Buick Rainier vs. Mercury Grand Marquis MPG

Chart is based on 12 fuel economy reports for the Buick Rainier and 67 fuel economy reports for the Mercury Grand Marquis.

Buick Rainier MPG

Year	Body/Powertrain	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
2006	4dr SUV 291-horsepower 4.2L I6 4-speed automatic RWD	flat	med	hvy	0	0	0	100	80	21.6
2005	4dr SUV 300-horsepower 5.3L V8 4-speed automatic AWD	flat	light	light	0	0	0	100	60	22.0
2005	4dr SUV 275-horsepower 4.2L I6 4-speed automatic RWD	hills	v.lt	hvy	2	73	15	10	75	16.6
2004	4dr SUV 290-horsepower 5.3L V8 4-speed automatic AWD	flat	med	none	13	23	33	31	63	16.6
2004	4dr SUV 275-horsepower 4.2L I6 4-speed automatic RWD	flat	light	light	11	3	43	43	63	16.1
2004	4dr SUV 275-horsepower 4.2L I6 4-speed automatic AWD	flat	light	none	1	10	39	50	60	18.1

This page shows only averages. See all the Buick Rainier fuel economy data.

Year	Body/Powertrain	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
2010	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	light	0	0	10	90	70	25.3
2009	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	5	5	15	75	70	19.0
2005	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	none	5	5	15	75	60	23.8
2004	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	none	1	3	3	92	73	25.7
2004	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	med	light	5	5	60	30	70	23.4
2003	4dr Sedan 239-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	0	1	12	87	75	21.8
2003	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	flat	light	light	15	26	19	40	68	18.5
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2002	4dr Sedan 235-horsepower 4.6L V8 4-speed automatic RWD	flat	light	light	22	23	23	31	60	22.0
2002	4dr Sedan 220-horsepower 4.6L V8 4-speed automatic RWD	flat	light	hvy	5	25	60	10	60	20.3
2000	4dr Sedan 215-horsepower 4.6L V8 4-speed automatic RWD	flat	med	hvy	0	0	50	50	70	21.8
2000	4dr Sedan 200-horsepower 4.6L V8 4-speed automatic RWD	flat	light	none	1	4	40	55	61	21.9

See TrueDelta's information for all SUVs

See TrueDelta's information for all Buick models and Mercury models.

Buick Rainier Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2005	4dr SUV 300-horsepower 5.3L V8 4-speed automatic AWD	12 mpg see full Buick Rainier review
2004	4dr SUV 290-horsepower 5.3L V8 4-speed automatic AWD	An AWD V8 body on frame SUV/truck like the Rainier will be a gas pig. Mid to high teens are all you should expect. The benefit of poor gas mileage is strong towing performance. see full Buick Rainier review

Mercury Grand Marquis Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2008	4dr Sedan 224-horsepower 4.6L V8 4-speed automatic RWD	Incredible- 21mpg city, 27mpg HWY see full Mercury Grand Marquis review

Mercury Grand Marquis Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
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