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|2005||2005 4dr Sedan 306-hp 3.5L V6 6-sp shiftable automatic RWD||20.4||
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|With the 311-horsepower 3.5L V6 engine, 8-speed shiftable automatic transmission, and rear-wheel drive, the 2005 Lexus GS has been averaging 20.4 MPG (miles per gallon).
The 2005 Lexus GSs in this analysis were driven mostly in the city (about 30 percent of the miles driven). The rest of the miles were in heavy traffic (20 percent), on the highway at an average speed of 65 miles per hour (20 percent), and in the suburbs (0 percent).
In addition, the average 2005 Lexus GS in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.