- Newest year: 2021
- Gas
- Midsize cars
- Same as 2020
2014-2021 Mazda6 MPG & Fuel Cost
8 model years · 26–32 MPG combined
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 6 of 10 midsize car configurations, MY2021. Ranked against all rated configurations, not sales-weighted.
2014-2021 Mazda6 at a glance
The 2014-2021 Mazda6 covers 8 model years in the EPA database (22 configurations in all), rated 26–32 MPG combined. The newest model year, 2021, costs about $2,220 a year to fuel for its most efficient version, the Mazda6 2.5L 4-cyl FWD (29 MPG), at regular gasoline $4.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2015, 2016, 2017, 2018, 2019 and 2020; 2021 repeat the values of the year before. The best combined rating in the generation, 32 MPG, was reached in 2014, 2015 and 2016.
2014-2021 Mazda6 by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2021 | Gas | 26–29 MPG | $2,220–$2,470 | Same EPA ratings as 2020 |
| 2020 | Gas | 26–29 MPG | $2,220–$2,470 | Ratings changed |
| 2019 | Gas | 26–29 MPG | $2,220–$2,470 | Ratings changed |
| 2018 | Gas | 26–29 MPG | $2,220–$2,470 | Ratings changed |
| 2017 | Gas | 28–30 MPG | $2,190–$2,330 | Ratings changed |
| 2016 | Gas | 29–32 MPG | $2,070–$2,260 | Ratings changed |
| 2015 | Gas | 29–32 MPG | $2,060–$2,280 | Ratings changed |
| 2014 | Gas | 29–32 MPG | $2,060–$2,250 | First year |
What the 2021 Mazda6 2.5L 4-cyl FWD costs to drive
Per month
$185
$2,220 a year ÷ 12
Per 25 miles
$3.70
Per 100 miles
$14.80
Five years
$11,100
5 × the yearly cost, prices held at today's level
vs the midsize car median
$380less a year
Class median $2,600 a year, MY2021
Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).
2021 Mazda6 MPG
EPA lists the same ratings for the 2021 Mazda6 as for the 2020 model, so the configurations and costs are the ones in the 2020 section above.See 2020
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl (Most efficient) | 2.5L 4-cyl | FWD | 26 | 35 | 29 | $2,220 |
| Mazda6 2.5L 4-cyl turbo | 2.5L 4-cyl turbo | FWD | 23 | 31 | 26 | $2,470 |
2020 Mazda6 MPG
26–29 MPG · $2,220–$2,470/yr
Versus 2019: The most efficient configuration stays at 29 MPG. Its annual cost stays at $2,220.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl (Most efficient) | 2.5L 4-cyl | FWD | 26 | 35 | 29 | $2,220 |
| Mazda6 2.5L 4-cyl turbo | 2.5L 4-cyl turbo | FWD | 23 | 31 | 26 | $2,470 |
2019 Mazda6 MPG
26–29 MPG · $2,220–$2,470/yr
Versus 2018: The most efficient configuration stays at 29 MPG. Its annual cost stays at $2,220.
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 26 | 35 | 29 | $2,220 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 24 | 33 | 27 | $2,420 |
| Mazda6 2.5L 4-cyl turbo | 2.5L 4-cyl turbo | FWD | 23 | 31 | 26 | $2,470 |
2018 Mazda6 MPG
26–29 MPG · $2,220–$2,470/yr
Versus 2017: The most efficient configuration moves from 30 to 29 MPG, down 1. Its annual cost goes from $2,190 to $2,220, $30 more.
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 26 | 35 | 29 | $2,220 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 24 | 33 | 27 | $2,420 |
| Mazda6 2.5L 4-cyl turbo | 2.5L 4-cyl turbo | FWD | 23 | 31 | 26 | $2,470 |
2017 Mazda6 MPG
28–30 MPG · $2,190–$2,330/yr
Versus 2016: The most efficient configuration moves from 32 to 30 MPG, down 2. Its annual cost goes from $2,070 to $2,190, $120 more.
