2018 Subaru Forester AWD MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 2018 Subaru Forester AWD.

The 2018 Subaru Forester AWD has 3 model options: Manual 6-spd 4-cyl, 2.5 L, Automatic (AV-S6) 4-cyl, 2.5 L and Automatic (AV-S8) 4-cyl, 2.0 L.

The 2018 Subaru Forester AWD Manual 6-spd 4-cyl, 2.5 L runs on regular gasoline and is in the Small Sport Utility Vehicle 4WD car class.

The 2018 Subaru Forester AWD Automatic (AV-S6) 4-cyl, 2.5 L runs on regular gasoline and is in the Small Sport Utility Vehicle 4WD car class.

The 2018 Subaru Forester AWD Automatic (AV-S8) 4-cyl, 2.0 L runs on premium gasoline and is in the Small Sport Utility Vehicle 4WD car class.

🛣 How Many Miles per Gallon (MPG) Does a 2018 Subaru Forester AWD Get?

Across all models, the combined average MPG for the 2018 Subaru Forester AWD is 26 miles per gallon.

The table below breaks down the MPG for each model option:

Model OptionCombined MPGCity MPGHighway MPG
Manual 6-spd 4-cyl, 2.5 L242228
Automatic (AV-S6) 4-cyl, 2.5 L282632
Automatic (AV-S8) 4-cyl, 2.0 L252327

💵 What is the Average Yearly Fuel Cost for a 2018 Subaru Forester AWD?

The average fuel costs for all models of the 2018 Subaru Forester AWD is $2,600.

The average fuel costs have been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

Comparing a 2018 Subaru Forester AWD to an average vehicle over 5 years, you will spend $1,500 more on fuel.

The table below shows the fuel costs and 5-year save/spend for each model option:

Model OptionFuel Cost5-Year Save/Spend
Manual 6-spd 4-cyl, 2.5 L$2,600spend $1,500 more
Automatic (AV-S6) 4-cyl, 2.5 L$2,250save $250
Automatic (AV-S8) 4-cyl, 2.0 L$2,950spend $3,250 more

🛢 How Many Barrels of Petroleum Does a 2018 Subaru Forester AWD Consume?

Across all models, the average number barrels of petroleum that the 2018 Subaru Forester AWD will consume in one year is 12 barrels.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.

Model OptionBarrels
Manual 6-spd 4-cyl, 2.5 L12
Automatic (AV-S6) 4-cyl, 2.5 L11
Automatic (AV-S8) 4-cyl, 2.0 L12

💨 How Many Grams of CO2 Does a 2018 Subaru Forester AWD Emit?

The 2018 Subaru Forester AWD will emit an average of about 5,210,000 grams of CO2 per year.

🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 178 trees would be needed to offset emissions from the 2018 Subaru Forester AWD.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 3 2018 Subaru Forester AWD model options.

Manual 6-spd 4-cyl, 2.5 L

The table below contains all of the details we have for the 2018 Subaru Forester AWD Manual 6-spd 4-cyl, 2.5 L:

City MPG22
Highway MPG28
Combined MPG24
Save/Spend vs Average CarSpend $1,500
Fuel Cost$2,600
Fuel Type 1Regular
Barrels of Petroleum12
Grams of CO25,520,000
Trees Needed to Offset263
DriveAll-Wheel Drive
Cylinders4
Displacement2.5
TransmissionManual 6-spd
Vehicle ClassSmall Sport Utility Vehicle 4WD
Start/Stop?No
Supercharged?No
Turbocharged?No

Automatic (AV-S6) 4-cyl, 2.5 L

The table below contains all of the details we have for the 2018 Subaru Forester AWD Automatic (AV-S6) 4-cyl, 2.5 L:

City MPG26
Highway MPG32
Combined MPG28
Save/Spend vs Average CarSave $250
Fuel Cost$2,250
Fuel Type 1Regular
Barrels of Petroleum11
Grams of CO24,725,000
Trees Needed to Offset225
DriveAll-Wheel Drive
Cylinders4
Displacement2.5
TransmissionAutomatic (AV-S6)
Vehicle ClassSmall Sport Utility Vehicle 4WD
Start/Stop?No
Supercharged?No
Turbocharged?No

Automatic (AV-S8) 4-cyl, 2.0 L

The table below contains all of the details we have for the 2018 Subaru Forester AWD Automatic (AV-S8) 4-cyl, 2.0 L:

City MPG23
Highway MPG27
Combined MPG25
Save/Spend vs Average CarSpend $3,250
Fuel Cost$2,950
Fuel Type 1Premium
Barrels of Petroleum12
Grams of CO25,385,000
Trees Needed to Offset256
DriveAll-Wheel Drive
Cylinders4
Displacement2
TransmissionAutomatic (AV-S8)
Vehicle ClassSmall Sport Utility Vehicle 4WD
Start/Stop?No
Supercharged?No
Turbocharged?Yes

Link To or Reference This Page

If you use this page in your research, please reference MPG Buddy as the source.

  • "2018 Subaru Forester AWD MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/subaru/forester-awd/2018.

  • "2018 Subaru Forester AWD MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/subaru/forester-awd/2018. Accessed January 3, 2026.

  • 2018 Subaru Forester AWD MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/subaru/forester-awd/2018.