Mercury Grand Marquis Wagon Fuel Economy History

MPG by year — EPA official data.

Best MPG Year

1987

19 MPG combined

Latest Model

1991

18 MPG combined

Year	Engine	City	Hwy	Combined	Fuel Cost/yr
1991	Regular	15	22	18	$3,750	Details →
1990	Regular	15	22	18	$3,750	Details →
1989	Regular	15	22	18	$3,750	Details →
1988	Regular	15	22	18	$3,750	Details →
1987	Regular	16	24	19	$3,550	Details →
1986	Regular	16	24	19	$3,550	Details →
1985	Regular	14	22	17	$3,950	Details →
1984	Regular	14	20	16	$4,200	Details →