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Mercury Grand Marquis Fuel Economy (L/100km)

L/100km Number of Vehicles
11 liters per 100 kilometers 2 vehicles
12 liters per 100 kilometers 0 vehicles
13 liters per 100 kilometers 3 vehicles
14 liters per 100 kilometers 1 vehicles
Model Year Body/Powertrain L/100km  
2003 2003 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD 10.8
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With the 178 kilowatts 4.6L V8 engine, 4-speed automatic transmission, and rear-wheel drive, the 2003 Mercury Grand Marquis has been averaging 10.8 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.
2003 2003 4dr Sedan 224-hp 4.6L V8 4-sp automatic RWD 12.82
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2003 Mercury Grand Marquis Gas Mileage (L/100km)

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 L/100km based on how and where you drive a car.