2021 · Compact Car · Gas
2021 Mazda CX-3 MPG & fuel economy
The 2021 Mazda CX-3 is a compact car offered in 2 EPA-rated configurations. The most efficient version returns 31 MPG combined (29 city / 34 highway) on regular gasoline. Across the lineup, combined ratings range from 29 to 31 MPG. Efficiency is unchanged from the 2020 model. Among 37 compact cars rated for 2021, it ranks 14th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $1,500 a year to fuel.
What will it cost you?
Your mileage and prices are saved and used across the site.
Fuel average
The 2021 Mazda CX-3's fuel average is 13.2 km/L (7.6 L/100 km), or 31 MPG combined: 12.3 km/L in the city and 14.5 km/L on the highway.
| MPG | km/L | L/100 km | |
|---|---|---|---|
| City | 29 | 12.3 | 8.1 |
| Highway | 34 | 14.5 | 6.9 |
| Combined | 31 | 13.2 | 7.6 |
How it ranks among 2021 Compact Cars
Full class ranking →Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.
CX-3 MPG across model years
Full history →2 EPA-rated configurations
| Configuration | Type | City | Hwy | Combined | Range | Your cost / yr |
|---|---|---|---|---|---|---|
| FWD · 2.0L 4-cyl · 6-speed automatic CX-3 2WD |
Gas | 29 MPG | 34 MPG | 31 MPG | — | $1,500 |
| 4WD · 2.0L 4-cyl · 6-speed automatic CX-3 4WD |
Gas | 27 MPG | 32 MPG | 29 MPG | — | $1,603 |
Specs (most efficient configuration)
- Fuel
- Regular gasoline
- Engine / motor
- 2.0L 4-cyl
- Transmission
- 6-speed automatic
- Drivetrain
- FWD
- Passenger volume
- 88 cu ft
- Cargo volume
- 16 cu ft
- Tailpipe CO₂
- 289 g/mi
- EPA fuel economy score
- 7/10
- EPA greenhouse gas score
- 7/10
2021 Mazda CX-3 vs. rivals
Compare the 2021 CX-3
With any other car from any year, including other CX-3 model years. Type a year to jump, e.g. "2015 Accord".
Frequently asked questions
What is the gas mileage of the 2021 Mazda CX-3?
Up to 31 MPG combined (29 city / 34 highway); ratings range from 29 to 31 MPG depending on configuration.
What fuel does the 2021 Mazda CX-3 use?
Regular gasoline.
What is the fuel average in km/L for the 2021 Mazda CX-3?
The 2021 Mazda CX-3's fuel average is 13.2 km/L (7.6 L/100 km), or 31 MPG combined: 12.3 km/L in the city and 14.5 km/L on the highway.
How much does it cost to fuel the 2021 Mazda CX-3 per year?
About $1,500 at 15,000 miles a year with $3.10/gal regular gas, or $10.00 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.