Mercedes-Benz GL vs. Nissan Quest Fuel Economy (L/100km)

Chart is based on 48 fuel economy reports for the Mercedes-Benz GL and 32 fuel economy reports for the Nissan Quest.

Mercedes-Benz GL L/100km

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	L/100km
2014	4dr SUV turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	1	4	15	80	65	8.6
2011	4dr SUV 382-horsepower 5.5L V8 7-speed shiftable automatic AWD	flat	light	hvy	1	49	20	30	70	15.7
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	7	13	34	46	64	9.9
2009	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	med	hvy	0	13	60	27	72	10.7
2009	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	21	22	27	30	60	13.1
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	flat	light	light	6	23	31	41	71	10.7
2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	flat	med	hvy	13	30	28	30	83	13.9
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2008	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	none	21	21	23	35	85	14.0
2007	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	hills	light	light	3	12	22	64	67	9.4
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD w/low range	hills	med	light	15	21	22	42	60	14.8
2007	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	flat	med	light	9	16	38	38	65	13.7

This page shows only averages. See all the Mercedes-Benz GL 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	L/100km
2011	4dr Minivan, ext. 260-horsepower 3.5L V6 CVT FWD	flat	med	none	0	0	5	95	70	9.6
2009	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	flat	light	none	5	5	30	60	70	10.9
2008	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	flat	light	light	13	16	53	19	67	11.7
2007	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	flat	lead	hvy	0	10	80	10	70	15.6
2006	4dr Minivan, ext. 240-horsepower 3.5L V6 4-speed automatic FWD	flat	light	light	7	39	15	39	70	11.9
2004	4dr Minivan, ext. 240-horsepower 3.5L V6 5-speed automatic FWD	flat	light	light	2	19	28	50	87	11.2
2004	4dr Minivan, ext. 240-horsepower 3.5L V6 4-speed automatic FWD	flat	light	light	17	25	22	37	71	14.2
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2001	4dr Minivan 170-horsepower 3.3L V6 4-speed automatic FWD	flat	med	none	0	65	10	25	60	20.9

This page shows only averages. See all the Nissan Quest fuel economy data.

See TrueDelta's information for all Mercedes-Benz models and Nissan models.

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Comment
2013	In the EPA's fuel economy tests the Mercedes-Benz GL350 BlueTEC rates 19 mpg city and 26 mpg highway. We observed low 20s in casual suburban driving (a few mpg lower with a heavy foot, a few mpg higher with a very light one) and 25.5 on our trip to Chicago and back (which included some heavy urban driving and 70-mph highways). These numbers don't seem so great, given that the GL350 burns diesel? Consider that the GL-Class is not only wide and tall but also very heavy, at nearly 5,500 pounds unloaded. The gas-powered GL450 is rated 14/19. Our family vehicle, a Ford Taurus X that weighs over 1,000 pounds less than the Mercedes, struggles to crack 22 on the highway. The Audi Q7 rates the same in city driving, and a couple mpg better on the highway. Since the GL350 is almost in another class size-wise, I'm calling this one a draw. Multiply this fuel economy by a 26.4-gallon tank, and the GL350 can go quite far between $100+ fill-ups. Is it really possible to drive the nearly 300 miles to Chicago--and then back--on one tank? Yes it is, with nearly a quarter-tank to spare. (Is it possible to do this without any of three kids needing to stop for a bathroom break? To our even greater surprise, yes to this as well. They were busy watching the $1,950 dual-screen entertainment system.) see full Mercedes-Benz GL review

Mercedes-Benz GL Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2010	4dr SUV turbocharged 210hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	For a large, seven passenger SUV it can deliver upwards of 28 mpg on the highway. see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	25 mpg highway fuel efficiency for a large 7 passenger SUV is fantastic see full Mercedes-Benz GL review
2008	4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD	Diesel provides 25 MPG on the highway see full Mercedes-Benz GL review

Mercedes-Benz GL Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2010	4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD	15 mpg average. premium fuel. see full Mercedes-Benz GL review

Nissan Quest Real Gas Mileage: Pros
Year	Body/Powertrain	Comment
2014	4dr Minivan, ext. 260-horsepower 3.5L V6 CVT FWD	I was hoping for slightly better fuel economy, but for a 4500 lbs vehicle, I really shouldn't be complaining. In predominantly hilly suburban driving, I'm averaging a couple miles below the estimated city fuel economy number. On 100% hilly highway miles, I'm right about at or maybe 1 mpg above the estimated fuel economy. It would be nice to acheive better highway mpg, but I suppose that's the trade-off for having a torquey engine. You would think the CVT would improve things, and maybe in fact it is helping the poor fuel economy of the aging VQ engine design, but I also think the CVT transmission is a cost-cutting measure by Nissan. It would be nicer to have one of the 7 speed transmissions found in the Infiniti lineup. see full Nissan Quest review
2007	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	It is great for going on long trips see full Nissan Quest review
2006	4dr Minivan, ext. 240-horsepower 3.5L V6 5-speed automatic FWD	Rated best in class 3.5L Engine see full Nissan Quest review

Nissan Quest Real Gas Mileage: Cons
Year	Body/Powertrain	Comment
2014	4dr Minivan, ext. 260-horsepower 3.5L V6 CVT FWD	Could be better, but then the van would have less power. Pick your poison. see full Nissan Quest review
2012	4dr Minivan, ext. 260-horsepower 3.5L V6 CVT FWD	. see full Nissan Quest review
2008	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	All vans have pitiful fuel economy. The Quest is about average for the class. see full Nissan Quest review
2008	4dr Minivan, ext. 235-horsepower 3.5L V6 5-speed automatic FWD	Averaging ~20mpg. I wish any minivan could get 25+mpg fuel economy. see full Nissan Quest review
2004	4dr Minivan, ext. 240-horsepower 3.5L V6 5-speed automatic FWD	Averages 17 mpg, never more than 23 Hwy. see full Nissan Quest review