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|2004||2004 4dr Sedan 205-hp 3.8L V6 4-sp automatic FWD||28.15||
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|With the 205-horsepower 3.8L V6 engine, 4-speed automatic transmission, and front-wheel drive, the 2004 Pontiac Bonneville has been averaging 28.15 MPG (miles per gallon).
The 2004 Pontiac Bonnevilles in this analysis were driven mostly on the highway at an average speed of 70 miles per hour (about 56.5 percent of the miles driven). The rest of the miles were in the city (16 percent), in heavy traffic (5 percent), and in the suburbs (0 percent).
In addition, the average 2004 Pontiac Bonneville in this analysis was driven on flat terrain with a light foot and the AC on only some of the time.