| 1 | 0 | 3 | 4 | 3 | 4 |
Mercury Grand Marquis Fuel Economy (g/100m)
| g/100m | Number of Vehicles |
| 5 gallons per 100 meters | 3 vehicles |
| 6 gallons per 100 meters | 3 vehicles |
| Model Year | Body/Powertrain | g/100m | |
| 2003 | 2003 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 4.59 | See all data |
| With the 178 kilowatts 4.6L V8 engine, 4-speed automatic transmission, and rear-wheel drive, the 2003 Mercury Grand Marquis has been averaging 4.59 L/100km (liters per 100 kilometers). The 2003 Mercury Grand Marquiss in this analysis were driven mostly on the highway at an average speed of 75 kilometers per hour (about 87 percent of the kilometers driven). The rest of the kilometers were in the city (1 percent), in the suburbs (0 percent), and in heavy traffic (0 percent). In addition, the average 2003 Mercury Grand Marquis in this analysis was driven on flat terrain with a medium foot and the AC on most or all of the time. |
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| 2003 | 2003 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 5.45 | See all data |
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