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 27 | 35 | 30 | $2,190 |
| Mazda6 2.5L 4-cyl FWD Automatic (S6) | 2.5L 4-cyl | FWD | 26 | 35 | 29 | $2,240 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 24 | 34 | 28 | $2,330 |
2016 Mazda6 MPG
29–32 MPG · $2,070–$2,260/yr
Versus 2015: The most efficient configuration stays at 32 MPG. Its annual cost goes from $2,060 to $2,070, $10 more.
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 28 | 38 | 32 | $2,070 |
| Mazda6 2.5L 4-cyl FWD Automatic (S6) | 2.5L 4-cyl | FWD | 26 | 37 | 30 | $2,170 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 25 | 36 | 29 | $2,260 |
2015 Mazda6 MPG
29–32 MPG · $2,060–$2,280/yr
Versus 2014: The most efficient configuration stays at 32 MPG. Its annual cost stays at $2,060.
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 28 | 39 | 32 | $2,060 |
| Mazda6 2.5L 4-cyl FWD Automatic (S6) | 2.5L 4-cyl | FWD | 26 | 37 | 30 | $2,190 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 25 | 35 | 29 | $2,280 |
2014 Mazda6 MPG
29–32 MPG · $2,060–$2,250/yr
Gas configurations (3)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.5L 4-cyl FWD Automatic (S6) (Most efficient) | 2.5L 4-cyl | FWD | 28 | 39 | 32 | $2,060 |
| Mazda6 2.5L 4-cyl FWD Automatic (S6) | 2.5L 4-cyl | FWD | 26 | 37 | 30 | $2,180 |
| Mazda6 2.5L 4-cyl FWD Manual 6-spd | 2.5L 4-cyl | FWD | 25 | 36 | 29 | $2,250 |
Fuel cost by state
Yearly cost of the Mazda6 2.5L 4-cyl FWD: $3,020 in California and $1,940 in Texas, a $1,080 difference.
- California $3,020
- Washington $2,800
- New York $2,220
- Florida $2,100
- Texas $1,940
Similar cars
Closest combined MPG among MY2021 midsize car models.
Generations
- 2003-2008 (GG1)
- 2009-2013 (GH1)
- 2014-2021 (GJ1)
Frequently asked questions
What gas mileage does the 2014-2021 Mazda6 get?
EPA rates the 2014-2021 Mazda6 at 26–32 MPG combined across 22 configurations and 8 model years. The most efficient version, the 2016 Mazda6 2.5L 4-cyl FWD, is rated 32 MPG (28 city, 38 highway).
Which years had the best MPG in the 2014-2021 Mazda6?
The Mazda6 2.5L 4-cyl FWD reached the generation's best combined rating, 32 MPG, in 2014, 2015 and 2016. The lowest top rating, 29 MPG, was in 2018, 2019, 2020 and 2021.
Did EPA ratings change during the 2014-2021 Mazda6?
Yes. Ratings changed in 2015, 2016, 2017, 2018, 2019 and 2020. In 2021 the values repeat the year before.
How does the 2014-2021 Mazda6 compare with the previous generation?
The previous generation (2009-2013 Mazda6) is rated 20–25 MPG combined and costs $2,640–$3,270 a year to fuel; the 2014-2021 model is rated 26–32 MPG and costs $2,060–$2,470 a year.
How much does it cost to fuel a 2021 Mazda6 per year?
Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the Mazda6 2.5L 4-cyl FWD costs about $2,220 a year. Across all 2 configurations the cost runs $2,220–$2,470 a year. That is a $250 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2021 Mazda6 100 miles?
About $14.80 per 100 miles for the Mazda6 2.5L 4-cyl FWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $14.80 and $16.47 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2021 Mazda6 more efficient in the city or on the highway?
The Mazda6 2.5L 4-cyl FWD is rated 26 city and 35 highway MPG, so it is more efficient on the highway, by 9 MPG.
How does the 2021 Mazda6 compare with other midsize car configurations?
The Mazda6 2.5L 4-cyl FWD costs about $2,220 a year to fuel, $380 less than the class median of $2,600, and less than 6 of 10 midsize car configurations. The comparison covers all 149 rated midsize car configurations for MY2021, not weighted by sales.
Is the 2021 Mazda6 different from the 2020 model?
No. EPA lists the same ratings for 2020 and 2021: 2 configurations rated 26–29 MPG combined. See the 2020 Mazda6 for that year.