Subaru STI Gas Mileage (2015 - 2019): Comprehensive Fuel Economy Data

The Subaru STI gas mileage is 18 to 20 miles per gallon as specified in our data below, organized by trim, option package, and model year.

For example, the 2019 Subaru STI S209 2.5T trim model has a combined gas mileage of 18 miles per gallon, while the 2016 Subaru STI WRX STI has a combined gas mileage of 20 miles per gallon.

In the city, the STI gas mileage is 15 to 17 miles per gallon depending on the trim and model year.

On the highway, the STI gas mileage is 21 to 23 miles per gallon depending on the trim and model year.

Note: The gas mileage shown for hybrid vehicles is the miles per gallon equivalent.

Check out the Gas Mileage specifications for other makes and models.

2019 Subaru STI Gas Mileage

The 2019 Subaru STI gas mileage is 18 miles per gallon combined.

In the city, the 2019 STI gas mileage is 15 miles per gallon.

On the highway, the 2019 STI gas mileage is 21 miles per gallon.

2016 Subaru STI Gas Mileage

The 2016 Subaru STI gas mileage is 20 miles per gallon combined.

In the city, the 2016 STI gas mileage is 17 miles per gallon.

On the highway, the 2016 STI gas mileage is 23 miles per gallon.

2015 Subaru STI Gas Mileage

The 2015 Subaru STI gas mileage is 20 miles per gallon combined.

In the city, the 2015 STI gas mileage is 17 miles per gallon.

On the highway, the 2015 STI gas mileage is 23 miles per gallon.