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Mercury Grand Marquis Fuel Economy (g/100m)
| g/100m | Number of Vehicles |
| 3 gallons per 100 meters | 7 vehicles |
| 4 gallons per 100 meters | 47 vehicles |
| 5 gallons per 100 meters | 10 vehicles |
| 6 gallons per 100 meters | 3 vehicles |
| Model Year | Body/Powertrain | g/100m | |
| 2010 | 2010 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 3.95 | See all data |
| With the 167 kilowatts 4.6L V8 engine, 4-speed automatic transmission, and rear-wheel drive, the 2010 Mercury Grand Marquis has been averaging 3.95 L/100km (liters per 100 kilometers). The 2010 Mercury Grand Marquiss in this analysis were driven mostly on the highway at an average speed of 70 kilometers per hour (about 90 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 2010 Mercury Grand Marquis 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 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 5.26 | See all data |
| 2005 | 2005 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 4.2 | See all data |
| 2004 | 2004 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 3.92 | See all data |
| 2004 | 2004 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 4.27 | See all data |
| 2003 | 2003 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 4.59 | See all data |
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| 2003 | 2003 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 5.45 | See all data |
| 2002 | 2002 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 4.55 | See all data |
| 2002 | 2002 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 4.93 | See all data |
| 2000 | 2000 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 4.6 | See all data |
| 2000 | 2000 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 4.64 | See all data |
What Our Members Are Saying about the Real Gas Mileage of the Mercury Grand Marquis
4-speed automatic RWD
4-speed automatic RWD