Oh, not bad. This is also about 80% city driving too.

 

I get 14 city and 15-18 highway in my 04 heritage.

 

well I have a pretty straight answer for you. I took a trip to Austin yesterday, and this is how I did mileage wise. 70 mph a/ AC on, and a 5-7 mph headwind. On the way back I averaged about 68 mph with only vent air and got 20 mpg even!! All this is with a fuel filter that has needed to be changed for a few months now. LOL

I will report back later.