2012 Mazda 3 DI 5-DoorFuel Economy & MPG Ratings
Gasoline Midsize CarsFront-Wheel Drive
City
28
MPG
Highway
37
MPG
Combined
31
MPG
Real-World MPG
Based on 13 owner reports via EPA fueleconomy.gov
34.1MPG average+10.0% vs EPA label
EPA combined: 31 MPG · Owner reported avg: 34.1 MPG
Range: 29–42 MPG
Driving mix: City 45% / Highway 55%
Source: EPA fueleconomy.gov “Your MPG” owner submissions. Real-world results vary by driver behavior, conditions, and equipment.
Owner reported MPG for this vehicle averages 34.1 real world MPG based on 13 owner reports. EPA combined rating is 31 MPG.
Trim Comparison
Automatic (S6)
Regular
City
28
Hwy
37
Comb
31
Fuel cost: $2,200/yr
Manual 6-spd
Regular
City
26
Hwy
37
Comb
30
Fuel cost: $2,250/yr
| Trim | Engine | City | Hwy | Combined | Fuel Cost/yr |
|---|---|---|---|---|---|
| Automatic (S6) | Regular | 28 | 37 | 31 | $2,200 |
| Manual 6-spd | Regular | 26 | 37 | 30 | $2,250 |
Annual Fuel Cost
$2,200
Based on gasoline at $3.67/gal, 15,000 miles/year
5-Year Fuel Savings
$1,000
vs. average new vehicle
EPA Fuel Economy Score: -1/10
GHG Score: -1/10
Environment
- CO₂ Tailpipe Emissions
- 287 g/mile
- Annual Petroleum Consumption
- 9.6 barrels
Specifications
- Engine
- 2L 4-cyl
- Transmission
- 6-speed Manual
- Drivetrain
- FWD
- Body Style
- Sedan
- GVWR
- Class 1 (≤6,000 lbs)
Source: EPA fuel economy data & NHTSA vPIC. Specifications reflect the most common trim configuration.
Engine & Efficiency Details
Source: EPA fueleconomy.gov
- Engine Size
- 2L, 4-cylinder
- Induction Type
- Direct Injection
- Fuel Type
- Regular Gasoline
Annual Fuel Cost by State
Prices as of week ending May 18, 2026 · Source: EIA
National AvgEPA default
$4.490/gal$2,173/yr
California
$5.957/gal$2,882/yr
Texas
$3.888/gal$1,881/yr
Florida
$4.136/gal$2,001/yr
New York
$4.522/gal$2,188/yr
Ohio
$4.510/gal$2,182/yr
Washington
$5.591/gal$2,705/yr
Colorado
$4.618/gal$2,235/yr
Minnesota
$4.344/gal$2,102/yr
Massachusetts
$4.448/gal$2,152/yr
| State | Gas Price | Annual Cost | vs. National Avg |
|---|---|---|---|
| National AvgEPA default | $4.490/gal | $2,173/yr | — |
| California | $5.957/gal | $2,882/yrHIGHEST | +$709 |
| Texas | $3.888/gal | $1,881/yrLOWEST | $-292 |
| Florida | $4.136/gal | $2,001/yr | $-172 |
| New York | $4.522/gal | $2,188/yr | +$15 |
| Ohio | $4.510/gal | $2,182/yr | +$9 |
| Washington | $5.591/gal | $2,705/yr | +$532 |
| Colorado | $4.618/gal | $2,235/yr | +$62 |
| Minnesota | $4.344/gal | $2,102/yr | $-71 |
| Massachusetts | $4.448/gal | $2,152/yr | $-21 |
Calculated at 15,000 miles/year (EPA standard assumption) using 31 MPG combined. Regular gasoline prices. Actual costs vary.
Related
Mazda 3 DI 5-Door MPG History
See how this model's fuel economy changed by year