With warmed up summertime temperatures but not warm enough to run the AC some days. The 28 mpg was some highway from the day before. My commute is 8 miles each way and usually see 23-24, bit today it dropped down to 27 and then returned to 28 mpg! Crazy efficient!
Impressive, I think for most of us, even just 5 years ago it was hard to imagine fuel economy being like this in a SUV/Van/Crossover. Often car makers don't set the bar too high on first or second year models so maybe by time the Envision is ready for a mid-cycle refresh we'll see it break into the low 30's.
You're definitely winning this mpg race and getting some great numbers. Considering the break-in period is over, I can't really see it getting too much better than that though? You're already getting much better than what the manufacturer specifies at 20-22/26-29 mpg (city - highway)