My 2019 Accord Touring 2.0T is finally starting to put up some halfway decent gas mileage at 20k miles! Still, my overall mileage on Fuelly is right around 23.5mpgs.
Unless you drive like a grandma, you won’t pull down better than 28 or so in mixed driving, and at a constant 80mph in 10th, even in ECON, you’ll be lucky to crack 30 with the A/C blowing ice cubes, and sadly maybe 31 at best without it.
For contrast, my 2013 Accord Touring V6 would routinely hit mid-30s at 80mph with the A/C blasting (and verified by calculating the mileage on Fuelly at the next fillup), and on one road trip where I was pacing traffic in the slow lane at about 70mph while waiting for another member of the group I was in to catch up, no A/C, I saw an indicated 42mpg!