MPG Atlas

Home / Makes / Mazda / CX-3

Mazda CX-3 MPG

EPA fuel economy for 12 Mazda CX-3 trims sold from 2016 to 2021. Best ever: 31 MPG (2021 CX-3 2WD). Latest model year 2021: 29 to 31 MPG combined across 2 trims.

31best combined MPG (2021)
29 / 34city / highway of the best trim
29lowest combined MPG (2021)
6model years rated
$2,010a year to fuel, cheapest 2021 trim at EPA prices

Mazda CX-3 fuel cost calculator

Enter what you pay for fuel and how far you drive in a year. The starting prices are the ones the EPA uses for its own yearly fuel-cost estimates. Every cost on this page updates as you type.

At $4.16 a gallon for regular and 15,000 miles a year, the cheapest 2021 Mazda CX-3 to fuel is the CX-3 2WD, 2.0 L, 4 cyl (31 MPG) at $2,010 a year. The CX-3 4WD, 2.0 L, 4 cyl (29 MPG) costs $2,150, so the thriftier trim saves $140 a year and $700 over five years.

2021 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular31$2,010cheapest
CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular29$2,150+$140

Cost per year is miles per year divided by the EPA combined rating, times your fuel price; electric vehicles use the EPA's kWh per 100 miles instead. Rounded to the nearest $10. Your prices are kept in this browser only.

Mazda CX-3 MPG by year

YearBest combinedCityHwyBest trim that yearTrims
2021312934CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2
2020312934CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2
2019312934CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2
2018312934CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2
2017312934CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2
2016312935CX-3 2WD, 2.0 L, 4 cyl, Auto (S6)2

Every Mazda CX-3 trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
2021CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293431289$2,010
2021CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229303$2,150
2020CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293431289$2,010
2020CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229303$2,150
2019CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293431289$2,010
2019CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229303$2,150
2018CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293431290$2,010
2018CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229308$2,150
2017CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293431288$2,010
2017CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229308$2,150
2016CX-3 2WD2.0 L, 4 cylAuto (S6)FWDRegular293531290$2,010
2016CX-3 4WD2.0 L, 4 cylAuto (S6)4WDRegular273229308$2,150

CO2 is tailpipe grams per mile from the EPA test. Fuel cost per year uses the prices and miles in the calculator above (the EPA's own prices and 15,000 miles a year until you change them); blank when the fuel has no price here (hydrogen, natural gas).

Compare with other 2021 Compact Cars

VehicleCombinedCityHwy
2021 Kandi K27114127102
2021 Porsche Taycan Perf Battery797684
2021 Toyota Mirai XLE747671
2021 Toyota Corolla Hybrid525352
2021 Honda Insight Touring485145
2021 Lexus UX 250h424341

All Compact Cars ranked by MPG

Questions people ask

What is the best MPG for a Mazda CX-3?

The most efficient Mazda CX-3 the EPA has rated is the 2021 CX-3 2WD at 31 MPG combined (29 city, 34 highway).

What MPG does the 2021 Mazda CX-3 get?

2021 Mazda CX-3 trims range from 29 to 31 MPG combined, depending on engine, transmission and drivetrain.

Which Mazda CX-3 has the worst fuel economy?

The 2021 CX-3 4WD is the lowest rated at 29 MPG combined.

How much does it cost to fuel a Mazda CX-3 for a year?

At $4.16 a gallon for regular and 15,000 miles a year, the cheapest 2021 Mazda CX-3 to fuel is the CX-3 2WD, 2.0 L, 4 cyl (31 MPG) at $2,010 a year. The CX-3 4WD, 2.0 L, 4 cyl (29 MPG) costs $2,150, so the thriftier trim saves $140 a year and $700 over five years.

More from Mazda: every Mazda model. Fuel types on this model: Regular. EPA classes: Compact Cars.