Mercury Grand Marquis vs. Hyundai Genesis MPG

Chart is based on 67 fuel economy reports for the Mercury Grand Marquis and 133 fuel economy reports for the Hyundai Genesis.

Mercury Grand Marquis 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
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

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
2015	4dr Sedan 420-horsepower 5.0L V8 8-speed shiftable automatic RWD	hills	med	none	3	3	0	95	73	29.7
2015	4dr Sedan 311-horsepower 3.8L V6 8-speed shiftable automatic RWD	flat	med	light	9	37	28	27	79	19.8
2015	4dr Sedan 311-horsepower 3.8L V6 8-speed shiftable automatic AWD	flat	med	light	0	12	8	80	70	31.1
2012	4dr Sedan 429-horsepower 5.0L V8 8-speed shiftable automatic RWD	flat	light	light	1	10	4	84	74	25.7
2012	4dr Sedan 333-horsepower 3.8L V6 8-speed shiftable automatic RWD	flat	light	light	2	5	33	61	73	26.4
2011	4dr Sedan 290-horsepower 3.8L V6 6-speed shiftable automatic RWD	flat	light	light	8	6	31	55	76	23.0
2010	4dr Sedan 375-horsepower 4.6L V8 6-speed shiftable automatic RWD	flat	med	hvy	5	9	22	64	70	23.1
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2010	4dr Sedan 290-horsepower 3.8L V6 6-speed shiftable automatic RWD	flat	med	hvy	4	16	39	42	77	21.3
2009	4dr Sedan 375-horsepower 4.6L V8 6-speed shiftable automatic RWD	flat	med	light	11	21	34	34	73	21.0
2009	4dr Sedan 290-horsepower 3.8L V6 6-speed shiftable automatic RWD	flat	med	light	9	19	22	51	79	23.2

This page shows only averages. See all the Hyundai Genesis fuel economy data.

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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

Hyundai Genesis Real Gas Mileage: Cons
Year	Comment
2009	While competitors have been switching to relatively small turbocharged engines, the Genesis continues to rely on larger normally aspirated ones. Even the base car's 3.8-liter V6 is nearly twice the size of the Audi's turbocharged 2.0-liter four-cylinder engine. Also, Hyundai doesn't yet offer automatic stop/start. The most significant impact: the Genesis gets much worse fuel economy. With two-wheel drive, the A6 2.0T scored 24 mpg city, 35 mpg highway in the EPA's tests, the Genesis 3.8 only 18/29. Add all-wheel drive, and the Audi's ratings fall to 22/32, the Hyundai's to 16/25, not good. Hyundai has developed a new turbocharged 3.3-liter V6 to replace the 3.8, but it isn't clear how soon this new, more efficient and more powerful engine will be available in the Genesis G80. It won't be available when the car arrives this summer, so most likely the 2018 model year. According to the trip computer, my real-world fuel economy was well above the EPA figures. Only when I drove the Genesis fairly aggressively did the trip computer average fall below 20 mpg. On my usual suburban route it averaged around 23 mpg, and on a 70-mph highway it averaged about 30 mpg. The former was still a few mpg short of the Audi, but the latter was at least as good. If the trip computer is accurate, the fuel economy of the Genesis isn't nearly as dismal as the EPA ratings indicate. see full Hyundai Genesis review

Hyundai Genesis Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2012	4dr Sedan 333-horsepower 3.8L V6 8-speed shiftable automatic RWD	This is my second Genesis. First one was a 2010 4.6L and this has the 6 cyl and it is nearly as quick but gets better fuel mileage. I get in the high 20's on the highway. Used to get 25 to 27 in the 8cyl. This 2012 has an 8 speed transmission compared to the 2010's 7 speed. see full Hyundai Genesis review
2010	4dr Sedan 375-horsepower 4.6L V8 6-speed shiftable automatic RWD	about average for a V8, nothing special see full Hyundai Genesis review

Hyundai Genesis Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2010	4dr Sedan 375-horsepower 4.6L V8 6-speed shiftable automatic RWD	I would like the economy to be higher... 20-28 range see full Hyundai Genesis review
2009	4dr Sedan 290-horsepower 3.8L V6 6-speed shiftable automatic RWD	With all the added technology, I would have expected better mileage. I average slightly less than 20 MPH and that is the same as an older heavier STS without the latest and greatest engine management features. see full Hyundai Genesis review
2009	4dr Sedan 375-horsepower 4.6L V8 6-speed shiftable automatic RWD	Others say they are getting the 18 to 24 MPG claimed. I find that when I do 80% "suburban driving" (strip malls, lights, in/out of car, etc), I get 16 at best. When I am doing 80 on the highway w/ cruise control, I get 23-26. see full Hyundai Genesis review