I got the 15% oil life alert along with the A1(tire rotation) at 5,192 miles on 11/7/19. So factory oil lasted me a little over 13 months from the manufacture date. Scheduled my oil change at Honda dealership for next Wednesday. $90 for the full synthetic oilInteresting that you're still at 30% oil life. Since we're both low mileage drivers, I thought yours would trigger first since your build date was September (mine was October). However, you picked up your car in December later than I did (October), so maybe that explains the time-based oil life difference...?
I've been averaging 62 mpg, but temperatures are starting to drop. It will be hard for me to decouple how much upcoming mpg difference is due to 'natural' temperature difference (-25% hit?) and post-oil change fuel efficiency.