

Model Year | Body/Powertrain | MPG | |
2003 | 2003 4dr Sedan 306-hp 3.5L V6 6-sp shiftable automatic RWD | 22.12 | See all data |
With the 311-horsepower 3.5L V6 engine, 8-speed shiftable automatic transmission, and rear-wheel drive, the 2003 Lexus GS has been averaging 22.12 MPG (miles per gallon). The 2003 Lexus GSs in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 60 percent of the miles driven). The rest of the miles were in heavy traffic (10 percent), in the suburbs (0 percent), and in the city (0 percent). In addition, the average 2003 Lexus GS in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time. |
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