2023 Subaru Legacy AWD (2.5L 4-cyl) MPG & Specs
Quick answer
The 2023 Subaru Legacy AWD gets an EPA-estimated 27/35 MPG (city/highway) and 30 MPG combined, with an estimated $2,050/year fuel cost and 295 g/mi CO₂. Engine: 2.5 L 4-cyl.
The 2023 Subaru Legacy AWD with the 2.5-liter 4-cylinder regular gasoline engine returns an EPA-estimated 27 MPG in the city and 35 MPG on the highway, for a combined 30 MPG. This page summarizes the official EPA fuel-economy and emissions data for this configuration.
| Engine | 2.5 L 4-cyl |
| Transmission | Automatic (AV-S8) |
| Drive | All-Wheel Drive |
| Fuel type | Regular Gasoline |
| Vehicle class | Large Cars |
| MPG — city | 27 |
| MPG — highway | 35 |
| MPG — combined | 30 |
| Annual fuel cost* | $2,050 |
| CO₂ tailpipe | 295 g/mi |
| EPA GHG score | 6/10 |
How efficient is it?
With a combined 30 MPG, the 2023 Subaru Legacy AWD sits in the good range for fuel economy. That is about 15% better than the typical Large Cars of its era (26 MPG class average), making it one of the more efficient choices in its class.
Fuel economy and running costs
At about $2,050 per year in fuel (EPA estimate, 15,000 mi/yr), fuel is a major part of the cost of owning the 2023 Subaru Legacy AWD. Over five years that is roughly $10,250 at today's prices — before insurance, maintenance, and depreciation.
Emissions
The 2023 Subaru Legacy AWD emits approximately 295 grams of CO₂ per mile at the tailpipe, earning an EPA greenhouse-gas score of 6 out of 10. Lower emissions generally track higher fuel economy.
How to read these numbers
EPA figures come from standardized laboratory test cycles and are the same estimates shown on the vehicle's window sticker. Your real-world mileage depends on driving style, conditions, fuel grade, and maintenance. Use combined MPG and annual fuel cost to compare vehicles fairly.