2020 head-to-head · Midsize Car
2020 Mazda 6 vs Nissan Altima
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2020 Nissan Altima is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $1,453 a year to fuel (32 MPG), versus $1,603 for the 2020 Mazda 6 (29 MPG). That's roughly $150 a year, or about $752 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Mazda 6
- Nissan Altima
Side by side
| Mazda 6 | Nissan Altima | |
|---|---|---|
| $1,603 | Your annual fuel cost | $1,453 |
| 29 MPG | Combined efficiency | 32 MPG |
| 26 MPG | City | 28 MPG |
| 35 MPG | Highway | 39 MPG |
| 100 cu ft | Passenger volume | 101 cu ft |
| 14 cu ft | Cargo volume | 15 cu ft |
| 302 g/mi | Tailpipe CO₂ (g/mi) | 278 g/mi |
| 6/10 | EPA fuel economy score | 7/10 |
| 6/10 | EPA greenhouse gas score | 7/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.5L 4-cyl | Engine / motor | 2.5L 4-cyl |
| 6-speed automatic | Transmission | CVT |
| FWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Mazda 6 vs Nissan Altima across model years
- Mazda 6
- Nissan Altima
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Nissan Altima has more cargo space (15 vs. 14 cu ft).
Among 64 2020 midsize cars, the Mazda 6 ranks 28th and the Nissan Altima 24th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Mazda 6 or the 2020 Nissan Altima?
Measured by cost to drive, the Nissan Altima. The Mazda 6 is rated 29 MPG combined and the Nissan Altima 32 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Mazda 6 vs. the Nissan Altima per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,603 for the Mazda 6 and $1,453 for the Nissan Altima.
Which has more cargo space?
The Nissan Altima, with 15 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
Mazda 6 vs Nissan Altima in other years
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