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Mercury Grand Marquis Fuel Economy Data

4dr Sedan 239-hp 4.6L V8 4-sp automatic RWD

flat, hilly, or mountainousLand driving style: very light to "lead foot"Foot A/C use: none to heavyA/C constant stop and goTraf % many stops per mileCity % stop every mile or twoSub % fairly steady speedHwy % Hwy Spd MPG
flat med none 0 1 0 99 75 25.036
flat med none 1 10 22 67 70 22.270
flat med none 0 0 1 99 80 25.473
flat med none 0 5 0 95 75 23.140
flat light none 0 0 0 100 70 26.000
flat med none 0 2 3 95 75 25.294
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flat med none 0 1 0 99 75 27.742
flat med none 10 5 0 85 75 23.816
flat med light 0 5 0 95 65 29.100
flat med none 0 5 0 95 75 25.308
flat med light 5 5 0 90 75 23.500
flat light light 0 0 2 98 65 28.931
flat med light 0 5 5 90 75 22.700
flat med none 0 5 0 95 75 27.786
flat med none 0 5 5 90 75 24.180
flat med none 0 2 0 98 75 26.331
mtns light none 19 22 24 35 60 23.000
flat med light 0 5 0 95 75 26.400
flat med none 0 5 0 95 70 27.516
flat light light 0 0 2 98 65 29.756
flat med none 0 0 5 95 75 27.300
flat med none 0 0 5 95 75 28.043
flat med light 0 10 10 80 70 22.100
flat med light 0 0 5 95 75 26.400
flat med none 0 0 5 95 75 24.593
flat med light 0 0 5 95 75 25.000
flat light light 0 0 2 98 65 30.087
flat med none 0 5 10 85 75 22.566
flat med light 0 5 0 95 70 26.700
flat med none 0 5 0 95 80 23.046
flat light none 0 0 1 99 70 27.500
flat light light 0 0 2 98 65 28.175
flat med none 0 5 15 80 75 23.427
flat med none 0 5 15 80 75 23.517
flat med none 0 5 0 95 70 26.232
flat light none 0 0 0 100 70 29.100
flat med light 5 5 0 90 75 24.700
flat med none 0 5 0 95 75 26.774
flat light light 0 0 2 98 65 29.633
flat med light 0 0 0 100 75 25.800
flat light light 0 0 2 98 65 29.024
flat med none 0 0 5 95 75 24.600
flat med none 5 10 0 85 70 23.151
flat med none 0 5 0 95 75 27.361
flat med none 0 2 3 95 80 24.931
flat med none 0 5 5 90 70 23.795
flat med none 0 5 5 90 75 24.315
flat med none 0 4 1 95 80 24.512
flat med none 0 1 0 99 75 24.191

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What Our Members Are Saying about the Real Gas Mileage of the 2004 Mercury Grand Marquis

2004 Mercury Grand Marquis Real Gas Mileage: Cons
YearBody/PowertrainComment
2005 4dr Sedan 239-horsepower 4.6L V8
4-speed automatic RWD
The V-8 is thirsty for city driving. The extra power would be nice for highway & mountain driving, though. see full Mercury Grand Marquis review
 

2004 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.