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
I don't track city driving as it is too variable as my driving and traffic conditions are never the same. Straight highway driving at 70 mph is very consistent and never less than 45 mpg and it will climb as high as 49 mpg on a good hot day, the hotter the better it seems.