The Mazda MX-30 does 55.2 mpg combined (55.4 city, 56.0 highway), which works out to about $696 a year in fuel at $3.20 a gallon and 12,000 miles. Engine choice matters more than you'd think: Electric does 92 mpg while 2.5L 4-cyl does 30.7 — a difference of $834 a year. Against other 4-cyl cars it sits above the average of 25.4 mpg.
Every Mazda MX-30 engine, compared
Picking the right version of the same car often saves more fuel than picking a different car altogether. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| Electric | 98 / 85 | 2022–2023 | $417 | |
| 2.5L 4-cyl | 27 / 36.7 | 2024–2026 | $1,251 |
What that actually costs
Miles per gallon is an abstraction; the fuel bill is not. Here it is in money, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Cost per mile | $0.058 |
| Fuel per year | $696 |
| Fuel over five years | $3,480 |
| Against other 4-cyl cars | −$816 a year |
| EPA's own estimate | $1,560 a year |
City or highway — who is this car for
The gap between city and highway figures tells you whom the car suits. A wide gap punishes stop-and-start traffic; a narrow one means the car doesn't care where you drive it.
| Measure | Value | Reading |
|---|---|---|
| City | 55.4 mpg | $693 a year if you only drive in town |
| Highway | 56.0 mpg | $686 a year if you mostly commute |
| Gap | +0.6 mpg (1%) | Narrow — equally happy either way |
How the MX-30 changed over the years
Combined figure by model year. Jumps usually mark a new generation or a new engine; dips often mean a heavier body or added all-wheel drive.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2026 | 27 / 36 | 1 | $1,280 | |
| 2025 | 27 / 37 | 1 | $1,239 | |
| 2024 | 27 / 37 | 1 | $1,239 | |
| 2023 | 98 / 85 | 1 | $417 | |
| 2022 | 98 / 85 | 1 | $417 |
MPG is a number. Dollars per year is the answer.
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How we count
Fuel-economy figures come from EPA fueleconomy.gov — the same laboratory numbers printed on the window sticker. We don't adjust them; real-world consumption depends on how and where you drive.
What we add is money. Yearly cost assumes 12,000 miles at $3.20 a gallon — change either and the ranking stays, only the size of the bill moves. Cost per mile is the same figure divided out, useful when comparing a commute against a weekend car.
Frequently asked questions
What mpg does the Mazda MX-30 get?
55.2 mpg combined on average — 55.4 in the city and 56.0 on the highway, per EPA ratings across 2022–2026.
How much does a Mazda MX-30 cost in fuel per year?
About $696 at 12,000 miles and $3.20 a gallon — roughly $3,480 over five years, or 0.058 dollars a mile.
Which MX-30 engine is the most economical?
The Electric at 92 mpg, against 30.7 for the 2.5L 4-cyl — a difference of about $834 a year.
Is the MX-30 good on fuel compared with similar cars?
Against other 4-cyl cars it sits above the average of 25.4 mpg, computed across 6877 ratings.
Are these real-world figures?
No — they are EPA laboratory ratings, the same ones on the window sticker. Real consumption depends on driving style, terrain, load and weather, and is typically a little worse.