| 1 | 0 | 3 | 4 | 3 | 4 |
Mercury Grand Marquis Fuel Economy (km/L)
| km/L | Number of Vehicles |
| 52 kilometers per liter | 2 vehicles |
| 53 kilometers per liter | 2 vehicles |
| 54 kilometers per liter | 3 vehicles |
| 55 kilometers per liter | 5 vehicles |
| 56 kilometers per liter | 2 vehicles |
| 57 kilometers per liter | 3 vehicles |
| 58 kilometers per liter | 4 vehicles |
| 59 kilometers per liter | 3 vehicles |
| 60 kilometers per liter | 3 vehicles |
| 61 kilometers per liter | 2 vehicles |
| 62 kilometers per liter | 4 vehicles |
| 63 kilometers per liter | 2 vehicles |
| 64 kilometers per liter | 2 vehicles |
| 65 kilometers per liter | 4 vehicles |
| 66 kilometers per liter | 2 vehicles |
| 67 kilometers per liter | 0 vehicles |
| 68 kilometers per liter | 4 vehicles |
| 69 kilometers per liter | 0 vehicles |
| 70 kilometers per liter | 2 vehicles |
| 71 kilometers per liter | 1 vehicles |
| Model Year | Body/Powertrain | km/L | |
| 2004 | 2004 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD | 60.48 | See all data |
| With the 178 kilowatts 4.6L V8 engine, 4-speed automatic transmission, and rear-wheel drive, the 2004 Mercury Grand Marquis has been averaging 60.48 L/100km (liters per 100 kilometers). The 2004 Mercury Grand Marquiss in this analysis were driven mostly on the highway at an average speed of 73 kilometers per hour (about 92.2 percent of the kilometers driven). The rest of the kilometers were in the city (3.5 percent), in heavy traffic (0.9 percent), and in the suburbs (0 percent). In addition, the average 2004 Mercury Grand Marquis in this analysis was driven on flat terrain with a medium foot and the AC not used at all. |
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| 2004 | 2004 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD | 55 | See all data |
What Our Members Are Saying about the Real Gas Mileage of the 2004 Mercury Grand Marquis
4-speed automatic RWD
2004 Mercury Grand Marquis Gas Mileage (km/L)
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 Mercury Grand Marquis's real-world km/L based on how and where you drive a car.