| 1 | 0 | 3 | 4 | 3 | 4 |
Porsche Boxster MPG
| MPG | Number of Vehicles |
| 16 miles per gallon | 2 vehicles |
| 17 miles per gallon | 0 vehicles |
| 18 miles per gallon | 2 vehicles |
| 19 miles per gallon | 0 vehicles |
| 20 miles per gallon | 2 vehicles |
| 21 miles per gallon | 0 vehicles |
| 22 miles per gallon | 4 vehicles |
| 23 miles per gallon | 3 vehicles |
| 24 miles per gallon | 2 vehicles |
| 25 miles per gallon | 0 vehicles |
| 26 miles per gallon | 2 vehicles |
| 27 miles per gallon | 1 vehicles |
| 28 miles per gallon | 1 vehicles |
| 29 miles per gallon | 3 vehicles |
| Model Year | Body/Powertrain | MPG | |
| 2005 | 2005 2dr Convertible 310-hp 3.4L H6 6-sp manual RWD | 22.41 | See all data |
| With the turbocharged 350hp 2.5L H4 engine, 6-speed manual transmission, and rear-wheel drive, the 2005 Porsche Boxster has been averaging 22.41 MPG (miles per gallon). The 2005 Porsche Boxsters in this analysis were driven mostly on the highway at an average speed of 69 miles per hour (about 48.2 percent of the miles driven). The rest of the miles were in the city (11.2 percent), in heavy traffic (9 percent), and in the suburbs (0 percent). In addition, the average 2005 Porsche Boxster in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time. |
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| 2005 | 2005 2dr Convertible 315-hp 3.4L H6 7-sp automated manual RWD | 16.4 | See all data |
| 2005 | 2005 2dr Convertible 255-hp 2.9L H6 6-sp manual RWD | 25.9 | See all data |
| 2005 | 2005 2dr Convertible 245-hp 2.7L H6 5-sp manual RWD | 24.17 | See all data |
| 2005 | 2005 2dr Convertible 255-hp 2.9L H6 7-sp automated manual RWD | 25.6 | See all data |
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