well i filled up this morning, two weeks after my last fill up. working from home really helps. I avgd 14.18 with the last tank and it was about 98% city driving. It's going up with each tank, hopefully it will peak at at 14.5 or better. I paid exactly $3 more using 89 over 87. Took a little over 19 gl to fill up so i still had about 6 gls left.