2021 head-to-head · Two-Seater

2021 Mazda MX-5 vs Nissan 370z

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
$1,975/ year to fuel
30 MPG
✓ Cheaper to run
$2,962/ year to fuel
20 MPG

RWD · 3.7L 6-cyl · 6-speed manual · 20 MPG

The 2021 Mazda MX-5 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $1,975 a year to fuel (30 MPG), versus $2,962 for the 2021 Nissan 370z (20 MPG). That's roughly $987 a year, or about $4,937 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 MX-5
  • Nissan 370z

Side by side

Mazda MX-5Nissan 370z
$1,975 Your annual fuel cost $2,962
30 MPG Combined efficiency 20 MPG
26 MPG City 17 MPG
35 MPG Highway 26 MPG
299 g/mi Tailpipe CO₂ (g/mi) 445 g/mi
6/10 EPA fuel economy score 4/10
6/10 EPA greenhouse gas score 4/10
Gas Powertrain Gas
Premium gasoline Fuel Premium gasoline
2.0L 4-cyl Engine / motor 3.7L 6-cyl
6-speed automatic Transmission 6-speed manual
RWD Drivetrain RWD

✓ 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 MX-5 vs Nissan 370z across model years

  • Mazda MX-5
  • Nissan 370z

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

Among 27 2021 two-seaters, the Mazda MX-5 ranks 2nd and the Nissan 370z 10th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2021 Mazda MX-5 or the 2021 Nissan 370z?

Measured by cost to drive, the Mazda MX-5. The Mazda MX-5 is rated 30 MPG combined and the Nissan 370z 20 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2021 Mazda MX-5 vs. the Nissan 370z per year?

At 15,000 miles a year with $3.95/gal premium gas, about $1,975 for the Mazda MX-5 and $2,962 for the Nissan 370z.

Mazda MX-5 vs Nissan 370z in other years

More 2021 comparisons

Or compare the 2021 Mazda MX-5 with anything else:

Keep exploring