Mazda CX-30 MPG and Fuel Tank Size | All Model Years

At Sport Mazda North, we know shoppers do not just want a quick number pulled from a chart. They want to understand how the Mazda CX-30 has changed over time, which versions are the most efficient, and what to expect from the fuel tank size on each model year. The CX-30 has stayed true to Mazda’s approach of blending strong efficiency with confident driving manners, but the exact EPA ratings and tank setup do vary depending on the year, drivetrain, and whether you are looking at a naturally aspirated or turbo model.

2026 Mazda CX-30 MPG and Fuel Tank Size

Mazda USA currently lists 2026 Mazda CX-30 2.5 S models at 24 city, 31 highway, and 27 combined mpg with AWD and the automatic transmission. Mazda also lists a 12.7-gallon fuel capacity for the 2026 CX-30, and Mazda promotional materials note that the 2026 CX-30 2.5 Turbo Premium Plus is rated at 22 city, 30 highway, and 25 combined mpg. Since Mazda is actively publishing 2026 CX-30 specs, we include the 2026 model year here.

For most shoppers, that means the 2026 CX-30 keeps the same practical formula many drivers already like: standard AWD, a compact 12.7-gallon tank, and fuel economy that remains competitive whether you stay with the standard engine or step up to turbo power.

2025, 2024, and 2023 Mazda CX-30 MPG and Fuel Tank Size

For 2025, 2024, and 2023, the numbers line up closely enough that it makes sense to group them together. EPA listings for the 2025, 2024, and 2023 Mazda CX-30 show the naturally aspirated AWD models at 26 city, 33 highway, and 29 combined mpg, while the turbo AWD models come in at 22 city, 30 highway, and 25 combined mpg. Mazda’s own 2023, 2024, and 2025 model announcements also confirm that U.S. CX-30 models in these years came standard with i-Activ AWD.

Because these 2023 through 2025 U.S. CX-30 models are standard AWD, the fuel tank size works out to the AWD specification Mazda lists at 12.7 gallons. Mazda’s official manuals and specs pages list AWD CX-30 capacity at 12.7 gallons, which matches the standard-AWD setup used across these model years.

From a buying perspective, this is a very straightforward stretch of CX-30 history. If you are comparing a 2023, 2024, or 2025 model, you are generally looking at the same core fuel-economy story: 29 combined mpg for the non-turbo version, 25 combined mpg for the turbo, and a 12.7-gallon tank.

2022 Mazda CX-30 MPG and Fuel Tank Size

The 2022 Mazda CX-30 is where standard AWD became a key part of the model’s identity in the U.S. Mazda’s 2022 pricing and packaging announcement says standard i-Activ AWD applies across the CX-30 lineup, and the EPA listing for the 2022 model shows naturally aspirated versions at 24 city, 31 highway, and 26 combined mpg, while the turbo version is rated at 22 city, 30 highway, and 25 combined mpg.

Since the 2022 CX-30 lineup is standard AWD in the U.S., the tank size aligns with Mazda’s AWD CX-30 capacity listing of 12.7 gallons. That makes 2022 an easy year to read: one drivetrain layout across the range, with the main fuel-economy split being standard engine versus turbo engine.

2021 Mazda CX-30 MPG and Fuel Tank Size

The 2021 CX-30 lineup offered more variation. Mazda’s official brochure lists the standard 2.5-liter CX-30 at 25 city and 33 highway in FWD form, 24 city and 31 highway in AWD form, and 22 city and 30 highway for the turbo AWD model. The same Mazda brochure lists fuel tank capacity at 13.5 gallons for FWD and 12.7 gallons for AWD. EPA listings for 2021 also show combined ratings of 28 mpg for FWD, 26 mpg for standard AWD, and 25 mpg for turbo AWD.

That makes 2021 a useful year for shoppers who want choices. If maximum efficiency mattered most, a front-wheel-drive CX-30 offered the best numbers and the larger tank. If all-weather traction was the priority, AWD lowered economy slightly and reduced fuel capacity to 12.7 gallons. Turbo AWD delivered the strongest performance, but with the expected drop to 25 combined mpg.

2020 Mazda CX-30 MPG and Fuel Tank Size

The first U.S. model year is the most detailed because the 2020 CX-30 launched with multiple fuel-economy combinations. Mazda’s official 2020 specification deck lists FWD CX-30 models at 25 city, 33 highway, and 28 combined mpg. Standard AWD models without cylinder deactivation are listed at 24 city, 31 highway, and 26 combined mpg, while certain AWD versions with cylinder deactivation are listed at 25 city, 32 highway, and 27 combined mpg. Mazda also lists fuel tank capacity at 13.5 gallons for FWD and 12.7 gallons for AWD.

For buyers looking back at early CX-30 inventory, 2020 is the one year where you want to pay especially close attention to trim and drivetrain. Two vehicles can both be 2020 CX-30s and still have different fuel-economy ratings depending on whether they are FWD, AWD, or an AWD Premium model with cylinder deactivation.

What Changed Across the Mazda CX-30 Model Years

Looking across the full run, the biggest shift came between the early years and the later standard-AWD years. The 2020 and 2021 CX-30 gave buyers both FWD and AWD choices, with FWD bringing the best efficiency and the larger 13.5-gallon tank. Starting in 2022, Mazda made AWD standard in the U.S. lineup, which simplified the formula and effectively standardized the fuel tank size at 12.7 gallons. Fuel economy then improved for the naturally aspirated AWD setup in 2023 through 2025 before settling at 24/31/27 for the 2026 naturally aspirated AWD model now listed by Mazda.

Conclusion

If you want the short takeaway from our side at Sport Mazda North, it is this: 2020 and 2021 offer the widest mix of MPG and tank-size combinations, 2022 marks the move to standard AWD, 2023 through 2025 share the strongest non-turbo AWD EPA numbers, and 2026 is now officially available with Mazda-published specs. For most current shoppers, the modern CX-30 formula is easy to understand: standard AWD, a 12.7-gallon tank, and a choice between higher-efficiency non-turbo models or stronger turbo models.