2018 head-to-head · Two-Seater

2018 Fiat 124 Spider vs Mazda MX-5

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
$2,043/ year to fuel
29 MPG

The 2018 Fiat 124 Spider 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 $2,043 for the 2018 Mazda MX-5 (29 MPG). That's roughly $68 a year, or about $341 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

  • Fiat 124 Spider
  • Mazda MX-5

Side by side

Fiat 124 SpiderMazda MX-5
$1,975 Your annual fuel cost $2,043
30 MPG Combined efficiency 29 MPG
26 MPG City 26 MPG
35 MPG Highway 33 MPG
298 g/mi Tailpipe CO₂ (g/mi) 305 g/mi
7/10 EPA fuel economy score 6/10
7/10 EPA greenhouse gas score 6/10
Gas Powertrain Gas
Premium gasoline Fuel Premium gasoline
1.4L 4-cyl turbo Engine / motor 2.0L 4-cyl
6-speed manual 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.

Fiat 124 Spider vs Mazda MX-5 across model years

  • Fiat 124 Spider
  • Mazda MX-5

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 30 2018 two-seaters, the Fiat 124 Spider ranks 3rd and the Mazda MX-5 4th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2018 Fiat 124 Spider or the 2018 Mazda MX-5?

Measured by cost to drive, the Fiat 124 Spider. The Fiat 124 Spider is rated 30 MPG combined and the Mazda MX-5 29 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2018 Fiat 124 Spider vs. the Mazda MX-5 per year?

At 15,000 miles a year with $3.95/gal premium gas, about $1,975 for the Fiat 124 Spider and $2,043 for the Mazda MX-5.

Fiat 124 Spider vs Mazda MX-5 in other years

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