2010 Subaru Legacy 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 2010 Subaru Legacy AWD.
The 2010 Subaru Legacy AWD has 4 model options: Manual 6-spd 4-cyl, 2.5 L, Automatic (S5) 6-cyl, 3.6 L, Manual 6-spd 4-cyl, 2.5 L and Automatic (variable gear ratios) 4-cyl, 2.5 L.
The 2010 Subaru Legacy AWD Manual 6-spd 4-cyl, 2.5 L runs on regular gasoline and is in the Midsize Cars car class.
The 2010 Subaru Legacy AWD Automatic (S5) 6-cyl, 3.6 L runs on regular gasoline and is in the Midsize Cars car class.
The 2010 Subaru Legacy AWD Manual 6-spd 4-cyl, 2.5 L runs on premium gasoline and is in the Midsize Cars car class.
The 2010 Subaru Legacy AWD Automatic (variable gear ratios) 4-cyl, 2.5 L runs on regular gasoline and is in the Midsize Cars car class.
🛣 How Many Miles per Gallon (MPG) Does a 2010 Subaru Legacy AWD Get?
Across all models, the combined average MPG for the 2010 Subaru Legacy AWD is 22 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Manual 6-spd 4-cyl, 2.5 L | 22 | 19 | 27 |
| Automatic (S5) 6-cyl, 3.6 L | 20 | 18 | 25 |
| Manual 6-spd 4-cyl, 2.5 L | 21 | 18 | 25 |
| Automatic (variable gear ratios) 4-cyl, 2.5 L | 26 | 23 | 31 |
💵 What is the Average Yearly Fuel Cost for a 2010 Subaru Legacy AWD?
The average fuel costs for all models of the 2010 Subaru Legacy AWD is $2,975.
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 2010 Subaru Legacy AWD to an average vehicle over 5 years, you will spend $3,375 more on fuel.
The table below shows the fuel costs and 5-year save/spend for each model option:
| Model Option | Fuel Cost | 5-Year Save/Spend |
|---|---|---|
| Manual 6-spd 4-cyl, 2.5 L | $2,850 | spend $2,750 more |
| Automatic (S5) 6-cyl, 3.6 L | $3,150 | spend $4,250 more |
| Manual 6-spd 4-cyl, 2.5 L | $3,500 | spend $6,000 more |
| Automatic (variable gear ratios) 4-cyl, 2.5 L | $2,400 | spend $500 more |
🛢 How Many Barrels of Petroleum Does a 2010 Subaru Legacy AWD Consume?
Across all models, the average number barrels of petroleum that the 2010 Subaru Legacy AWD will consume in one year is 14 barrels.
The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.
| Model Option | Barrels |
|---|---|
| Manual 6-spd 4-cyl, 2.5 L | 14 |
| Automatic (S5) 6-cyl, 3.6 L | 15 |
| Manual 6-spd 4-cyl, 2.5 L | 14 |
| Automatic (variable gear ratios) 4-cyl, 2.5 L | 11 |
💨 How Many Grams of CO2 Does a 2010 Subaru Legacy AWD Emit?
The 2010 Subaru Legacy AWD will emit an average of about -15,000 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 1 tree would be needed to offset emissions from the 2010 Subaru Legacy AWD.
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 4 2010 Subaru Legacy AWD model options.
Manual 6-spd 4-cyl, 2.5 L
The table below contains all of the details we have for the 2010 Subaru Legacy AWD Manual 6-spd 4-cyl, 2.5 L:
| City MPG | 19 |
|---|---|
| Highway MPG | 27 |
| Combined MPG | 22 |
| Save/Spend vs Average Car | Spend $2,750 |
| Fuel Cost | $2,850 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 14 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | All-Wheel Drive |
| Cylinders | 4 |
| Displacement | 2.5 |
| Transmission | Manual 6-spd |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic (S5) 6-cyl, 3.6 L
The table below contains all of the details we have for the 2010 Subaru Legacy AWD Automatic (S5) 6-cyl, 3.6 L:
| City MPG | 18 |
|---|---|
| Highway MPG | 25 |
| Combined MPG | 20 |
| Save/Spend vs Average Car | Spend $4,250 |
| Fuel Cost | $3,150 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 15 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | All-Wheel Drive |
| Cylinders | 6 |
| Displacement | 3.6 |
| Transmission | Automatic (S5) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Manual 6-spd 4-cyl, 2.5 L
The table below contains all of the details we have for the 2010 Subaru Legacy AWD Manual 6-spd 4-cyl, 2.5 L:
| City MPG | 18 |
|---|---|
| Highway MPG | 25 |
| Combined MPG | 21 |
| Save/Spend vs Average Car | Spend $6,000 |
| Fuel Cost | $3,500 |
| Fuel Type 1 | Premium |
| Barrels of Petroleum | 14 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | All-Wheel Drive |
| Cylinders | 4 |
| Displacement | 2.5 |
| Transmission | Manual 6-spd |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | Yes |
Automatic (variable gear ratios) 4-cyl, 2.5 L
The table below contains all of the details we have for the 2010 Subaru Legacy AWD Automatic (variable gear ratios) 4-cyl, 2.5 L:
| City MPG | 23 |
|---|---|
| Highway MPG | 31 |
| Combined MPG | 26 |
| Save/Spend vs Average Car | Spend $500 |
| Fuel Cost | $2,400 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 11 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | All-Wheel Drive |
| Cylinders | 4 |
| Displacement | 2.5 |
| Transmission | Automatic (variable gear ratios) |
| Vehicle Class | Midsize Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/subaru/legacy-awd/2010">2010 Subaru Legacy AWD MPG and Fuel Economy</a>
"2010 Subaru Legacy AWD MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/subaru/legacy-awd/2010.
"2010 Subaru Legacy AWD MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/subaru/legacy-awd/2010. Accessed January 3, 2026.
2010 Subaru Legacy AWD MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/subaru/legacy-awd/2010.