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Porsche 911 Fuel Economy (g/100m)

g/100m Number of Vehicles
4 gallons per 100 meters 8 vehicles
5 gallons per 100 meters 20 vehicles
6 gallons per 100 meters 1 vehicles
Model Year Body/Powertrain g/100m  
2009 2009 2dr Convertible 385-hp 3.8L H6 6-sp manual RWD 5.05
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With the turbocharged 326kW 3.0L H6 engine, 7-speed manual transmission, and rear-wheel drive, the 2009 Porsche 911 has been averaging 5.05 L/100km (liters per 100 kilometers).

The 2009 Porsche 911s in this analysis were driven mostly on the highway at an average speed of 75 kilometers per hour (about 50 percent of the kilometers driven). The rest of the kilometers were in the suburbs (0 percent), in the city (0 percent), and in heavy traffic (0 percent).

In addition, the average 2009 Porsche 911 in this analysis was driven on flat terrain with a medium foot and the AC on only some of the time.
2009 2009 2dr Coupe 385-hp 3.8L H6 6-sp manual RWD 4.71
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2009 2009 2dr Coupe 385-hp 3.8L H6 7-sp automated manual RWD 5.26
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2009 2009 2dr Coupe 345-hp 3.6L H6 6-sp manual RWD 4.29
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2009 2009 2dr Coupe 345-hp 3.6L H6 7-sp automated manual RWD 3.71
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2009 Porsche 911 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 911's real-world g/100m based on how and where you drive a car.