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|2009||2009 4dr Sedan 350-hp 4.2L V8 6-sp shiftable automatic AWD||20||
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|With the engine, transmission, and rear-wheel drive, the 2009 Audi A8 / S8 has been averaging 20 MPG (miles per gallon).
The 2009 Audi A8 / S8s in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 100 percent of the miles driven). The rest of the miles were in the suburbs (0 percent), in the city (0 percent), and in heavy traffic (0 percent).
In addition, the average 2009 Audi A8 / S8 in this analysis was driven on flat terrain with a light foot and the AC not used at all.