Those are some great numbers, especially since the EPA says the Telluride should get 26 mpg on the highway. From what I've been seeing people haven't had a problem reaching 26mpg or better on the highway.
As for how cars calculate their mpg here are some interesting articles that might help.
- https://www.greencarreports.com/news/1090929_gas-mileage-displays-in-cars-accurate-or-optimistic
- https://www.caranddriver.com/news/a...ving-accurate-mpg-readings-and-how-to-fix-it/
Also, I hope you and your wife had a pleasant trip!
As for how cars calculate their mpg here are some interesting articles that might help.
- https://www.greencarreports.com/news/1090929_gas-mileage-displays-in-cars-accurate-or-optimistic
- https://www.caranddriver.com/news/a...ving-accurate-mpg-readings-and-how-to-fix-it/
Also, I hope you and your wife had a pleasant trip!