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Porsche Boxster Fuel Economy (g/100m)

g/100m Number of Vehicles
3 gallons per 100 meters 2 vehicles
4 gallons per 100 meters 10 vehicles
5 gallons per 100 meters 6 vehicles
6 gallons per 100 meters 4 vehicles
Model Year Body/Powertrain g/100m  
2005 2005 2dr Convertible 310-hp 3.4L H6 6-sp manual RWD 4.6
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With the turbocharged 257kW 2.5L H4 engine, 6-speed manual transmission, and rear-wheel drive, the 2005 Porsche Boxster has been averaging 4.6 L/100km (liters per 100 kilometers).

The 2005 Porsche Boxsters in this analysis were driven mostly on the highway at an average speed of 69 kilometers per hour (about 48.2 percent of the kilometers driven). The rest of the kilometers 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.
2005 2005 2dr Convertible 315-hp 3.4L H6 7-sp automated manual RWD 6.1
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2005 2005 2dr Convertible 255-hp 2.9L H6 6-sp manual RWD 3.86
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2005 2005 2dr Convertible 245-hp 2.7L H6 5-sp manual RWD 4.21
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2005 2005 2dr Convertible 255-hp 2.9L H6 7-sp automated manual RWD 3.91
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2005 Porsche Boxster Gas Mileage (g/100m)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the Porsche Boxster's real-world g/100m based on how and where you drive a car.