Infiniti Q50 vs. Mercury Mariner MPG

Chart is based on 3 fuel economy reports for the Infiniti Q50 and 35 fuel economy reports for the Mercury Mariner.

Infiniti Q50 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
2014	4dr Sedan 328-horsepower 3.7L V6 7-speed shiftable automatic AWD	flat	med	light	0	20	10	70	70	24.4
2014	4dr Sedan 302-horsepower 3.5L V6 Hybrid 7-speed shiftable automatic RWD	flat	med	light	5	5	5	86	75	29.3
2014	4dr Sedan 302-horsepower 3.5L V6 Hybrid 7-speed shiftable automatic AWD	flat	med	light	5	15	40	40	80	25.0

This page shows only averages. See all the Infiniti Q50 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
2011	4dr SUV 240-horsepower 3.0L V6 6-speed automatic FWD	flat	v.lt	none	30	30	30	10	60	18.9
2009	4dr SUV 240-horsepower 3.0L V6 6-speed automatic FWD	flat	light	light	20	20	30	30	70	20.6
2009	4dr SUV 153-horsepower 2.5L I4 Hybrid CVT FWD	flat	light	light	11	13	31	44	60	35.5
2009	4dr SUV 153-horsepower 2.5L I4 Hybrid CVT AWD	flat	med	light	30	0	10	60	80	32.3
2008	4dr SUV 200-horsepower 3.0L V6 4-speed automatic FWD	flat	light	light	0	45	30	25	70	22.0
2008	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	none	0	8	60	33	60	21.4
2008	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	flat	light	hvy	5	18	55	23	65	30.8
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2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	light	0	3	37	61	63	23.4
2007	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	flat	light	light	11	16	56	18	70	29.8
2006	4dr SUV 200-horsepower 3.0L V6 4-speed automatic FWD	flat	light	light	8	13	35	45	62	23.1
2006	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	med	light	0	0	25	75	75	21.5
2006	4dr SUV 133-horsepower 2.3L I4 Hybrid CVT AWD	hills	light	light	16	18	35	31	70	30.6
2005	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	flat	light	light	0	0	85	15	60	21.0
2005	4dr SUV 153-horsepower 2.3L I4 4-speed automatic AWD	flat	v.lt	light	3	13	8	75	67	22.3

This page shows only averages. See all the Mercury Mariner fuel economy data.

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Infiniti Q50 Real Gas Mileage: Cons
Year	Comment
	With EPA ratings of 19 mpg city and 27 mpg highway, the Q50 AWD falls short of the BMW's scores (21/31). But it's on par (or better) compared to the others. If fuel economy is a priority then the Q50 Hybrid is the way to go, with EPA ratings of 29/36 with rear-wheel-drive and 28/34 with all-wheel-drive. Opt for the S variant and these numbers take a bit of a hit, to 28/34 with RWD and 27/31 with AWD. BMW also offers a hybrid, but not with AWD, and it's not as fuel efficient (25/33). The Q50S Hybrid costs another $1,850. Quite reasonable, as it's not only more efficient, but also torquier and quicker. More of an issue: it weighs more, which likely impacts handling, and the battery pack reduces trunk volume to a class-trailing 9.4 cubic feet. see full Infiniti Q50 review

None of our members have yet commented on the real gas mileage of the Infiniti Q50.

Mercury Mariner Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	0 171-horsepower 2.5L I4 6-speed automatic FWD	getting 31 mpg highway see full Mercury Mariner review
2009	4dr SUV 171-horsepower 2.5L I4 6-speed automatic FWD	Has been very good and getting better see full Mercury Mariner review
2009	4dr SUV 240-horsepower 3.0L V6 6-speed automatic FWD	Coming from a Trailblazer, we like the average of 21-22 MPG in mixed driving, as were used to about 17 MPG. Fuel economy climbs toward the rated 26 MPG the more highway driving we do. see full Mercury Mariner review
2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	For the first almost three years after we got the car, it gave 21+ mpg in town & 24+ mpg on the road. see full Mercury Mariner review
2005	4dr SUV 153-horsepower 2.3L I4 4-speed automatic AWD	For an SUV with a 4cyl and 4wd I get avg of 22 MPG mixed city and highway. I usually get 23-26 on freeway only. This is good. see full Mercury Mariner review

Mercury Mariner Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2007	4dr SUV 200-horsepower 3.0L V6 4-speed automatic AWD	For some reason when new Michelin All Terrain tires with Nitrogen air replaced the Champions from the factory, it plummeted to 17 & 20 mpg. No explanation from Michelin, Costco or Ford/Mercury - they have no idea why. see full Mercury Mariner review