Mazda · Small SUVs · Gasoline
Mazda CX-30: MPG and annual fuel cost, 2026
In model year 2026 the Mazda CX-30 is rated at 27 MPG combined, tied for 69th of 113 small SUVs, in the lower half.
- 27MPG combinedtied 69th of 113 in class
- $2,500a year in fueltied 63rd of 113 in class
- 329g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is tied for 19th of 58 gasoline small SUVs, in the upper half. The median of that narrower group is 26 MPG, against 29 MPG for all small SUVs together.
Among all gasoline models of the year, regardless of size, it is tied for 44th of 180 gasoline models, in the upper half.
Within the 10 Mazda models rated for 2026 it is 4th on combined rating; the median of the make's line-up is 26 MPG.
In its class, just ahead of it is the BMW X1 at 28 MPG and just behind it is the Jeep Compass at 26 MPG.
Fuel cost and CO2
The file prices the fuel for its most efficient version at about $2,500 a year, assuming 15,000 miles a year with 55% of them in the city and regular gasoline at $4.47 per gallon. That is $200 more than the small SUVs median of $2,300, which makes it tied for 63rd of 113 small SUVs, in the lower half.
It emits 329 g of CO2 per mile from the tailpipe; the small SUVs median is 298, a difference of 31 g/mile.
Rated versions
Its city rating is 24 and its highway rating 31: the highway figure is 7 higher. 2 versions are rated for 2026. The most efficient, CX-30 4WD: 2.5 L, 4 cyl, Automatic (S6), 4WD, gets 27 MPG; the least efficient listed, CX-30 4WD: 2.5 L, 4 cyl, Automatic (S6), 4WD (version 2), gets 25 MPG, a gap of 2 MPG. With the file's assumptions that gap is worth about $200 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| CX-30 4WD: 2.5 L, 4 cyl, Automatic (S6), 4WD | 27 | 24 | 31 | $2,500 | 329 |
| CX-30 4WD: 2.5 L, 4 cyl, Automatic (S6), 4WD (version 2) | 25 | 22 | 30 | $2,700 | 353 |
Year by year
The Mazda CX-30 is in the data for 7 of the 8 model years from 2019 to 2026. Between 2020 and 2026 the best combined rating fell by 1 MPG, from 28 to 27. The highest figure came in 2023, at 29. The number of rated versions shrank from 4 to 2. Fuel cost for the best version is $2,500 in the latest data against $2,400 in 2020, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 2 | 27 | 25 | $2,500 | 329 | 29 |
| 2025 | 2 | 29 | 25 | $2,300 | 309 | 29 |
| 2024 | 2 | 29 | 25 | $2,300 | 309 | 28 |
| 2023 | 2 | 29 | 25 | $2,300 | 309 | 27 |
| 2022 | 2 | 26 | 25 | $2,600 | 334 | 26 |
| 2021 | 5 | 28 | 25 | $2,400 | 313 | 26 |
| 2020 | 4 | 28 | 26 | $2,400 | 313 | 26 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| GMC Terrain | Gasoline | 27 | $2,500 | 2026 |
| Mercedes-Benz GLC-Class Hybrid | Hybrid | 27 | $3,050 | 2026 |
| BMW X2 | Gasoline | 28 | $2,950 | 2026 |
| Jeep Compass | Gasoline | 26 | $2,600 | 2026 |
| Kia Sorento | Gasoline | 26 | $2,600 | 2026 |
Compare and rank
Rankings: Small SUVs, Gasoline, Mazda, Gasoline small SUVs.
Data: US EPA and DOE, as prepared in methods and data.