win in my book