Mazda · Midsize cars · Gasoline
Mazda 6: MPG and annual fuel cost, 2021
The Mazda 6 was last rated in the data for model year 2021, at 29 MPG combined.
- 29MPG combined
- $2,300a year in fuel
- 302g/mile CO2
Where it stands
Across every class it is 3rd of 19 gasoline models, in the top quarter, ahead of 89% of the others.
Fuel cost and CO2
Assuming 15,000 miles a year with 55% of them in the city and regular gasoline at $4.47 per gallon, fuelling the most efficient version comes to about $2,300 a year.
Tailpipe CO2 is 302 g/mile for the most efficient version.
Rated versions
In the city the most efficient version is rated 26 and on the highway 35, 9 better on the open road. 2 versions are rated for 2021. The most efficient, 6: 2.5 L, 4 cyl, Automatic (S6), FWD, gets 29 MPG; the least efficient listed, 6: 2.5 L, 4 cyl, Automatic (S6), FWD (version 2), gets 26 MPG, a gap of 3 MPG. With the file's assumptions that gap is worth about $300 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| 6: 2.5 L, 4 cyl, Automatic (S6), FWD | 29 | 26 | 35 | $2,300 | 302 |
| 6: 2.5 L, 4 cyl, Automatic (S6), FWD (version 2) | 26 | 23 | 31 | $2,600 | 335 |
Year by year
The Mazda 6 is in the data for 3 of the 8 model years from 2019 to 2026. Its best combined rating is 29 MPG in both 2019 and 2021. The number of rated versions shrank from 3 to 2.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2021 | 2 | 29 | 26 | $2,300 | 302 | 28.5 |
| 2020 | 2 | 29 | 26 | $2,300 | 302 | 28 |
| 2019 | 3 | 29 | 26 | $2,300 | 302 | 29 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Honda Clarity Plug-in hybrid | Plug-in hybrid | 42 | $1,600 | 2021 |
| Hyundai Ioniq Electric | Electric | 133 | $550 | 2021 |
Compare and rank
Rankings: Midsize cars.
Data: US EPA and DOE, as prepared in methods and data.