The Fiat 500X does 26.8 mpg combined (24.4 city, 31.1 highway), which works out to about $1,433 a year in fuel at $3.20 a gallon and 12,000 miles. Engine choice matters more than you'd think: 1.4L 4-cyl does 28 mpg while 1.3L 4-cyl does 26 — a difference of $106 a year. Against other 4-cyl cars it sits above the average of 25.7 mpg.
Every Fiat 500X engine, compared
Gas mileage on the Fiat 500X ranges from 28 down to 26 depending on which engine sits under the bonnet — a spread of $106 a year across 2 versions of the same car. Picking the right one 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 |
|---|---|---|---|---|
| 1.4L 4-cyl | 25 / 33 | 2016–2018 | $1,371 | |
| 1.3L 4-cyl | 24 / 30 | 2019–2023 | $1,477 |
What that actually costs
The Fiat 500X burns a gallon every 26.8 miles, so 12,000 miles takes about 448 gallons a year. At $3.20 that is what the table below adds up to.
| Measure | Value |
|---|---|
| Cost per mile | $0.119 |
| Fuel per year | $1,433 |
| Fuel over five years | $7,165 |
| Against other 4-cyl cars | −$61 a year |
| EPA's own estimate | $2,531 a year |
City or highway — who is this car for
The Fiat 500X gives up 6.7 mpg the moment you leave the motorway — 31.1 out there against 24.4 in town, a 27% drop worth $339 a year. 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 | 24.4 mpg | $1,574 a year if you only drive in town |
| Highway | 31.1 mpg | $1,235 a year if you mostly commute |
| Gap | +6.7 mpg (27%) | Typical for its type |
How the 500X changed over the years
The 500X peaked in 2018 at 28 mpg (25 city, 33 highway) and was at its thirstiest in 2023 at 26 — 2 mpg apart, or $106 a year in fuel between buying one year and the other. The 2023 car does 26. 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 |
|---|---|---|---|---|
| 2023 | 24 / 30 | 1 | $1,477 | |
| 2022 | 24 / 30 | 1 | $1,477 | |
| 2021 | 24 / 30 | 1 | $1,477 | |
| 2020 | 24 / 30 | 1 | $1,477 | |
| 2019 | 24 / 30 | 1 | $1,477 | |
| 2018 | 25 / 33 | 1 | $1,371 | |
| 2017 | 25 / 33 | 1 | $1,371 | |
| 2016 | 25 / 33 | 1 | $1,371 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 8 EPA ratings of the Fiat 500X — 2 engines across 2016–2023. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $2,531. Full method.
Frequently asked questions
What mpg does the Fiat 500X get?
26.8 mpg combined on average — 24.4 in the city and 31.1 on the highway, per EPA ratings across 2016–2023.
How much does a Fiat 500X cost in fuel per year?
About $1,433 at 12,000 miles and $3.20 a gallon — roughly $7,165 over five years, or 0.119 dollars a mile.
Which 500X engine is the most economical?
The 1.4L 4-cyl at 28 mpg, against 26 for the 1.3L 4-cyl — a difference of about $106 a year.
Is the 500X good on fuel compared with similar cars?
Against other 4-cyl cars it sits above the average of 25.7 mpg, computed across 4765 ratings.
Are these real-world 500X figures?
No — they are EPA laboratory ratings, the same ones printed on the window sticker, and EPA's own annual fuel estimate for the Fiat 500X is $2,531 against the $1,433 we compute at 12,000 miles. Expect a little worse in practice: the spread between the 28 and 26 mpg versions of this car is smaller than the spread between two drivers of the same one.
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