Fiat averages 49.6 mpg combined across 7 models (2012–2026). The best on record does 116 mpg, the thirstiest 25 — a yearly fuel gap of about $1,205.
What that actually costs
What a Fiat costs to feed, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Average combined | 49.6 mpg |
| Fuel per year | $774 |
| Most frugal on record | 116 mpg — $331 a year |
| Thirstiest on record | 25 mpg — $1,536 a year |
Fiat models by fuel economy
From the most frugal down. The yearly figure is what the fuel actually costs at 12,000 miles.
| Model | Average mpg | Best / Worst engine | Fuel per year |
|---|---|---|---|
| Fiat 500e | 116 / 116 | $331 | |
| Fiat 500 | 116 / 26 | $560 | |
| Fiat Freemont | 34 / 32 | $1,150 | |
| Fiat 124 Spider | 30 / 30 | $1,280 | |
| Fiat Ducato | 30 / 26 | $1,391 | |
| Fiat 500X | 28 / 26 | $1,433 | |
| Fiat 500L | 28 / 25 | $1,460 |
MPG is a number. Dollars per year is the answer.
- Fuel profile built from your actual mileage and local prices
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- Insurance and fuel folded into 5-year cost to own
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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 is the average Fiat mpg?
49.6 mpg combined across 7 models rated between 2012 and 2026. That averages everything the brand has offered, so a long history of trucks pulls it down.
Which Fiat model is the most economical?
See the table above — models are sorted from the most frugal down, with what each costs in fuel per year.
How much does a Fiat cost to run?
About $774 a year in fuel on average, at 12,000 miles and $3.20 a gallon.
Why does the average look low for a modern brand?
Because it covers every model year on record, back to the 1980s. Cars built before the mid-2000s were markedly thirstier — that era is included.