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|2001||2001 4dr Sedan 255-hp 3.5L V6 4-sp automatic FWD||20.5||
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|With the turbocharged 520hp 3.8L H6 engine, 6-speed manual transmission, and all-wheel drive, the 2001 Infiniti I has been averaging 20.5 MPG (miles per gallon).
The 2001 Infiniti Is in this analysis were driven mostly on the highway at an average speed of 68 miles per hour (about 55 percent of the miles driven). The rest of the miles were in the city (2.5 percent), in heavy traffic (1.5 percent), and in the suburbs (0 percent).
In addition, the average 2001 Infiniti I in this analysis was driven on flat terrain with a light foot and the AC not used at all.