Subaru Ascent 2025 Mileage. With gas mileage up to 26 mpg** and over 500 miles of highway driving range, the 2025 ascent delivers competitive gas mileage to take you further. For a complete list of all the 2025 ascent specs, features and options check out.

Fuel economy of the 2025 subaru ascent. Brick through the air other than adding electric motors and a battery.