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Porsche 911 Fuel Economy (L/100km)
| L/100km | Number of Vehicles |
| 9 liters per 100 kilometers | 2 vehicles |
| 10 liters per 100 kilometers | 6 vehicles |
| 11 liters per 100 kilometers | 14 vehicles |
| 12 liters per 100 kilometers | 6 vehicles |
| 13 liters per 100 kilometers | 0 vehicles |
| 14 liters per 100 kilometers | 1 vehicles |
| Model Year | Body/Powertrain | L/100km | |
| 2009 | 2009 2dr Convertible 385-hp 3.8L H6 6-sp manual RWD | 11.9 | See all data |
| With the turbocharged 326kW 3.0L H6 engine, 7-speed manual transmission, and rear-wheel drive, the 2009 Porsche 911 has been averaging 11.9 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. |
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| 2009 | 2009 2dr Coupe 385-hp 3.8L H6 6-sp manual RWD | 11.08 | See all data |
| 2009 | 2009 2dr Coupe 385-hp 3.8L H6 7-sp automated manual RWD | 12.4 | See all data |
| 2009 | 2009 2dr Coupe 345-hp 3.6L H6 6-sp manual RWD | 10.1 | See all data |
| 2009 | 2009 2dr Coupe 345-hp 3.6L H6 7-sp automated manual RWD | 8.7 | See all data |
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