The rating refers to the base model with the 1.4-liter turbocharged four-cylinder engine with a six-speed manual transmission.
The 2016 Fiat 500X with the 2.4-liter four-cylinder engine and a nine-speed automatic transmission returns 22 mpg in city driving and 31 mpg on the highway for a combined rating of 25 mpg.
The EPA has not published official fuel economy numbers for the all-wheel-drive version of the Fiat 500X.
The 500X launches as gas prices are relatively inexpensive. The AAA Daily Fuel Gauge Report on Wednesday pegged the average price for a gallon of unleaded gasoline at $2.63 versus $3.66 a year ago.
Edmunds says: Car shoppers get an important new piece of information about the Fiat 500X before they head out to the dealership.