- Newest year: 2008
- Gas
- Midsize cars
2003-2008 Mazda6 MPG & Fuel Cost
6 model years · 19–24 MPG combined
15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 8 of 10 midsize car configurations, MY2008. Ranked against all rated configurations, not sales-weighted.
2003-2008 Mazda6 at a glance
The 2003-2008 Mazda6 covers 6 model years in the EPA database (34 configurations in all), rated 19–24 MPG combined. The newest model year, 2008, costs about $2,720 a year to fuel for its most efficient version, the Mazda6 2.3L 4-cyl FWD (24 MPG), at regular gasoline $4.36/gal (U.S. average, Sep 2026). EPA changed the ratings in 2004, 2005, 2006 and 2008; 2007 repeat the values of the year before. The best combined rating in the generation, 24 MPG, was reached in 2003, 2004, 2006, 2007 and 2008.
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
2003-2008 Mazda6 by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2008 | Gas | 20–24 MPG | $2,720–$3,270 | Ratings changed |
| 2007 | Gas | 19–24 MPG | $2,720–$4,230 | Same EPA ratings as 2006 |
| 2006 | Gas | 19–24 MPG | $2,720–$4,230 | Ratings changed |
| 2005 | Gas | 20–23 MPG | $2,840–$3,270 | Ratings changed |
| 2004 | Gas | 19–24 MPG | $2,720–$3,440 | Ratings changed |
| 2003 | Gas | 20–24 MPG | $2,720–$3,270 | First year |
What the 2008 Mazda6 2.3L 4-cyl FWD costs to drive
Per month
$227
$2,720 a year ÷ 12
Per 25 miles
$4.53
Per 100 miles
$18.13
Five years
$13,600
5 × the yearly cost, prices held at today's level
vs the midsize car median
$770less a year
Class median $3,490 a year, MY2008
Based on 15,000 miles a year and regular gasoline $4.36/gal (U.S. average, Sep 2026).
2008 Mazda6 MPG
Versus 2007: The most efficient configuration stays at 24 MPG. Its annual cost stays at $2,720.
Gas configurations (4)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl FWD Manual 5-spd (Most efficient) | 2.3L 4-cyl | FWD | 21 | 29 | 24 | $2,720 |
| Mazda6 2.3L 4-cyl FWD Automatic (S5) | 2.3L 4-cyl | FWD | 21 | 28 | 24 | $2,720 |
| Mazda6 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Mazda6 3.0L 6-cyl FWD Automatic (S6) | 3.0L 6-cyl | FWD | 18 | 25 | 20 | $3,270 |
2007 Mazda6 MPG
Same EPA ratings as 2006
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
EPA lists the same ratings for the 2007 Mazda6 as for the 2006 model, so the configurations and costs are the ones in the 2006 section above.See 2006
2006 Mazda6 MPG
19–24 MPG · $2,720–$4,230/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2005: The most efficient configuration moves from 23 to 24 MPG, up 1. Its annual cost goes from $2,840 to $2,720, $120 less.
Gas configurations (7)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl FWD Manual 5-spd (Most efficient) | 2.3L 4-cyl | FWD | 21 | 29 | 24 | $2,720 |
| Mazda6 2.3L 4-cyl FWD Automatic (S5) | 2.3L 4-cyl | FWD | 21 | 28 | 23 | $2,840 |
| Mazda6 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Mazda6 3.0L 6-cyl FWD Automatic (S6) | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Sport Wagon 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Sport Wagon 3.0L 6-cyl FWD Automatic (S6) | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
Show 0 more configurations
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl turbo | 2.3L 4-cyl turbo | 4WD | 17 | 23 | 19 | $4,230 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2005 Mazda6 MPG
20–23 MPG · $2,840–$3,270/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2004: The most efficient configuration moves from 24 to 23 MPG, down 1. Its annual cost goes from $2,720 to $2,840, $120 more.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl FWD Manual 5-spd (Most efficient) | 2.3L 4-cyl | FWD | 21 | 28 | 23 | $2,840 |
| Mazda6 2.3L 4-cyl FWD Automatic (S4) | 2.3L 4-cyl | FWD | 20 | 26 | 22 | $2,970 |
| Mazda6 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 24 | 20 | $3,270 |
| Mazda6 3.0L 6-cyl FWD Automatic (S6) | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Sport Wagon 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 24 | 20 | $3,270 |
| Sport Wagon 3.0L 6-cyl FWD Automatic (S6) | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
2004 Mazda6 MPG
19–24 MPG · $2,720–$3,440/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Versus 2003: The most efficient configuration stays at 24 MPG. Its annual cost stays at $2,720.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl FWD Manual 5-spd (Most efficient) | 2.3L 4-cyl | FWD | 21 | 29 | 24 | $2,720 |
| Mazda6 2.3L 4-cyl FWD Automatic (S4) | 2.3L 4-cyl | FWD | 20 | 26 | 22 | $2,970 |
| Mazda6 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 24 | 20 | $3,270 |
| Sport Wagon 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 24 | 20 | $3,270 |
| Mazda6 3.0L 6-cyl FWD Automatic (S5) | 3.0L 6-cyl | FWD | 17 | 24 | 19 | $3,440 |
| Sport Wagon 3.0L 6-cyl FWD Automatic (S5) | 3.0L 6-cyl | FWD | 17 | 24 | 19 | $3,440 |
2003 Mazda6 MPG
20–24 MPG · $2,720–$3,270/yr
EPA re-estimated ratings of 1985-2007 vehicles under its 2008 method; these figures are the re-estimated values.
