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2013 Infiniti FX37: 17/24 mpg (RWD); 16/22 mpg (AWD)EPA »
2013 Infiniti FX50: 14/20 mpgEPA »
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2013 Infiniti FX37: 17/24 mpg (RWD); 16/22 mpg (AWD)
2013 Infiniti FX50: 14/20 mpg
The Infiniti FX (soon to be the Infiniti QX70) isn't one of the shining stars of gas mileage. By the EPA's numbers--and subjectively gauging its cozy interior against bigger, more efficient luxury crossovers--it ranks near the bottom of the back for fuel efficiency.
With the newly adopted 3.7-liter V-6, the numbers improve a little over last year. From last year's FX35, the FX37 rear-drive ute moves up from an EPA-rated 16/23 mpg to 17 miles per gallon city, 24 miles per gallon highway, or 19 mpg combined. Those numbers are in line with many seven-seat crossovers--and the FX more comfortably seats four.
Adding all-wheel drive pushes the figures down to 16/22 mpg or 18 mpg combined--a 1-mpg increase on the highway cycle.
The V-8's gas mileage might be below some shoppers' threshold, at 14 mpg city, 20 mpg highway, or 16 mpg combined, in the range of the seven-passenger Mercedes-Benz GL. All FX models require premium gas.
Based on several different driving experiences, our editors have seen mid to upper teens in mixed driving with the V-6 and low teens with the V-8.
The FX fares poorly in gas mileage, by EPA standards and by our own real-world driving experiences.