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|2003||2003 4dr Sedan 340-hp 4.5L V8 5-sp shiftable automatic RWD||19.9||
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|With the engine, transmission, and rear-wheel drive, the 2003 Infiniti Q has been averaging 19.9 MPG (miles per gallon).
The 2003 Infiniti Qs in this analysis were driven mostly on the highway at an average speed of 80 miles per hour (about 65 percent of the miles driven). The rest of the miles were in the city (20 percent), in heavy traffic (5 percent), and in the suburbs (0 percent).
In addition, the average 2003 Infiniti Q in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time.