The 2014 Fiat 500 is one of the most fuel-efficient non-electrified models on the U.S. market; but if you're accustomed to fuel-efficient small cars, it might not prove as miserly on fuel as you might think.
The most efficient model is the base 500 equipped with the five-speed manual transmission, earning an EPA-estimated 31 mpg city and 40 highway. The optional six-speed automatic drops those figures to 27 mpg and 34 mpg, respectively.
If you go for the 500 Abarth, you gain 60 horsepower and a turbocharger, but lose only a bit of efficiency: it rates 28/34 mpg.
Those are good figures, for the most part; but considering that mid-size hybrid sedans are beating this pint-sized mini at the pump, it's clear that there are some tradeoffs involved in keeping the price low and the driving attitude vivacious.