At predominantly 85, absolutely! To get 25 you're going to have to slow down to the 75-80mph range. You can use the instantaneous readout to guide you, as your average will generally be about 5mpg lower than the highest sustained reading you have while cruising. So if you want to average 25, your instantaneous needs to be around 30. As you slow your speed from 85 to 80 to 75 you'll see that instantaneous slowly creep up. For your trip in Texas where the speed limits are higher, 21 is to be expected.

 

Speed between 70 and 85 is what killed your fuel economy. 65-70 you should be able to get 25+. I average about 27 at those speeds. At 85, you're pushing what is a two and a quarter ton brick through the air at great cost.

 

Check this out:

Mpg For Speed - Fuel Efficiency Vs. Speed

Learn about how your speed affects your car's fuel mileage. Use our calculator to see the difference.

www.mpgforspeed.com

 

Don't Give Jimmy Carter any new ideas.

 

Double nickel.

 

1. The dashboard calculation is an estimate at best.
2. Fill the tank and do the math. And keep doing it over many months. Then calculate your mileage for all the gas consumed over the extended range of miles.

 

I got 27.5 mpg in my 2022 touring - also buy Mobile/Chevron Reg Gas, it has the additives. You will not get great MPG in any SUV at over 80mph including in the Forester. Here the speed limit is 70 mph so I go about 78 max. Would I prefer to go faster on the interstate - YES.

This trip was 400 miles. 80 miles on Interstate 75 in flat Florida, and 320 miles on Highway 70 and 98, going 70mph top speed, but also thru a few small cities but as you can tell mostly rural Florida farm lands.