# Mazda CX-3 specs and mpg by year

- **Latest year:** 2021
- **MPG (combined):** 29-31
- **Drive:** 4WD, FWD
- **Years covered:** 2016-2021

## Quick answer

The 2021 Mazda CX-3 is a compact car rated at 29-31 mpg combined. Engines: 2.0L 4-cyl.

## Every 2021 Mazda CX-3 version

| Version | Engine | Drive | Transmission | City/Hwy | Combined | Fuel cost / year | CO2 |
| --- | --- | --- | --- | --- | --- | --- | --- |
| CX-3 2WD | 2.0L 4-cyl | FWD | Automatic | 29/34 | 31 mpg | $2,150 | 289 g/mi |
| CX-3 4WD | 2.0L 4-cyl | 4WD | Automatic | 27/32 | 29 mpg | $2,300 | 303 g/mi |

Each row is a version the EPA tested. Fuel cost assumes 15,000 miles a year (55% city) at national average prices; CO2 is tailpipe emissions.

## Mazda CX-3 specs by year

| Year | Engines | Transmission | Drive | MPG (combined) |
| --- | --- | --- | --- | --- |
| 2021 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |
| 2020 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |
| 2019 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |
| 2018 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |
| 2017 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |
| 2016 | 2.0L 4-cyl | Automatic | 4WD, FWD | 29-31 |

EPA combined ratings. MPGe is the EPA efficiency measure for electric cars. Ranges cover every engine and drivetrain EPA tested for that year.

## Frequently asked questions

### What mpg does the 2021 Mazda CX-3 get?

The 2021 Mazda CX-3 is EPA-rated at 29-31 mpg combined, depending on engine and drivetrain. Real-world mileage varies with speed, climate and load.

### What engine does the 2021 Mazda CX-3 have?

The 2021 Mazda CX-3 comes with: 2.0L 4-cyl. It uses automatic transmission and is offered with 4WD and FWD.

### Is there a hybrid Mazda CX-3?

No. In the EPA data from 2016-2021 the Mazda CX-3 has no hybrid version.

### Which Mazda CX-3 year gets the best gas mileage?

In the EPA data, the 2021 Mazda CX-3 has the highest combined rating, up to 31 mpg. Ratings for the same model can change between years when engines or test procedures change.

### How much does it cost to fuel a 2021 Mazda CX-3 for a year?

About $2,150-$2,300 a year, using the EPA's assumptions of 15,000 miles (55% city, 45% highway) at national average fuel prices. Your cost depends on your local prices, mileage and driving style.

### What is the city and highway mpg of the 2021 Mazda CX-3?

The most efficient 2021 version, the CX-3 2WD, is rated 29 mpg city and 34 mpg highway (31 combined). Other engines and drivetrains are rated lower; the versions table above lists each one.

### How much CO2 does the 2021 Mazda CX-3 emit?

EPA rates its tailpipe CO2 at 289-303 grams per mile depending on version. Lower is better; the cleanest gas cars sit under 250 g/mi and electric cars have none at the tailpipe.

### Does the 2021 Mazda CX-3 come with all-wheel drive?

Yes. The 2021 Mazda CX-3 is offered with 4WD and FWD. All- or four-wheel drive usually costs 1-3 mpg compared with the two-wheel-drive version of the same engine, as the versions table shows.

## Sources

- [fueleconomy.gov (US DOE and EPA)](https://www.fueleconomy.gov/)

## All Mazda cars

- [Mazda MX-5](https://diagxcar.com/vehicles/mazda-mx-5)
- [Mazda 3](https://diagxcar.com/vehicles/mazda-3)

## More Mazda models

- [Mazda CX-30](https://diagxcar.com/vehicles/mazda-cx-30)
- [Mazda CX-5](https://diagxcar.com/vehicles/mazda-cx-5)
- [Mazda CX-50](https://diagxcar.com/vehicles/mazda-cx-50)
- [Mazda CX-90](https://diagxcar.com/vehicles/mazda-cx-90)
- [Mazda 2](https://diagxcar.com/vehicles/mazda-2): discontinued
- [Mazda 6](https://diagxcar.com/vehicles/mazda-6): discontinued
- [Mazda CX-9](https://diagxcar.com/vehicles/mazda-cx-9): discontinued

## Other compact cars

- [Mercedes-Benz C-Class](https://diagxcar.com/vehicles/mercedes-benz-c-class)
- [Mercedes-Benz CLA-Class](https://diagxcar.com/vehicles/mercedes-benz-cla-class)
- [Mercedes-Benz CLS-Class](https://diagxcar.com/vehicles/mercedes-benz-cls-class)
- [Mitsubishi Mirage](https://diagxcar.com/vehicles/mitsubishi-mirage)
- [Nissan Versa](https://diagxcar.com/vehicles/nissan-versa)
- [Porsche Taycan](https://diagxcar.com/vehicles/porsche-taycan)
- [Toyota Corolla](https://diagxcar.com/vehicles/toyota-corolla)
- [Toyota Mirai](https://diagxcar.com/vehicles/toyota-mirai)

## Car care

- [How long do tires last?](https://diagxcar.com/how-long/tires)
- [How often to change oil](https://diagxcar.com/how-often/change-oil)
- [Tire size calculator](https://diagxcar.com/tools/tire-size-calculator)

---

Source page: https://diagxcar.com/vehicles/mazda-cx-3
Updated: 2026-11-03
General information, not a substitute for a qualified mechanic.