2025 head-to-head · Midsize Car
2025 Mazda 3 vs Subaru Legacy
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.10/gal regular gas, the most efficient 2025 Mazda 3 (31 MPG) costs about $1,500 a year to fuel and the 2025 Subaru Legacy (30 MPG) about $1,550.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Mazda 3
- Subaru Legacy
Side by side
| Mazda 3 | Subaru Legacy | |
|---|---|---|
| $1,500 | Your annual fuel cost | $1,550 |
| 31 MPG | Combined efficiency | 30 MPG |
| 27 MPG | City | 27 MPG |
| 37 MPG | Highway | 35 MPG |
| 93 cu ft | Passenger volume | 105 cu ft |
| 13 cu ft | Cargo volume | 15 cu ft |
| 287 g/mi | Tailpipe CO₂ (g/mi) | 295 g/mi |
| 6/10 | EPA fuel economy score | 6/10 |
| 6/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.5L 4-cyl | Engine / motor | 2.5L 4-cyl |
| 6-speed automatic | Transmission | CVT |
| FWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Mazda 3 vs Subaru Legacy across model years
- Mazda 3
- Subaru Legacy
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Subaru Legacy has more passenger space (105 vs. 93 cu ft); the Subaru Legacy has more cargo space (15 vs. 13 cu ft).
Among 42 2025 midsize cars, the Mazda 3 ranks 18th and the Subaru Legacy 19th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2025 Mazda 3 or the 2025 Subaru Legacy?
Measured by cost to drive, the Mazda 3. The Mazda 3 is rated 31 MPG combined and the Subaru Legacy 30 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Mazda 3 vs. the Subaru Legacy per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,500 for the Mazda 3 and $1,550 for the Subaru Legacy.
Which has more cargo space?
The Subaru Legacy, with 15 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
Mazda 3 vs Subaru Legacy in other years
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