We agree on one thing; gas mileage is important. On the car I traded in the Trip Mileage was real easy to use and made calculating MPG very easy. On my 2018 Highlander, I be damned if I can get the Trip Mileage A or B to actually work.
If snyone knows how to use Trip Mileages, PLEASE tell me. BTW the online user manual and the user manual that came with it are totally useless for this.