2003 · Midsize Car · Gas
2003 Mazda 6 MPG & fuel economy
The 2003 Mazda 6 is a midsize car offered in 4 EPA-rated configurations. The most efficient version returns 24 MPG combined (22 city / 29 highway) on regular gasoline. Across the lineup, combined ratings range from 20 to 24 MPG. Among 38 midsize cars rated for 2003, it ranks 3rd for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $1,938 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2003 Mazda 6's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 9.4 km/L in the city and 12.3 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 22 | 9.4 | 10.7 |
| Highway | 29 | 12.3 | 8.1 |
| Combined | 24 | 10.2 | 9.8 |
How it ranks among 2003 Midsize Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
6 MPG across model years
Full history →4 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 2.3L 4-cyl · 5-speed manual 6 |
Gas | 22 MPG | 29 MPG | 24 MPG | — | $1,938 |
| FWD · 2.3L 4-cyl · 4-speed automatic 6 |
Gas | 20 MPG | 26 MPG | 22 MPG | — | $2,114 |
| FWD · 3.0L 6-cyl · 5-speed manual 6 |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,325 |
| FWD · 3.0L 6-cyl · 5-speed automatic 6 |
Gas | 17 MPG | 25 MPG | 20 MPG | — | $2,325 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 2.3L 4-cyl
- Transmission
- 5-speed manual
- Drivetrain
- FWD
- Passenger volume
- 111 cu ft
- Cargo volume
- 15 cu ft
- Tailpipe CO₂
- 370 g/mi
2003 Mazda 6 vs. rivals
Compare the 2003 6
With any other car from any year, including other 6 model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2003 Mazda 6?
Up to 24 MPG combined (22 city / 29 highway); ratings range from 20 to 24 MPG depending on configuration.
What fuel does the 2003 Mazda 6 use?
Regular gasoline.
What is the fuel average in km/L for the 2003 Mazda 6?
The 2003 Mazda 6's fuel average is 10.2 km/L (9.8 L/100 km), or 24 MPG combined: 9.4 km/L in the city and 12.3 km/L on the highway.
How much does it cost to fuel the 2003 Mazda 6 per year?
About $1,938 at 15,000 miles a year with $3.10/gal regular gas, or $12.92 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.