Gas configurations (4)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| Mazda6 2.3L 4-cyl FWD Manual 5-spd (Most efficient) | 2.3L 4-cyl | FWD | 22 | 29 | 24 | $2,720 |
| Mazda6 2.3L 4-cyl FWD Automatic (S4) | 2.3L 4-cyl | FWD | 20 | 26 | 22 | $2,970 |
| Mazda6 3.0L 6-cyl FWD Manual 5-spd | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
| Mazda6 3.0L 6-cyl FWD Automatic (S5) | 3.0L 6-cyl | FWD | 17 | 25 | 20 | $3,270 |
Fuel cost by state
Yearly cost of the Mazda6 2.3L 4-cyl FWD: $3,700 in California and $2,370 in Texas, a $1,330 difference.
- California $3,700
- Washington $3,430
- New York $2,720
- Florida $2,570
- Texas $2,370
Similar cars
Closest combined MPG among MY2008 midsize car models.
Generations
- 2003-2008 (GG1)
- 2009-2013 (GH1)
- 2014-2021 (GJ1)
Frequently asked questions
What gas mileage does the 2003-2008 Mazda6 get?
EPA rates the 2003-2008 Mazda6 at 19–24 MPG combined across 34 configurations and 6 model years. The most efficient version, the 2008 Mazda6 2.3L 4-cyl FWD, is rated 24 MPG (21 city, 29 highway).
Which years had the best MPG in the 2003-2008 Mazda6?
The Mazda6 2.3L 4-cyl FWD reached the generation's best combined rating, 24 MPG, in 2003, 2004, 2006, 2007 and 2008. The lowest top rating, 23 MPG, was in 2005.
Did EPA ratings change during the 2003-2008 Mazda6?
Yes. Ratings changed in 2004, 2005, 2006 and 2008. In 2007 the values repeat the year before.
How much does it cost to fuel a 2008 Mazda6 per year?
Driving 15,000 miles a year at regular gasoline $4.36/gal (U.S. average, Sep 2026), the Mazda6 2.3L 4-cyl FWD costs about $2,720 a year. Across all 4 configurations the cost runs $2,720–$3,270 a year. That is a $550 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2008 Mazda6 100 miles?
About $18.13 per 100 miles for the Mazda6 2.3L 4-cyl FWD at regular gasoline $4.36/gal (U.S. average, Sep 2026), and between $18.13 and $21.80 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2008 Mazda6 more efficient in the city or on the highway?
The Mazda6 2.3L 4-cyl FWD is rated 21 city and 29 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2008 Mazda6 compare with other midsize car configurations?
The Mazda6 2.3L 4-cyl FWD costs about $2,720 a year to fuel, $770 less than the class median of $3,490, and less than 8 of 10 midsize car configurations. The comparison covers all 158 rated midsize car configurations for MY2008, not weighted by sales.
Is the 2008 Mazda6 different from the 2007 model?
The most efficient configuration stays at 24 MPG. Its annual cost stays at $2,720. EPA lists 4 configurations for 2008 against 7 configurations for 2007. See the 2007 Mazda6 for that year.