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Mercury Grand Marquis MPG

MPG Number of Vehicles
16 miles per gallon 1 vehicles
17 miles per gallon 0 vehicles
18 miles per gallon 3 vehicles
19 miles per gallon 0 vehicles
20 miles per gallon 0 vehicles
21 miles per gallon 0 vehicles
22 miles per gallon 2 vehicles
Model Year Body/Powertrain MPG  
2003 2003 4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD 21.8
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With the 239-horsepower 4.6L V8 engine, 4-speed automatic transmission, and rear-wheel drive, the 2003 Mercury Grand Marquis has been averaging 21.8 MPG (miles per gallon).

The 2003 Mercury Grand Marquiss in this analysis were driven mostly on the highway at an average speed of 75 miles per hour (about 87 percent of the miles driven). The rest of the miles 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 18.52
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2003 Mercury Grand Marquis Gas Mileage (MPG)

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 MPG based on how and where you drive a car.