2020 head-to-head · Midsize Car

2020 Mazda 3 vs Nissan Sentra

MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.

Swap sides
✓ Cheaper to run
$1,550/ year to fuel
30 MPG
✓ Cheaper to run
$1,409/ year to fuel
33 MPG

The 2020 Nissan Sentra is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $1,409 a year to fuel (33 MPG), versus $1,550 for the 2020 Mazda 3 (30 MPG). That's roughly $141 a year, or about $705 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 3
  • Nissan Sentra

Side by side

Mazda 3Nissan Sentra
$1,550 Your annual fuel cost $1,409
30 MPG Combined efficiency 33 MPG
26 MPG City 29 MPG
35 MPG Highway 39 MPG
93 cu ft Passenger volume 96 cu ft
20 cu ft Cargo volume 14 cu ft
297 g/mi Tailpipe CO₂ (g/mi) 268 g/mi
7/10 EPA fuel economy score 7/10
7/10 EPA greenhouse gas score 7/10
Gas Powertrain Gas
Regular gasoline Fuel Regular gasoline
2.5L 4-cyl Engine / motor 2.0L 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 3 vs Nissan Sentra across model years

  • Mazda 3
  • Nissan Sentra

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 Sentra has more passenger space (96 vs. 93 cu ft); the Mazda 3 has more cargo space (20 vs. 14 cu ft).

Among 64 2020 midsize cars, the Mazda 3 ranks 27th and the Nissan Sentra 20th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2020 Mazda 3 or the 2020 Nissan Sentra?

Measured by cost to drive, the Nissan Sentra. The Mazda 3 is rated 30 MPG combined and the Nissan Sentra 33 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2020 Mazda 3 vs. the Nissan Sentra per year?

At 15,000 miles a year with $3.10/gal regular gas, about $1,550 for the Mazda 3 and $1,409 for the Nissan Sentra.

Which has more cargo space?

The Mazda 3, with 20 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).

Mazda 3 vs Nissan Sentra in other years

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